Azure99/stackoverflow-qa-top-300k · Datasets at Hugging Face

50,430

CSS - Placement of a div in the lower left-hand corner

I wish I were a CSS smarty .... How can you place a div container in the lower left-hand corner of the web page; taking into account the users scroll-position?

50,442

1

0

null

2008-09-08 19:03:27.093 UTC

1

2017-02-20 17:19:24.917 UTC

2016-03-04 15:56:13.58 UTC

Brian Warshaw

996,815

deadbug

4,646

null

1

28

css|html|positioning

39,863

To position an element relative to the "viewport" (the window or frame it's in), and have it ignore how that viewport is scrolled, you can use the <code>position: fixed;</code> property value (<a href="https://developer.mozilla.org/en/docs/Web/CSS/position#Fixed_positioning" rel="noreferrer">MDN documentation</a>). This has been supported by every browser since Internet Explorer 7. To position the element at the bottom-left of the window, we need to also specify that it should be positioned at <code>0</code> distance from the <code>bottom</code> and <code>left</code>: <pre><code>position: fixed; bottom: 0; left: 0; </code></pre> <h3>Full Example</h3> <div class="snippet" data-lang="js" data-hide="true" data-console="false" data-babel="false"> <div class="snippet-code snippet-currently-hidden"> <pre class="snippet-code-css lang-css prettyprint-override"><code>.bottom-left { position: fixed; bottom: 0; left: 0; } .alert { border: 2px solid red; background: white; font-weight: bold; padding: 1em; }</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code><div class="bottom-left alert"> Look at me! </div> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam dignissim diam arcu, a gravida justo malesuada et. Fusce iaculis, dui laoreet ultricies congue, arcu lectus rhoncus neque, ut molestie magna augue ut neque. Duis in feugiat ipsum, et imperdiet nunc. Cras convallis lorem eu diam malesuada malesuada. Nunc dapibus suscipit ligula, vel mattis eros blandit id. In placerat justo vitae pretium fermentum. Proin ac erat commodo nibh ullamcorper feugiat. Nulla ultricies maximus massa, non semper dolor malesuada vel. Nullam sem justo, bibendum vel tempus pharetra, gravida vel sapien. Morbi facilisis tristique mauris vel elementum. Ut porttitor egestas metus eget auctor. Phasellus efficitur rutrum massa nec fringilla. Aliquam et imperdiet leo. Sed tincidunt hendrerit tortor eget tempor. Sed vel dolor lectus. Nulla sed blandit lacus. Mauris ac magna nec libero vehicula aliquet id a libero. Vivamus sed lobortis velit. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Sed at feugiat sapien, ut commodo mi. Quisque scelerisque maximus efficitur. In ultrices, magna eu semper pellentesque, tellus odio hendrerit augue, ut porta sapien lacus quis odio. Duis sodales, dui a condimentum imperdiet, tellus est laoreet velit, a viverra risus libero sed urna. Phasellus sollicitudin tincidunt viverra. Proin vulputate leo at justo auctor feugiat. Nam auctor, mauris at commodo tempus, eros diam varius ligula, vitae efficitur massa lectus et enim. Integer tristique nibh in lacus condimentum, et interdum urna mollis. Aenean id risus tristique, volutpat dolor sed, fermentum ex. Interdum et malesuada fames ac ante ipsum primis in faucibus. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Nullam velit nibh, elementum at orci quis, tempor fermentum tellus. Nunc facilisis nisi at leo auctor aliquet. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Aliquam tempor ipsum vel scelerisque tincidunt. Etiam vulputate auctor ante, in tristique est congue ut. Vestibulum maximus nibh vestibulum tristique ullamcorper. Phasellus eu eleifend ante, nec efficitur nulla. Nunc pulvinar purus id arcu egestas, sed iaculis nisl finibus. Sed cursus bibendum tortor, id cursus lacus euismod in. Nam lacinia, sapien faucibus dapibus varius, neque velit fringilla est, in porta quam sem sit amet ligula. Aliquam ornare est ac pellentesque suscipit. Curabitur eleifend convallis sem, volutpat efficitur erat laoreet id. Maecenas interdum ante in lectus varius, lobortis auctor quam rutrum. Nullam tristique felis quis lectus luctus gravida. Cras porttitor pellentesque nibh. Fusce placerat vehicula commodo. Mauris vel lectus viverra sem consectetur sagittis quis vel lectus. Quisque vel dapibus augue. Sed lacinia massa quis dui sodales faucibus. Donec sagittis, dolor sed fermentum dapibus, justo ipsum porttitor purus, sed fermentum mi nulla non lorem. Praesent aliquet iaculis molestie. Phasellus enim nunc, vestibulum non odio vel, porta imperdiet lorem. Morbi laoreet felis a ipsum elementum sollicitudin. Morbi varius mollis ex, a posuere lorem fringilla ac. Curabitur metus ligula, mollis quis diam eu, pulvinar placerat libero. Aenean vestibulum lacinia diam in facilisis. Praesent egestas sapien a est consequat facilisis. Nulla id mauris a metus venenatis pellentesque. Praesent justo augue, efficitur ac vulputate et, luctus at elit. Proin quis urna quam. Pellentesque iaculis, felis sed hendrerit venenatis, purus augue venenatis tellus, a posuere justo tellus at ex. Donec et arcu non arcu scelerisque efficitur nec sed dolor. Sed eget lacus enim. Donec sodales mollis condimentum.</code></pre> </div> </div>

44,447,232

Error while executing test, if using CreateResponse extention method to return Azure Function HttpResonseMessage

My Azure Function code is like below <pre><code>public static class MyHttpTriggerFunction { public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]HttpRequestMessage req, TraceWriter log) { // some business logic if (valid) { return req.CreateResponse(HttpStatusCode.OK, true); } else { return req.CreateResponse(HttpStatusCode.BadRequest, "some error message"); } } } </code></pre> In my test project I am reading the result like below: <pre><code>var result = await MyHttpTriggerFunction.Run(req, log).ConfigureAwait(false); </code></pre> After executing the function, when it try to return the response in result variable, the test method fails with exception. ** <blockquote> System.InvalidOperationException: The request does not have an associated configuration object or the provided configuration was null. </blockquote> ** I have made sure that test project has the same <code>System.Net.Http.HttpRequestMessageExtension</code> dll. If I change the function code not to use <code>CreateResponse</code> extension method (this extension method is from the VS 2017 template's code ) and return the response like below, I get the response in test method and the test case runs fine. <pre><code>var res = new HttpResponseMessage(); if (valid) { res.StatusCode = HttpStatusCode.OK; res.Content = new ObjectContent<bool>(true, new JsonMediaTypeFormatter()); return res; } else { res.StatusCode = HttpStatusCode.BadRequest; res.Content = new ObjectContent<string>("some error message", new JsonMediaTypeFormatter()); return res; } </code></pre> Below is the stacktrace of error <blockquote> Result StackTrace: at System.Net.Http.HttpRequestMessageExtensions.CreateResponse[T](HttpRequestMessage request, HttpStatusCode statusCode, T value, HttpConfiguration configuration) at System.Net.Http.HttpRequestMessageExtensions.CreateResponse[T](HttpRequestMessage request, HttpStatusCode statusCode, T value) at MyFunctionApp.MyHttpTriggerFunction.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() at MyFunctionAppUnitTest.MyHttpTriggerFunctionTest.d__2.MoveNext() in C:\Users\rsingh\Desktop\Git_Workspace\ActivationAPI\MyFunctionAppUnitTest\MyHttpTriggerFunctionTest.cs:line 53 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.TestPlatform.MSTestAdapter.PlatformServices.ThreadOperations.ExecuteWithAbortSafety(Action action) Result Message: Test method MyFunctionAppUnitTest.MyHttpTriggerFunctionTest.MyHttpTriggerFunction_SuccessResult threw exception: System.InvalidOperationException: The request does not have an associated configuration object or the provided configuration was null. </blockquote> Am I missing something trivial

44,447,349

2

0

null

2017-06-08 23:51:30.243 UTC

3

2017-09-18 09:48:28.977 UTC

null

1,878,728

null

4,372,824

null

1

30

c#|unit-testing|azure|visual-studio-2017|azure-functions

13,984

The Error message is telling you the problem. <blockquote> The request does not have an associated configuration object or the provided configuration was null. </blockquote> When testing the request out side of a httpserver you need to give the request a <code>HttpConfiguration.</code> <pre><code>// Arrange. var configuration = new HttpConfiguration(); var request = new System.Net.Http.HttpRequestMessage(); request.Properties[System.Web.Http.Hosting.HttpPropertyKeys.HttpConfigurationKey] = configuration; //...other code </code></pre>

38,855,891

Angular Cli Webpack, How to add or bundle external js files?

I am not sure how to include JS files (vendors) after switching Angular Cli from SystemJs to Webpack. For example Option A I have some js files that were installed via npm. Adding script tags to the head tag like this does not work. Nor does it seem like the best way. <pre><code><head> <script src="node_modules/some_package/somejs.js"> </head> //With systemJs I could do this <head> <script src="vendor/some_package/somejs.js"> </head> </code></pre> Option B Include these js files as part of the webpack bundle. This seems like the way it probably should be done. However I am not sure how to do this as all of the webpack code seems to be hidden behind the angular-cli-webpack node package. I was thinking maybe there is another webpack config that we might have access to. But I am not sure as I didn't see one when creating a new angular-cli-webpack project. More Info: The js files I am trying to include need to be included before the Angular project. For example jQuery and a third party js lib that isn't really setup for module loading or typescript. References <a href="https://github.com/angular/angular-cli/blob/master/WEBPACK_UPDATE.md" rel="noreferrer">https://github.com/angular/angular-cli/blob/master/WEBPACK_UPDATE.md</a> <a href="https://github.com/angular/angular-cli/tree/webpack" rel="noreferrer">https://github.com/angular/angular-cli/tree/webpack</a>

39,661,714

5

4

null

2016-08-09 16:20:01.047 UTC

22

2021-03-31 13:58:01.63 UTC

2017-11-29 14:53:57.95 UTC

null

1,949,099

null

1,949,099

null

1

87

javascript|angular|angular-cli

103,402

Last tested using angular-cli 11.x.x with Angular 11.x.x This can be accomplished using <code>scripts:[]</code> in <code>angular.json</code>. <pre><code>{ "project": { "version": "1.0.0", "name": "my-project" }, "apps": [ { "root": "src", "outDir": "dist", "assets": ["assets"], "index": "index.html", "main": "main.ts", "polyfills": "polyfills.ts", "test": "test.ts", "tsconfig": "tsconfig.json", "prefix": "app", "mobile": false, "styles": [ "styles.css" ], "scripts": [ "../node_modules/jquery/dist/jquery.js" ], "environments": { "source": "environments/environment.ts", "dev": "environments/environment.ts", "prod": "environments/environment.prod.ts" } } ], "addons": [], "packages": [], "e2e": { "protractor": { "config": "./protractor.conf.js" } }, "test": { "karma": { "config": "./karma.conf.js" } }, "defaults": { "styleExt": "css", "prefixInterfaces": false } } </code></pre> Note: As <a href="https://github.com/angular/angular-cli/wiki/angular-cli" rel="noreferrer">the documentation suggests</a> in the global library installation: if you change the value of your <code>styles</code> (or <code>scripts</code>!) property, then: <blockquote> Restart ng serve if you're running it, </blockquote> ..to see the scripts executed in a **globalcontext via the <code>scripts.bundle.js</code> file. Note: As discussed in the comments below. JS libs that support UMD modules via <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import" rel="noreferrer">es6 imports</a> such as jQuery can also be imported into your typescript files using the es6 import syntax. For example: <code>import $ from 'jquery';</code>.

38,757,538

Android Design Layout ListItem RecyclerView Horizontal

I am using the tools:listitem attribute to show my views in the design layout with a recyclerview. Problem is, they always show up in a vertical list. Is there a way to have the Design Layout Editor display them horizontally? <pre><code><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.v7.widget.RecyclerView android:layout_width="match_parent" android:layout_height="match_parent" tools:listitem="@android:layout/simple_list_item_checked"/> </code></pre> <a href="https://i.stack.imgur.com/qvKh6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/qvKh6.png" alt="enter image description here"></a> I want the above image, displayed horizontally. IN THE DESIGN VIEW. NOT in the application itself, I know how to do that.

40,020,239

4

5

null

2016-08-04 02:24:53.743 UTC

3

2021-08-22 12:49:05.69 UTC

2016-10-16 22:54:23.427 UTC

null

796,231

null

796,231

null

1

28

android|xml|android-studio

11,301

Please Check this code <pre><code> <android.support.v7.widget.RecyclerView android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" app:layoutManager="android.support.v7.widget.LinearLayoutManager" /> </code></pre>

26,093,962

Can I change my Android app icon and name in later release?

This is going to sound stupid in a way, but I want to know if it is possible to change the application logo (icon) and Android name in my subsequent releases? Say, today I push my app in the Android market, and tomorrow I want to change the logo/icon (I know I "should" not do this), but is it possible to do so? Also, what about the application name? Thanks

26,094,044

5

0

null

2014-09-29 06:47:49.013 UTC

5

2020-12-26 01:17:35.727 UTC

2019-07-29 03:31:33.297 UTC

null

6,214,491

null

216,190

null

1

28

android|google-play|android-icons

52,711

Yes, you can change the name and logo whenever you want by changing <code>android:label</code> and <code>android:logo</code> attribute of your application tag in <code>AndroidManifest.xml file</code>. But, you can't change <code>Package</code> name once you uploaded app on play store.

54,839,672

Difference between Swagger & HATEOAS

Can anyone explain difference between Swagger & HATEOAS. I can Search many time but no buddy can explain the proper detailed answer this two aspects.

54,841,309

3

0

null

2019-02-23 08:28:45.53 UTC

9

2021-08-18 18:40:19.753 UTC

null

10,870,476

null

1

18

rest|spring-mvc|swagger|spring-hateoas

10,484

The main difference between Swagger and HATEOAS IMO, which is not covered in the accepted answer, is, that Swagger is only needed for RPC'esque APIs. Such APIs, however, have actually hardly anything to do with REST. There is a further, widespread misconception that anything exchanged via HTTP is automatically RESTful (~ in accordance with the REST archtitectural style), which it is not. REST just defines a set of constraints that are not choices or options but are mandatory. From start to finish. There is nothing wrong from being not RESTful, but it is wrong to term such an architecture REST. Swagger describe the operations that can be performed on an endpoint and the payload (including headers and the expected representation formats) that needs to be sent to the service and also describe what a client might expect as response. This allows Swagger to be used both as documentation as well as testing-framework for the API. Due to the tight coupling of Swagger to the API it behaves much like a typical RPC service description, i.e. similar to WSDL files in SOAP or stub or skeletton classes in RMI or CORBA. If either the endpoint changes or something in the payload changes, clients implementing against a Swagger documentation will probably break over time just reintroducing the same problems typical RPC implementations have. REST and HATEOAS, on the other side, are designed for disovery and further development. REST isn't a protocol but an architectural style to start with that describes the interaction flow between a client and server in a distributed system. It basically took the concepts which made the Web so successful and translated it onto the application layer. So the same concepts that apply to the browsable Web also apply to REST. Therefore it is no miracle that also HATEOAS (the usage of and support for links, link relations and link names) behave similar to the Web. On designing a REST architecture it is benefitial to think of a state machine where a server provides all of the information a client needs to take further actions. Asbjørn Ulsberg held a great talk back in 2016 where he <a href="https://www.youtube.com/watch?time_continue=1222&v=QIv9YR1bMwY&t=13m37s" rel="noreferrer">explains affordances and how a state machine might be implemented through HATEOAS</a>. Besides common or standardized media-types and relation names no out-of-band knowledge is necessary to interact with the service further. In the case of the toaster example Asbjørn gave in his talk, a toaster may have the states <code>off</code>, <code>on</code>, <code>heating</code> and <code>idle</code> where turning a toaster on will lead to a state transition from <code>off</code> to <code>on</code> followed by a transition to <code>heating</code> till a certain temperature is reached where the state is transitioned to <code>idle</code> and switches between <code>idle</code> and <code>heating</code> till the toaster is turned off. HATOAS will provide a client with the information on the current state and include links a client can invoke to transition to the next state, i.e. turning the toaster off again. It's important to stress here, that a client is provided by the server with every action the client might perform next. There is no need for a client implementor to consult any proprietary API documentation in order for a client to be able to interact with a REST service. Further, URIs do not have to be meaningful or designed to convey a semantical-expressive structure as clients will determine whether invoking that URI makes sense via the link-relation name. Such relation names are either specified by <a href="https://www.iana.org/assignments/link-relations/link-relations.xml" rel="noreferrer">IANA</a>, by a common approach such as <a href="http://dublincore.org/documents/dc-html/" rel="noreferrer">Dublin Core</a> or <a href="https://schema.org/" rel="noreferrer">schema.org</a> or by absolut URIs acting as <a href="https://www.rfc-editor.org/rfc/rfc8288#section-3.4.2" rel="noreferrer">extension attributes</a> which might point to a human-readable description, which further might be propagated to the user via mouse-over tooltips or such. I hope you can see by yourself that Swagger is only needed to describe RPC Web-APIs rather than applications that follow the REST architectural design. Messages exchanged via REST APIs should include all the information needed by a client to make informed choices on the next state transition. As such it is benefitial to design such message flows and interactions as state machine. <hr /> Update: <blockquote> How are Swagger and HATEOAS mutually exclusive? The former documents your endpoints (making auto-generating code possible) and the latter adds meta-information to your endpoints which tell the consumer what they can do (i.e. which other endpoints are available). These are very different things. </blockquote> I never stated that they are mutually exclusive, just that they serve two different purposes, where if you follow one approach the other gets more or less useless. Using both does not make any sense though. Let's move the discussion to the Web domain as this is probably more easily understandable and REST is de facto just a generalization of the concepts used on the Web, so doing this step is just natural and also a good recommendation in terms of designing REST architectures in general. Think of a case where you as a user want to send some data to the server. You have never used the service before so you basically don't know how a request has to look like. In Swagger you would call the endpoint documentation, select the option that most likely might solve your task, read up on how the request needs to look like and hack a test-case into your application that ends up generating a HTTP request that is sent to the respective location. Auto-generating code might spare you some hacking time, though you still need to integrate the stub classes into your application and test the whole thing at least once just to be safe. If you later on need to integrate a second service of that API or of yet an other API in general, you need to start from the beginning and look up the Swagger documentation, generate or hack the interaction code and integrate it into your domain. Plenty of manual steps involved and in cases of API changes you need to update your client as otherwise it might stop working. In the Web example however, you just start your browser/Web client, invoke the respective URI that allows you to send the data to the server and the server will most likely send you a HTML form you just need to fill out and click the send button which automatically sends the request to the server which will start to process it. This is HATEOAS. You used the given controls to drive your workflow. The server taught your client every little detail it needed to make a valid request. It served your client with the target URI to send the request to, the HTTP method it should use and most often also implicitly the media type the payload should be in. In addition to that it also gave your clients a skeleton of the expected and/or supported elements the payload should contain. I.e. the form may require you to fill out a couple of input fields, select among a given set of choices or use some other controls such as a date or time picker value that is translated to a valid date or time representation for you. All you needed to do was to invoke the respective resource in your Web client. No auto-generation, no integration into your browser/application. Using other services (from the same or different providers) will, most likely, just work the same way so no need to change or update your HTTP client (browser) as long as the media-type request and responses are exchanged are supported. In the case where you rely on Swagger RPC'esque documentation, that documentation is the truth on how to interact with the service. Mixing in some HATEOAS information doesn't provide you any benefits. In the Swagger case, carrying around additional meta-information that bloat up the request/response for no obvious reasons, as all the required information is given in the reference documentation, will, with some certainty, lead to people starting questioning the sanity of the developers of that service and ask for payload reduction. Just look here at SO for a while and you will find enough question asking on how to optimize the interaction further and further and reducing message size to a minimum as they process every little request and don't make use of response caching at all. In the HATEOAS case, pointing to an external reference is just useless as peers in such an architecture most likely already have support for the required necessities, such as URI, HTTP and the respective media types, implemented into it. In cases where custom media-types are used, support can be added at runtime via plug-ins or add-ons dynamically (if supported). So, Swagger and HATEOAS are not mutually exclusive but the other gets more or less useless once you decided for one route or the other.

7,283,134

What is the benefit of import in a namespace in R?

The namespace mechanism of R allows one to <code>export</code> functions which then are visible to the user. Furthermore, it allows to <code>import</code> functions from other packages. Whereas the benefit of export is obvious, I have more problems understanding the benefit of import. One benefit seems to be, that one can use functions from other packages without attaching the package and thereby saving memory. This is exemplified in section <a href="http://cran.r-project.org/doc/manuals/R-exts.html#An-example" rel="noreferrer">1.6.4 in the writing R extensions manual</a>. However, there must be other benefits of the import function. Especially, <a href="http://cran.r-project.org/doc/manuals/R-exts.html#Name-spaces-with-S4-classes-and-methods" rel="noreferrer">section 1.6.6 (that deals with S4 classes)</a> shows the <code>namespace</code> of the stats4 package: <pre><code> export(mle) importFrom("graphics", plot) importFrom("stats", optim, qchisq) ## For these, we define methods or (AIC, BIC, nobs) an implicit generic: importFrom("stats", AIC, BIC, coef, confint, logLik, nobs, profile, update, vcov) exportClasses(mle, profile.mle, summary.mle) ## All methods for imported generics: exportMethods(coef, confint, logLik, plot, profile, summary, show, update, vcov) ## implicit generics which do not have any methods here export(AIC, BIC, nobs) </code></pre> Here there are functions imported which are neither S4 classes nor generics (where it would make sense to use import as well, as documented in the example in <a href="http://cran.r-project.org/doc/manuals/R-exts.html#Name-spaces-with-S4-classes-and-methods" rel="noreferrer">that section</a>), but functions like <code>plot</code> from the <code>graphics</code> package which are automatically loaded when R starts. Therefore my question is, what is the benefit of importing functions like <code>plot</code>, <code>optim</code> or <code>qchisq</code>?

7,283,511

1

0

null

2011-09-02 12:04:09 UTC

13

2013-05-23 01:09:39.02 UTC

null

289,572

null

1

30

r|namespaces|package

5,852

If a function <code>foo</code> is imported from package Bar then it is found regardless of what the user does to their search path, e.g., by attaching a package Baz that also has a function <code>foo</code>. Without a name space, the package code would suddenly find itself using <code>Baz::foo</code>. There are also efficiency issues (<code>foo</code> is found immediately, rather than after searching through all symbols on the search path), but these are likely to be trivial for most applications. In the same way, <code>importFrom</code> is an improvement over <code>import</code> because of fewer collisions (or use of unintended functions) and more efficient look-up. With S4 (and S3) things can get quite complicated. A non-generic function like <code>graphics::plot</code> can be promoted to a generic (with <code>setGeneric</code>) in two different packages, and each generic can have its own set of methods attached. A package author will want to be precise about which <code>plot</code> generic, and hence which methods dispatch table, their classes and methods see. Calling a function with <code>pkg::foo</code> always resolves to the intended function. It requires that pkg be listed in the Depends: field of the DESCRIPTION file (maybe in Imports: but then it seems like misleading advertising to not import from pkg), polluting the user's search path. It also involves two symbol look-ups and a function call (<code>::</code>), and so is less efficient. The lazy and lack-of-attention-to-detail part of me also sees use of <code>::</code> as tedious and error prone. The package <a href="https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/codetoolsBioC" rel="noreferrer">codetoolsBioC</a> (via svn with username and password <code>readonly</code>) can generate a NAMESPACE file from an existing package (or at least it could before recent changes to R-devel introduced a NAMESPACE on packages without one; I haven't tried codetoolsBioC on such a package).

22,861,828

java string.getBytes("UTF-8") javascript equivalent

I have this string in java: <pre><code>"test.message" byte[] bytes = plaintext.getBytes("UTF-8"); //result: [116, 101, 115, 116, 46, 109, 101, 115, 115, 97, 103, 101] </code></pre> If I do the same thing in javascript: <pre><code> stringToByteArray: function (str) { str = unescape(encodeURIComponent(str)); var bytes = new Array(str.length); for (var i = 0; i < str.length; ++i) bytes[i] = str.charCodeAt(i); return bytes; }, </code></pre> I get: <pre><code> [7,163,140,72,178,72,244,241,149,43,67,124] </code></pre> I was under the impression that the unescape(encodeURIComponent()) would correctly translate the string to UTF-8. Is this not the case? Reference: <a href="http://ecmanaut.blogspot.be/2006/07/encoding-decoding-utf8-in-javascript.html" rel="noreferrer">http://ecmanaut.blogspot.be/2006/07/encoding-decoding-utf8-in-javascript.html</a>

22,861,911

2

0

null

2014-04-04 11:40:36.003 UTC

2

2014-09-01 03:48:25.48 UTC

2014-04-04 11:49:53.183 UTC

user429620

null

user429620

null

1

13

java|javascript|utf-8|byte|utf-16

44,451

JavaScript has no concept of character encoding for String, everything is in UTF-16. Most of time time the value of a <code>char</code> in UTF-16 matches UTF-8, so you can forget it's any different. There are more optimal ways to do this but <pre><code>function s(x) {return x.charCodeAt(0);} "test.message".split('').map(s); // [116, 101, 115, 116, 46, 109, 101, 115, 115, 97, 103, 101] </code></pre> So what is <code>unescape(encodeURIComponent(str))</code> doing? Let's look at each individually, <ol> <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent" rel="noreferrer"><code>encodeURIComponent</code></a> is converting every character in <code>str</code> which is illegal or has a meaning in URI Syntax into a URI escaped version so that there is no problem using it as a key or value in the search component of a URI, for example <code>encodeURIComponent('&='); // "%26%3D"</code> Notice how this is now a 6 character long String.</li> <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/unescape" rel="noreferrer"><code>unescape</code></a> is actually depreciated, but it does a similar job to <code>decodeURI</code> or <code>decodeURIComponent</code> (the reverse of <code>encodeURIComponent</code>). If we look in the <a href="http://es5.github.io/#B.2.2" rel="noreferrer">ES5 spec</a> we can see <code>11. Let c be the character whose code unit value is the integer represented by the four hexadecimal digits at positions k+2, k+3, k+4, and k+5 within Result(1).</code> So, <code>4</code> digits is <code>2</code> bytes is "UTF-8", however as I mentioned, all Strings are UTF-16, so it's really a UTF-16 string limiting itself to UTF-8.</li> </ol>

22,507,671

bootstrap datepicker change date event doesnt fire up when manually editing dates or clearing date

<pre><code><script type="text/javascript"> // When the document is ready $(document).ready(function () { $('.datepicker').datepicker({ format: "yyyy-mm-dd", }).on('changeDate', function(ev){ // do what you want here $(this).datepicker('hide'); }).on('changeDate', function(ev){ if ($('#startdate').val() != '' && $('#enddate').val() != ''){ $('#period').text(diffInDays() + ' d.'); } else { $('#period').text("-"); } }); }); </script> </code></pre> So here's what my datepicker looks like. So basically when I change date by clicking mouse it works good, however when I manually change date with keyboard or manually clear the date change date event doesn't get called. Is this a bug or am I doing something wrong here ?

22,507,814

11

0

null

2014-03-19 13:37:47.437 UTC

6

2021-08-30 18:24:34.843 UTC

2017-09-18 09:10:55.223 UTC

null

8,311,909

null

555,479

null

1

25

javascript|jquery|twitter-bootstrap|datepicker|bootstrap-datepicker

137,164

You have to use the <code>change</code> event on the input itself if you want to respond to manual input, because the <code>changeDate</code> event is only for when the date is changed using the datepicker. Try something like this: <pre><code>$(document).ready(function() { $('.datepicker').datepicker({ format: "yyyy-mm-dd", }) //Listen for the change even on the input .change(dateChanged) .on('changeDate', dateChanged); }); function dateChanged(ev) { $(this).datepicker('hide'); if ($('#startdate').val() != '' && $('#enddate').val() != '') { $('#period').text(diffInDays() + ' d.'); } else { $('#period').text("-"); } } </code></pre>

56,246,416

How can I configure NLog in .NET Core with appsettings.json instead of an nlog.config file?

The NLog documentation explains how to configure NLog for .NET Core applications by using an <code>nlog.config</code> XML file. However, I'd prefer to have just one configuration file for my application - <code>appsettings.json</code>. For .NET Framework apps, it's possible to put the NLog configuration in <code>app.config</code> or <code>web.config</code>. Is it possible to put the NLog config in <code>appsettings.json</code> in the same way? For example, how could I put this configuration example from the <a href="https://github.com/NLog/NLog.Web/wiki/Getting-started-with-ASP.NET-Core-2" rel="noreferrer">NLog documentation for ASP.NET Core 2</a> into <code>appsettings.json</code>? <pre class="lang-xml prettyprint-override"><code><?xml version="1.0" encoding="utf-8" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true" internalLogLevel="Info" internalLogFile="c:\temp\internal-nlog.txt">  <extensions> <add assembly="NLog.Web.AspNetCore"/> </extensions>  <targets>  <target xsi:type="File" name="allfile" fileName="c:\temp\nlog-all-${shortdate}.log" layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}" />  <target xsi:type="File" name="ownFile-web" fileName="c:\temp\nlog-own-${shortdate}.log" layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" /> </targets>  <rules>  <logger name="*" minlevel="Trace" writeTo="allfile" />  <logger name="Microsoft.*" maxlevel="Info" final="true" />  <logger name="*" minlevel="Trace" writeTo="ownFile-web" /> </rules> </nlog> </code></pre>

56,246,417

3

0

null

2019-05-21 21:10:35.907 UTC

10

2022-02-01 18:01:41.657 UTC

2019-05-21 21:19:52.273 UTC

null

2,457,005

null

2,457,005

null

1

23

asp.net-core|.net-core|configuration-files|nlog

29,827

Yes, this is possible but has a minimum version requirement. You must be using NLog.Extensions.Logging >= 1.5.0. Note that for ASP.NET Core applications this will be installed as a dependency if you install NLog.Web.AspNetCore >= 4.8.2. You can then create an <code>NLog</code> section in <code>appsettings.json</code> and load it with the following code: <pre class="lang-cs prettyprint-override"><code>var config = new ConfigurationBuilder() .SetBasePath(System.IO.Directory.GetCurrentDirectory()) .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true).Build(); NLog.Config.LoggingConfiguration nlogConfig = new NLogLoggingConfiguration(config.GetSection("NLog")); </code></pre> For example, for an ASP.NET Core application, your <code>Main()</code> method in <code>Program.cs</code> should look something like this: <pre class="lang-cs prettyprint-override"><code>public static void Main(string[] args) { var config = new ConfigurationBuilder() .SetBasePath(System.IO.Directory.GetCurrentDirectory()) .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true).Build(); LogManager.Configuration = new NLogLoggingConfiguration(config.GetSection("NLog")); var logger = NLog.Web.NLogBuilder.ConfigureNLog(LogManager.Configuration).GetCurrentClassLogger(); try { logger.Debug("Init main"); CreateWebHostBuilder(args).Build().Run(); } catch (Exception ex) { logger.Error(ex, "Stopped program because of exception"); } finally { LogManager.Shutdown(); } } </code></pre> A configuration like the one in the question can be achieved with the following settings in <code>appsettings.json</code>: <pre class="lang-json prettyprint-override"><code>"NLog":{ "internalLogLevel":"Info", "internalLogFile":"c:\\temp\\internal-nlog.txt", "extensions": [ { "assembly": "NLog.Extensions.Logging" }, { "assembly": "NLog.Web.AspNetCore" } ], "targets":{ "allfile":{ "type":"File", "fileName":"c:\\temp\\nlog-all-${shortdate}.log", "layout":"${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}" }, "ownFile-web":{ "type":"File", "fileName":"c:\\temp\\nlog-own-${shortdate}.log", "layout":"${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" } }, "rules":[ { "logger":"*", "minLevel":"Trace", "writeTo":"allfile" }, { "logger":"Microsoft.*", "maxLevel":"Info", "final":"true" }, { "logger":"*", "minLevel":"Trace", "writeTo":"ownFile-web" } ] } </code></pre> Edit: Thanks to Rolf Kristensen (who developed this functionality for NLog in the first place!) for pointing out this wiki page with more documentation on this feature: <a href="https://github.com/NLog/NLog.Extensions.Logging/wiki/NLog-configuration-with-appsettings.json" rel="noreferrer">https://github.com/NLog/NLog.Extensions.Logging/wiki/NLog-configuration-with-appsettings.json</a>

56,275,425

Pandas: TypeError: '>' not supported between instances of 'int' and 'str' when selecting on date column

I have a Pandas DataFrame with a column with TimeStamps. I can select date ranges from this column. But after I make change to other columns in the DataFrame, I can no longer and I get the error "TypeError: '>' not supported between instances of 'int' and 'str'". The code below reproduce the problem: <ul> <li>Generate a DataFrame with some random numbers</li> <li>Add a column with dates</li> <li>Select on the date column <pre><code>df = pd.DataFrame(np.random.random((200,3))) df['date'] = pd.date_range('2000-1-1', periods=200, freq='D') mask = (df['date'] > '2000-6-1') & (df['date'] <= '2000-6-10') print(df.loc[mask]) </code></pre></li> </ul> All good: <pre><code> 0 1 2 date 153 0.280575 0.810817 0.534509 2000-06-02 154 0.490319 0.873906 0.465698 2000-06-03 155 0.070790 0.898340 0.390777 2000-06-04 156 0.896007 0.824134 0.134484 2000-06-05 157 0.539633 0.814883 0.976257 2000-06-06 158 0.772454 0.420732 0.499719 2000-06-07 159 0.498020 0.495946 0.546043 2000-06-08 160 0.562385 0.460190 0.480170 2000-06-09 161 0.924412 0.611929 0.459360 2000-06-10 </code></pre> However, now I set column 0 to 0 if it exceeds 0.7 and repeat: <pre><code>df[df[0] > 0.7] = 0 mask = (df['date'] > '2000-6-1') & (df['date'] <= '2000-6-10') </code></pre> This gives the error: <pre><code>TypeError: '>' not supported between instances of 'int' and 'str' </code></pre> Why does this happen and how do I avoid it?

56,275,604

3

0

null

2019-05-23 12:37:53.55 UTC

1

2021-12-23 12:06:02.307 UTC

2019-05-23 14:10:38.43 UTC

null

1,263,935

null

1,263,935

null

1

15

python|pandas

42,235

You can compare a timestamp (<code>Timestamp('2000-01-01 00:00:00')</code>) to a string, pandas will convert the string to <code>Timestamp</code> for you. But once you set the value to <code>0</code>, you cannot compare an <code>int</code> to a <code>str</code>. Another way to go around this is to change order of your operations. <pre><code>filters = df[0] > 0.7 mask = (df['date'] > '2000-6-1') & (df['date'] <= '2000-6-10') df[filters] = 0 print(df.loc[mask & filters]) </code></pre> Also, you mentioned you want to set column 0 to 0 if it exceeds 0.7, so <code>df[df[0]>0.7] = 0</code> does not do exactly what you want: it sets the entire rows to <code>0</code>. Instead: <pre><code>df.loc[df[0] > 0.7, 0] = 0 </code></pre> Then you should not have any problem with the original mask.

41,904,806

How to upload a file to S3 and make it public using boto3?

I am able to upload an image file using: <pre><code>s3 = session.resource('s3') bucket = s3.Bucket(S3_BUCKET) bucket.upload_file(file, key) </code></pre> However, I want to make the file public too. I tried looking up for some functions to set ACL for the file but seems like boto3 have changes their API and removed some functions. Is there a way to do it in the latest release of boto3?

41,909,293

5

0

null

2017-01-27 23:45:09.767 UTC

17

2022-02-25 01:38:04.333 UTC

null

1,993,709

null

1

82

python|amazon-s3|boto|boto3

52,891

I was able to do it using objectAcl API: <pre><code>s3 = boto3.resource('s3') object_acl = s3.ObjectAcl('bucket_name','object_key') response = object_acl.put(ACL='public-read') </code></pre> For details: <a href="http://boto3.readthedocs.io/en/latest/reference/services/s3.html#objectacl" rel="noreferrer">http://boto3.readthedocs.io/en/latest/reference/services/s3.html#objectacl</a>

50,548,629

How to open an existing Flutter Project in Android Studio

I might sound noob here but I can't see a clear way of opening existing Flutter Project in Android Studio <code>3.1.2</code>. I checked <a href="https://stackoverflow.com/questions/49067999/flutter-how-to-import-existing-flutter-project-as-a-gradle-project">this</a> but it didn't work. So I want to know if there is a standard IDE way of doing this? I also can't find any docs clearly mentioning it. Do I need to install a 3rd party plugin? After opening it as an Existing Android Studio Project, I get the following error: <a href="https://i.stack.imgur.com/9w72t.png" rel="noreferrer"><img src="https://i.stack.imgur.com/9w72t.png" alt="error"></a> The error is solved by running <code>Get Dependencies</code>. Is it a normal behavior?

50,548,664

7

0

null

2018-05-27 02:51:00.09 UTC

1

2021-09-19 04:53:44.65 UTC

2018-05-27 03:09:53.627 UTC

null

7,337,723

null

7,337,723

null

1

23

android-studio|flutter

42,213

<ol> <li>Install Flutter plugin for Android studio: <a href="https://flutter.io/get-started/editor/" rel="noreferrer">https://flutter.io/get-started/editor/</a></li> <li>Open Android Studio</li> <li>Open existing Android Studio project by using one of below methods:</li> </ol> <hr> EASIEST WAY: Drag your project folder and drop to Android Studio. <hr> Other ways: <a href="https://i.stack.imgur.com/ap05O.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ap05O.png" alt="Android Studio 1"></a> <a href="https://i.stack.imgur.com/9Yg5l.png" rel="noreferrer"><img src="https://i.stack.imgur.com/9Yg5l.png" alt="Android Studio 2"></a> <a href="https://i.stack.imgur.com/aUTZo.png" rel="noreferrer"><img src="https://i.stack.imgur.com/aUTZo.png" alt="Android Studio 3"></a>

2,477,321

Sync GIT and ClearCase

I am currently working on ClearCase and now migrating to GIT. But we need this migration in a way that all work will be done in GIT and the data will be synced backed to ClearCase stream. We will have the same branch names and stream names in both GIT and CC, so scripting shouldn't be a problem. The problem here is, Can someone suggest which is the best model to sync CC and GIT <ol> <li>Have all the Vobs in CC as single repo in GIT, and have the major stream in CC as various branches in GIT. - Single GIT repo (VOBS) and many branches (CC streams). - This takes up less space as VOBs are kept as single repo with many branches.</li> <li>Have important CC branches as independent GIT repositories and each repository having all the CC VOBs. - Many GIT repo for many CC branch - This will take up lots of space as VOBs will be replicated across.</li> </ol> Which do you think is the best way to keep it in sync with ClearCase

2,478,707

3

0

null

2010-03-19 12:45:44.14 UTC

10

2016-08-12 14:29:48.65 UTC

null

289,715

null

1

13

git|clearcase|git-branch

19,141

<blockquote> Have all the Vobs in CC as single repo in GIT, and have the major stream in CC as various branches in GIT </blockquote> No and yes <blockquote> Have important CC branches as independent GIT repositories and each repository having all the CC VOBs </blockquote> No and No Re-reading <a href="https://stackoverflow.com/questions/984707/what-are-the-git-limits/984973#984973">my answer about Git limits</a>, you shouldn't try to cram "everything" in a Git repo. See also "<a href="https://stackoverflow.com/questions/645008/what-are-the-basic-clearcase-concepts-every-developer-should-know/645771#645771">What are the basic clearcase concepts every developer should know?</a>" for a comparison between ClearCase and Git. Stream can safely be imported as branch. But VOBs are not necessarily a Git Repo. If you are using UCM, I would recommend one Git repo per UCM component. Anyway, you need to record in your Git Repo a way to know what ClearCase view to use to sync back (through a <a href="https://stackoverflow.com/questions/138321/how-can-i-use-clearcase-to-add-to-source-control-recursively/144310#144310">simple <code>clearfsimport</code></a>) your data. The view used for that ClearCase data re-import will be a UCM view automatically associated to the right stream, for the right VOB. <hr> Note: I mention in "<a href="https://stackoverflow.com/questions/2342131/how-to-bridge-git-to-clearcase/2342164#2342164">How to bridge git to ClearCase?</a>" a simpler solution, but which does not import the all history in a Git repo.

3,105,003

Literal does not match format string for Oracle SQL to_date on a string column

Dear SQL Gurus from Stack Overflow: Environment: Oracle I'm trying to understand why I can't do a to_date selection on a table column that contains strings. Note tableZ with a column of name Value in the example below contains a bunch of strings, some of which are the correct format, for example 6/20/2010 00:00:00. tableZ <pre><code>| Value | | __________________ | | 6/21/2010 00:00:00 | | Somestring | | Some Other strings | | 6/21/2010 00:00:00 | | 6/22/2010 00:00:00 | </code></pre> The following works <pre><code>SELECT To_Date(c.Value, 'MM/DD/YYYY HH24:MI:SS') somedate FROM tableX a, tableY b, tableZ c WHERE Lower(a.name) = 'somedate' AND a.id = b.other_id AND b.id = c.new_id </code></pre> This returns something like (which is good): <pre><code>| somedate | | __________________ | | 21.06.2010 00:00:00 | | 21.06.2010 00:00:00 | | 22.06.2010 00:00:00 | </code></pre> The following does not work <pre><code>SELECT To_Date(c.Value, 'MM/DD/YYYY HH24:MI:SS') somedate FROM properties$aud a, template_properties$aud b, consumable_properties$aud c WHERE Lower(a.name) = 'somedate' AND a.id = b.property_id AND b.id = c.template_property_id AND To_Date(c.Value, 'MM/DD/YYYY HH24:MI:SS') IS NOT NULL </code></pre> Comes back with: ORA-01861: literal does not match format string What am I missing here? Just a quick note: <pre><code> ... AND b.id = c.template_property_id AND To_Date(c.Value, 'DD.MM.YYYY HH24:MI:SS') IS NOT NULL </code></pre> doesn't work either. Thanks!! Goal to be able to do date BETWEEN queries on c.value in order to select date ranges.

3,105,218

4

0

null

2010-06-23 19:50:06.7 UTC

null

2013-11-27 10:16:57.18 UTC

null

129,735

null

1

6

sql|oracle|datetime|to-date

46,320

The order that Oracle evaluates the conditions found in the where clause is not fixed. That is to say that it can choose to evaluate the condition containing TO_DATE before the other criteria, in which case the query will fail. To prevent that, add the ordered_predicates hint to your query, but be aware that this may require additional manual tuning to improve performance. <pre><code>SELECT /*+ ordered_predicates */ To_Date(c.Value, 'MM/DD/YYYY HH24:MI:SS') somedate FROM properties$aud a, template_properties$aud b, consumable_properties$aud c WHERE Lower(a.name) = 'somedate' AND a.id = b.property_id AND b.id = c.template_property_id AND To_Date(c.Value, 'MM/DD/YYYY HH24:MI:SS') IS NOT NULL </code></pre> <hr> Apparently <code>ordered_predicates</code> is deprecated starting with 10g. In that case, I think your only option is to use a sub-query in such a way that optimizer is forced to evaluate it first (i.e. it can't combine the queries). The easiest way to do this is to put <code>rownum</code> in the where statement of the inner query. <pre><code>SELECT To_Date(c.Value, 'MM/DD/YYYY HH24:MI:SS') somedate FROM (SELECT value FROM properties$aud a, template_properties$aud b, consumable_properties$aud c WHERE Lower(a.name) = 'somedate' AND a.id = b.property_id AND b.id = c.template_property_id AND rownum > 0) WHERE To_Date(c.Value, 'MM/DD/YYYY HH24:MI:SS') IS NOT NULL </code></pre>

2,877,436

How can I ask Maven for a list of the default repositories?

What command can I use to ask Maven for a list of the default repositories that it searches for its dependencies? If no such command exists, where else may I look to find this default list?

2,878,312

4

0

null

2010-05-20 20:11:31.757 UTC

7

2018-11-22 12:34:18.717 UTC

2010-07-27 10:28:17.13 UTC

null

342,852

null

107,158

null

1

32

java|maven-2|build-process

26,751

on the command line, execute <pre><code>mvn help:evaluate </code></pre> then, when prompted, enter <pre><code>${project.repositories} </code></pre> see <a href="http://maven.apache.org/plugins/maven-help-plugin/evaluate-mojo.html" rel="noreferrer">http://maven.apache.org/plugins/maven-help-plugin/evaluate-mojo.html</a>

2,618,989

How can I remove my last commit in my local git repository

When I do a 'git pull', I have conflict with the head commit. So I did a 'git rebase --abort' Can I 'save' my commit to a "patch" and then do a git pull? What I want to emulate is: <ul> <li>I did not commit, but I did a 'git stash' instead</li> <li>Do a git pull to avoid any merge error</li> </ul> So I need somehow to 'turn back the clock'. Is that possible with git?

2,619,068

4

0

null

2010-04-11 22:44:23.127 UTC

19

2016-01-12 19:40:17.317 UTC

null

1,139,725

null

286,802

null

1

36

git

52,142

Your <code>7826b2</code> patch will still cause a conflict when it's applied after pulling, but you can do the following: <pre><code>git reset --soft HEAD^ git stash git pull git stash pop # Will cause a conflict git commit # Re-commit 7826b2 </code></pre> Another workflow is also possible: <pre><code>git reset --hard HEAD^ git pull git cherry-pick 7826b2 # Will cause a conflict </code></pre> The second workflow relies on the fact that Git keeps the <code>7826b2</code> commit in the reflog (you can think of it as the recycle bin) even though you reset the changes it introduced with the first line.

31,909,664

Display phone numbers as left-to-right in right-to-left language

I have a display of a users contact details where the user can alternate the display between left-to-right and right-to-left text. In the Arabic language, the text is displayed and read from right-to-left, but phone numbers, web addresses and email addresses are displayed and read left-to-right in Arabic and other right-to-left languages. I have been able to alternate the display of the users contact details, but the phone numbers do not display left-to-right when there is a space in the phone number. Here is a visual display of the issue I have: The following is the left-to-right display in the English language: <a href="https://i.stack.imgur.com/0Cko1.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0Cko1.png" alt="enter image description here"></a> Here is the same details as above but displayed right-to-left in the Arabic language (the phone numbers (in the lime colour) have spaces and are not displayed correctly): <a href="https://i.stack.imgur.com/FV2o9.png" rel="noreferrer"><img src="https://i.stack.imgur.com/FV2o9.png" alt="enter image description here"></a> Here is the same details again, displayed right-to-left in the Arabic language, but with spaces eliminated from the phone numbers (the phone numbers (in the lime colour) are displayed correctly here): <a href="https://i.stack.imgur.com/kbWOK.png" rel="noreferrer"><img src="https://i.stack.imgur.com/kbWOK.png" alt="enter image description here"></a> Does anyone know how to display the phone numbers with spaces in them as left-to-right when in a right-to-left language? Here is my HTML code: <pre><code><div class="row contact_reverse"> {{ #if contact_details_phone }} <div class="col-sm-4 col-md-4 col-lg-4 ellipsis contact_reverse" dir="rtl" style="direction: rtl;"> {{ contact_details_phone }} </div> {{ /if }} {{ #if contact_details_mobile_phone }} <div class="col-sm-4 col-md-4 col-lg-4 ellipsis contact_reverse" dir="rtl" style="direction: rtl;"> {{ contact_details_mobile_phone }} </div> {{ /if }} {{ #if contact_details_email_address }} <div class="col-sm-4 col-md-4 col-lg-4 ellipsis contact_reverse" dir="rtl" style="direction: rtl;"> {{ contact_details_email_address }} </div> {{ /if }} {{ #if contact_details_linkedin_address }} <div class="col-sm-4 col-md-4 col-lg-4 ellipsis contact_reverse" dir="rtl" style="direction: rtl;"> {{ contact_details_linkedin_address }} </div> {{ /if }} {{ #if contact_details_facebook_address }} <div class="col-sm-4 col-md-4 col-lg-4 ellipsis contact_reverse" dir="rtl" style="direction: rtl;"> {{ contact_details_facebook_address }} </div> {{ /if }} {{ #if contact_details_twitter_address }} <div class="col-sm-4 col-md-4 col-lg-4 ellipsis contact_reverse" dir="rtl" style="direction: rtl;"> {{ contact_details_twitter_address }} </div> {{ /if }} </div> </code></pre> Here is my CSS code: <pre><code>.contact_reverse { background-color: red; -moz-transform: scale(-1, 1); -webkit-transform: scale(-1, 1); -o-transform: scale(-1, 1); -ms-transform: scale(-1, 1); transform: scale(-1, 1); } .ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } .icon_size20 { font-size: 20px !important; } .icon_padding_rtl { padding-left: 6px !important; background-color: peru; } .contact_dir_reverse { background-color: lime; direction: ltr; } </code></pre>

31,909,788

3

0

null

2015-08-09 23:03:11.983 UTC

8

2021-12-10 00:06:37.277 UTC

null

1,261,774

null

1

20

html|css|right-to-left|left-to-right

10,627

I just figured this out! I added the <code>unicode-bidi: embed;</code> to the <code>contact_dir_reverse</code> css class, like so: <pre><code>.contact_dir_reverse { background-color: lime; direction: ltr; unicode-bidi: embed; } </code></pre> I hope that this will help someone.

32,029,094

how to make <svg> 100% width

I am trying to make this <code><svg></code> element stretch to 100% of the screen width: <pre><code> <svg height="100" width="100"> <path d="M0 0 L100 0 L50 100 Z" /> </svg> </code></pre> What do I need to do?

32,029,371

1

0

null

2015-08-15 20:35:10.443 UTC

5

2018-12-18 10:06:17.19 UTC

null

63,810

null

5,180,453

null

1

23

html|svg

39,106

The viewBox defines the co-ordinates you can see. Height and width define the size of the SVG. E.g. <div class="snippet" data-lang="js" data-hide="false"> <div class="snippet-code"> <pre class="snippet-code-css lang-css prettyprint-override"><code>html, body { width: 100%; height: 100%; }</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code><svg height="100%" width="100%" viewBox="0 0 100 100" preserveAspectRatio="none"> <path d="M0 0 L100 0 L50 100 Z" /> </svg></code></pre> </div> </div>

31,943,989

Spring Data JPA And NamedEntityGraphs

currently I am wrestling with being able to fetch only the data I need. The findAll() method needs to fetch data dependant on where its getting called. I do not want to end up writing different methods for each entity graph. Also, I would avoid calling entitymanagers and forming the (repetitive) queries myself. Basicly I want to use the build in findAll method, but with the entity graph of my liking. Any chance? <pre><code>@Entity @Table(name="complaints") @NamedEntityGraphs({ @NamedEntityGraph(name="allJoinsButMessages", attributeNodes = { @NamedAttributeNode("customer"), @NamedAttributeNode("handling_employee"), @NamedAttributeNode("genre") }), @NamedEntityGraph(name="allJoins", attributeNodes = { @NamedAttributeNode("customer"), @NamedAttributeNode("handling_employee"), @NamedAttributeNode("genre"), @NamedAttributeNode("complaintMessages") }), @NamedEntityGraph(name="noJoins", attributeNodes = { }) }) public class Complaint implements Serializable{ private static final long serialVersionUID = 1L; @Id @GeneratedValue private long id; private Timestamp date; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "customer") private User customer; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "handling_employee") private User handling_employee; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name="genre") private Genre genre; private boolean closed; @OneToMany(mappedBy = "complaint", fetch = FetchType.LAZY, cascade = CascadeType.ALL) private List<ComplaintMessage> complaintMessages = new ArrayList<ComplaintMessage>(); //getters and setters } </code></pre> And my JPARepository <pre><code>@Repository public interface ComplaintRepository extends JpaRepository<Complaint, Long>{ List<Complaint> findByClosed(boolean closed); @EntityGraph(value = "allJoinsButMessages" , type=EntityGraphType.FETCH) @Override List<Complaint> findAll(Sort sort); } </code></pre>

33,373,905

6

1

null

2015-08-11 14:03:07.6 UTC

22

2021-06-28 19:04:55.75 UTC

null

3,540,120

null

1

58

jpa|fetch|spring-data-jpa|entitygraph

52,527

We ran into a similar problem and devised several prospective solutions but there doesn't seem to be an elegant solution for what seems to be a common problem. 1) Prefixes. Data jpa affords several prefixes (find, get, ...) for a method name. One possibility is to use different prefixes with different named graphs. This is the least work but hides the meaning of the method from the developer and has a great deal of potential to cause some non-obvious problems with the wrong entities loading. <pre><code>@Repository @Transactional public interface UserRepository extends CrudRepository<User, Integer>, UserRepositoryCustom { @EntityGraph(value = "User.membershipYearsAndPreferences", type = EntityGraphType.LOAD) User findByUserID(int id); @EntityGraph(value = "User.membershipYears", type = EntityGraphType.LOAD) User readByUserId(int id); } </code></pre> 2) CustomRepository. Another possible solutions is to create custom query methods and inject the EntityManager. This solution gives you the cleanest interface to your repository because you can name your methods something meaningful, but it is a significant amount of complexity to add to your code to provide the solution AND you are manually grabbing the entity manager instead of using Spring magic. <pre><code>interface UserRepositoryCustom { public User findUserWithMembershipYearsById(int id); } class UserRepositoryImpl implements UserRepositoryCustom { @PersistenceContext private EntityManager em; @Override public User findUserWithMembershipYearsById(int id) { User result = null; List<User> users = em.createQuery("SELECT u FROM users AS u WHERE u.id = :id", User.class) .setParameter("id", id) .setHint("javax.persistence.fetchgraph", em.getEntityGraph("User.membershipYears")) .getResultList(); if(users.size() >= 0) { result = users.get(0); } return result; } } @Repository @Transactional public interface UserRepository extends CrudRepository<User, Integer>, UserRepositoryCustom { @EntityGraph(value = "User.membershipYearsAndPreferences", type = EntityGraphType.LOAD) User findByUserID(int id); } </code></pre> 3) JPQL. Essentially this is just giving up on named entity graphs and using JPQL to handle your joins for you. Non-ideal in my opinion. <pre><code>@Repository @Transactional public interface UserRepository extends CrudRepository<User, Integer>, UserRepositoryCustom { @EntityGraph(value = "User.membershipYearsAndPreferences", type = EntityGraphType.LOAD) User findByUserID(int id); @Query("SELECT u FROM users WHERE u.id=:id JOIN??????????????????????????") User findUserWithTags(@Param("id") final int id); } </code></pre> We went with option 1 because it is the simplest in implementation but this does mean when we use our repositories we have have to look at the fetch methods to make sure we are using the one with the correct entity graph. Good luck. Sources: <ul> <li><a href="https://stackoverflow.com/questions/31216971/jpa-entitygraph-with-different-views-using-spring">JPA EntityGraph with different views using Spring</a></li> <li><a href="https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.query-methods" rel="noreferrer">https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.query-methods</a></li> </ul> I don't have enough reputation to post all of my sources. Sorry :(

28,417,140

Styling default JavaFX Dialogs

I'm looking for a way to style the default JavaFX Dialog (<code>javafx.scene.control.Dialog</code>). I tried to get the DialogPane and add a stylesheet, but it covers only a small piece of the dialog. I would prefer to style only with an external css file and without to add styleClasses over the code. This would look messy (header, content, own content on the content and more..) I googled already alot and only found examples for ControlsFX, but since jdk8_40 JavaFX has it's own Dialogs i use them now. Any suggestions? Edit: Since José Pereda posted the solution i created my own dialog.css. I'll post it here because it covers the whole dialog and maybe someone want's to copy&paste it. Note .dialog-pane is already a given styleClass name so you don't need to apply your own. Of course, Josés is more fine detailed. <pre><code>.dialog-pane { -fx-background-color: black; } .dialog-pane .label { -fx-text-fill: white; } .dialog-pane:header .header-panel { -fx-background-color: black; } .dialog-pane:header .header-panel .label { -fx-font-style: italic; -fx-font-size: 2em; } </code></pre>

28,421,229

1

0

null

2015-02-09 18:53:16.56 UTC

11

2016-12-22 16:21:17.04 UTC

null

1,266,705

null

1,266,705

null

1

35

javafx|dialog|javafx-8

41,385

You can style your dialogs with your own css file, but for that you need to take into consideration that the dialog is in fact a new stage, with a new scene, and the root node is a <code>DialogPane</code> instance. So once you create some dialog instance: <pre><code>@Override public void start(Stage primaryStage) { Alert alert = new Alert(AlertType.CONFIRMATION); alert.setTitle("Confirmation Dialog"); alert.setHeaderText("This is a Custom Confirmation Dialog"); alert.setContentText("We override the style classes of the dialog"); ... } </code></pre> you can access to its dialog pane and add your own style sheet and your own class selector: <pre><code>DialogPane dialogPane = alert.getDialogPane(); dialogPane.getStylesheets().add( getClass().getResource("myDialogs.css").toExternalForm()); dialogPane.getStyleClass().add("myDialog"); </code></pre> Now the trick is knowing all the rules a <code>Dialog</code> style sheet has implemented by default. And that's a difficult task... since they are not in the <code>modena.css</code> file, as for all the regular controls. On the contrary, they are found in the <code>modena.bss</code> file, a binary file located in the jfxrt.jar under private packages. After some digging I've managed to get those rules, so your custom <code>myDialogs.css</code> file will look something like this: <pre><code>.myDialog{ -fx-background-color: #f9d900; } .myDialog > *.button-bar > *.container{ -fx-background-color: #a9e200; } .myDialog > *.label.content{ -fx-font-size: 14px; -fx-font-weight: bold; } .myDialog:header *.header-panel{ -fx-background-color: #a59c31; } .myDialog:header *.header-panel *.label{ -fx-font-size: 18px; -fx-font-style: italic; -fx-fill: #292929; } </code></pre> And you will have your styled dialog: <img src="https://i.stack.imgur.com/y6yJm.png" alt="Styled dialog"> <del>Note that being a bss file under private packages, these selectors can change without notice in future releases.</del> EDIT I've just found that the <code>.dialog-pane</code> selector is already part of <a href="http://hg.openjdk.java.net/openjfx/8u40/rt/file/6cc08ec1ea82/modules/controls/src/main/resources/com/sun/javafx/scene/control/skin/modena/modena.css">modena.css</a> in the last 8u40 <a href="https://jdk8.java.net/download.html">early versions</a>, so you can find all the selectors and rules applied to the dialog pane there.

51,389,042

Difference between auto_now and auto_now_add

What I understood in <code>Django</code> models field's attributes is <ul> <li><code>auto_now</code> - updates the value of field to current time and date every time the Model.save() is called.</li> <li><code>auto_now_add</code> - updates the value with the time and date of creation of record.</li> </ul> My question is what if a filed in model contains both the <code>auto_now</code> and <code>auto_now_add</code> set to True? What happens in that case?

51,389,274

5

0

null

2018-07-17 19:38:08.173 UTC

7

2021-11-10 09:04:06.903 UTC

2019-07-04 13:59:05.767 UTC

null

4,626,254

null

10,095,725

null

1

69

python|django|django-models|django-forms|django-templates

36,014

<code>auto_now</code> takes precedence (obviously, because it updates field each time, while <code>auto_now_add</code> updates on creation only). Here is the code for <a href="https://docs.djangoproject.com/en/2.0/_modules/django/db/models/fields/#DateField" rel="noreferrer"><code>DateField.pre_save</code></a> method: <pre><code>def pre_save(self, model_instance, add): if self.auto_now or (self.auto_now_add and add): value = datetime.date.today() setattr(model_instance, self.attname, value) return value else: return super().pre_save(model_instance, add) </code></pre> As you can see, if <code>auto_now</code> is set or both <code>auto_now_add</code> is set and the object is new, the field will receive current day. The same for <a href="https://docs.djangoproject.com/en/2.0/_modules/django/db/models/fields/#DateTimeField" rel="noreferrer"><code>DateTimeField.pre_save</code></a>: <pre><code>def pre_save(self, model_instance, add): if self.auto_now or (self.auto_now_add and add): value = timezone.now() setattr(model_instance, self.attname, value) return value else: return super().pre_save(model_instance, add) </code></pre>

38,387,125

How do I make a fetch request using NSManagedObject's new fetchRequest function?

In iOS 10 the CoreData team added a new "fetchRequest" method to NSManagedObject. It looks like this: <pre><code>public class func fetchRequest() -> NSFetchRequest<NSFetchRequestResult> </code></pre> Which, from what I understand, allows us to replace this: <pre><code>let request = NSFetchRequest<MyEntity>(entityName: "MyEntity") </code></pre> with this: <pre><code>let request = MyEntity.fetchRequest() </code></pre> However, when I try to make a simple request like this: <pre><code>let request = MyEntity.fetchRequest() do { results = try request.execute() } catch let error { print("failed to fetch coffee object: \(error)") } </code></pre> I receive the following error: <blockquote> Error Domain=NSCocoaErrorDomain Code=134060 "(null)" UserInfo={message=Cannot fetch without an NSManagedObjectContext in scope} </blockquote> So, clearly the error is stating that I need to bring an NSManagedObjectContext into scope. I've been looking for examples but can seem to find a full example of how to perform a request using the new API features. <h2>Question</h2> Using the latest Core Data API features, how do I make a simple fetch request? The underlying question is how do I bring my NSmanagedObjectCotnext into scope. I should note that I am able to successfully make a request using the traditional syntax.

38,387,472

2

0

null

2016-07-15 02:46:39.617 UTC

4

2017-01-24 07:45:57.92 UTC

null

1,664,443

null

1

30

ios|core-data|nsfetchrequest|swift3|xcode8-beta2

15,815

Ok, I figured out two ways of doing this. The first approach, which is similar to my example code is just simply: <pre><code>var moc: NSManagedObjectContext! let request = MyEntity.fetchRequest() var results : [MyEntity] do { results = try moc.fetch(request) } catch { // error stuff} </code></pre> The second approach, which was shown in WWDC 2016 uses a function named "execute" on our fetch request object. If you view the details on NSFetchRequest you'll see a comment that clearly states that the operation must be performed with in a block. <pre><code> // Executes the fetch request using the current managed object context. This method must be called from within a block submitted to a managed object context. @available(iOS 10.0, *) public func execute() throws -> [ResultType] </code></pre> It's dawned on me that this was the way to perform the fetch: <pre><code>var moc: NSManagedObjectContext! let request = MyEntity.fetchRequest() var results : [MyEntity] moc.perform { self.results = try! request.execute() } </code></pre> For those who roll their own If you are rolling your own code you may find that your code does not compile. Included in the auto-generated code is a new method called fetchRequest that the compiler uses to pass the type along. Here's what the code looks like. <pre><code>@nonobjc public class func fetchRequest() -> NSFetchRequest<MyEntity> { return NSFetchRequest<MyEntity>(entityName: "MyEntity"); } </code></pre>

470,040

boost::bind with functions that have parameters that are references

I noticed that when passing reference parameters to boost bind, those parameters won't act like references. Instead boost creates another copy of the member and the original passed in variable remains unchanged. When I change the references to pointers, everything works ok. My question is: Is it possible to get references to work, or at least give a compiling error when it tries to use reference parameters?

470,053

2

0

null

2009-01-22 17:19:34.45 UTC

4

2014-01-13 18:18:14.433 UTC

2009-07-11 18:49:28.973 UTC

null

95,735

Brian R. Bondy

3,153

null

1

31

c++|boost-bind

23,207

The <a href="http://www.boost.org/doc/libs/1_37_0/libs/bind/bind.html#with_functions" rel="noreferrer">boost documentation for bind</a> suggests that you can use boost::ref and boost::cref for this.

2,636,068

Hide cursor in Chrome (and IE)

I have the following CSS that hides the mouse cursor for anything on the web page. It works perfectly in Firefox, but in IE and Chrome, it doesn't work. <pre><code>html { cursor: none; } </code></pre> In Chrome, I always see the mouse pointer. In IE, however, I see whatever cursor was last 'active' when it entered the screen. Presumably it's keeping the last selection instead of removing it.

2,636,106

6

7

null

2010-04-14 08:55:52.397 UTC

6

2021-12-23 15:42:47.293 UTC

null

4,294,399

null

94,278

null

1

18

html|css|mouse-cursor

38,117

This property <code>cursor:none;</code> isn't part of the standard See here <a href="http://www.w3schools.com/css/pr_class_cursor.asp" rel="noreferrer">w3c cursor CSS properties</a>. You might want to look into hiding it with Javascript or JQuery. Also, look at blank cursor files <a href="http://pc.autons.net/stuff/blanks/" rel="noreferrer">here</a>. And one last link to an <a href="http://www.ajaxblender.com/howto-create-custom-image-cursors.html" rel="noreferrer">ajax solution</a>. Chrome has had this issue since it was built, there have been reports sent to the people at <a href="http://code.google.com/chromium/" rel="noreferrer">Chromium</a>, and I assume they are working on it. Also, don't trust that anything would work in IE. Ever. :P

2,578,930

Understanding this matrix transposition function in Haskell

This matrix transposition function works, but I'm trying to understand its step by step execurtion and I don't get it. <pre><code> transpose:: [[a]]->[[a]] transpose ([]:_) = [] transpose x = (map head x) : transpose (map tail x) </code></pre> with <pre><code>transpose [[1,2,3],[4,5,6],[7,8,9]] </code></pre> it returns: <pre><code> [[1,4,7],[2,5,8],[3,6,9]] </code></pre> I don't get how the concatenation operator is working with map. It is concatenating each head of x in the same function call? How? is this <pre><code>(map head x) </code></pre> creating a list of the head elements of each list?

2,578,979

7

1

null

2010-04-05 14:40:11.077 UTC

3

2022-06-22 15:15:37.27 UTC

2011-04-18 23:31:11.383 UTC

null

83,805

null

45,963

null

1

30

algorithm|list|haskell

19,844

Let's look at what the function does for your example input: <pre><code>transpose [[1,2,3],[4,5,6],[7,8,9]] <=> (map head [[1,2,3],[4,5,6],[7,8,9]]) : (transpose (map tail [[1,2,3],[4,5,6],[7,8,9]])) <=> [1,4,7] : (transpose [[2,3],[5,6],[8,9]]) <=> [1,4,7] : (map head [[2,3],[5,6],[8,9]]) : (transpose (map tail [[2,3],[5,6],[8,9]])) <=> [1,4,7] : [2,5,8] : (transpose [[3],[6],[9]]) <=> [1,4,7] : [2,5,8] : (map head [[3],[6],[9]]) : (transpose (map tail [[3],[6],[9]])) <=> [1,4,7] : [2,5,8] : [3, 6, 9] : (transpose [[], [], []]) <=> [1,4,7] : [2,5,8] : [3, 6, 9] : [] -- because transpose ([]:_) = [] <=> [[1,4,7],[2,5,8],[3,6,9]] </code></pre> Note that the order in which I chose to reduce the terms, is not the same as the evaluation order haskell will use, but that does not change the result. Edit: In response to your edited question: <blockquote> is this <pre><code>(map head x) </code></pre> creating a list of the head elements of each list? </blockquote> Yes, it is.

2,932,421

Detect if a method was overridden using Reflection (C#)

Say I have a base class TestBase where I define a virtual method TestMe() <pre><code>class TestBase { public virtual bool TestMe() { } } </code></pre> Now I inherit this class: <pre><code>class Test1 : TestBase { public override bool TestMe() {} } </code></pre> Now, using Reflection, I need to find if the method TestMe has been overriden in child class - is it possible? What I need it for - I am writing a designer visualizer for type "object" to show the whole hierarchy of inheritance and also show which virtual methods were overridden at which level.

2,932,448

9

1

null

2010-05-28 20:47:28.133 UTC

17

2022-08-31 12:40:03.273 UTC

2013-08-24 13:13:30.44 UTC

null

126,014

null

151,200

null

1

63

c#|reflection|overriding

27,793

Given the type <code>Test1</code>, you can determine whether it has its own <strike>implementation</strike> declaration of <code>TestMe</code>: <pre><code>typeof(Test1).GetMethod("TestMe").DeclaringType == typeof(Test1) </code></pre> If the declaration came from a base type, this will evaluate false. Note that since this is testing declaration, not true implementation, this will return true if <code>Test1</code> is also abstract and <code>TestMe</code> is abstract, since <code>Test1</code> would have its own declaration. If you want to exclude that case, add <code>&& !GetMethod("TestMe").IsAbstract</code>

25,230,812

When should I use Docker's container name?

When I ran <code>docker ps -a</code>, I got <pre><code>CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES e3be2faeb751 centos:latest touch /var/log/test 2 minutes ago Exited (1) 2 minutes ago insane_kirch6 </code></pre> What is the name, insane_kirch6, for?

25,231,029

3

0

null

2014-08-10 16:42:15.02 UTC

9

2021-02-22 16:55:25.553 UTC

2019-11-17 23:05:18.83 UTC

null

63,550

null

1,254,250

null

1

72

docker

79,287

You can name your own containers with <code>--name</code> when you use <code>docker run</code>. If you do not provide a name, Docker will generate a random one like the one you have. Check their documentation for naming at <a href="https://docs.docker.com/network/links/#the-importance-of-naming" rel="noreferrer">Legacy container links, The importance of naming</a>

23,587,862

How to get all elements into list or string with Selenium using C#?

I've tried using WebElement (and IWebElement) and string lists, but I keep getting errors. How can I get a list or strings of all the elements text by classname? I have all Selenium references. Do I need some java.util dll? Should I implement a foreach loop? <pre><code>IList<IWebElement> all = new IList<IWebElement>(); all = driver.FindElements(By.ClassName("comments")).Text; </code></pre> Error: Cannot create an instance of the abstract class or interface 'System.Collections.Generic.IList' Error: 'System.Collections.ObjectModel.ReadOnlyCollection' does not contain a definition for 'Text' and no extension method 'Text' accepting a first argument of type

23,587,903

5

0

null

2014-05-11 01:00:30.437 UTC

2

2017-04-02 10:59:14.437 UTC

null

617,450

null

3,609,872

null

1

6

c#|list|selenium|selenium-webdriver

71,293

You can get all of the element text like this: <pre><code>IList<IWebElement> all = driver.FindElements(By.ClassName("comments")); String[] allText = new String[all.Count]; int i = 0; foreach (IWebElement element in all) { allText[i++] = element.Text; } </code></pre>

6,087,716

Setting CSS position using Javascript

How to set <code>relative 50% 50%</code> position using JS? I tried: <pre><code>document.getElementById("id").style.position = "relative 50% 50%"; </code></pre> but it don't seems to work...

6,087,730

2

1

null

2011-05-22 11:46:24.03 UTC

1

2015-08-27 05:55:56.823 UTC

null

746,841

null

1

10

javascript|css

48,538

You have to set them individually. I made a variable to point to the <code>style</code> object, because we are modifying more than one property and because <code>with() { ... }</code> is <a href="http://www.yuiblog.com/blog/2006/04/11/with-statement-considered-harmful/" rel="noreferrer">considered harmful</a>. Also, I set the <code>50%</code> to both properties because of right to left assignment, and because assignment of this string to the two properties isn't a problem (make sure you understand how this works, e.g. <code>var a = b = []</code> will set <code>a</code> and <code>b</code> to the same <code>Array</code> object, often not desired). <pre><code>var elementStyle = document.getElementById("id").style; elementStyle.position = "relative"; elementStyle.top = elementStyle.left = "50%"; </code></pre> <a href="http://jsfiddle.net/alexdickson/J4qEu/" rel="noreferrer">jsFiddle</a>.

5,744,694

Extract matrix column values by matrix column name

Is it possible to get a matrix column by name from a matrix? I tried various approaches such as <code>myMatrix["test", ]</code> but nothing seems to work.

5,744,722

2

0

null

2011-04-21 13:20:52.177 UTC

11

2018-06-20 11:22:28.137 UTC

null

680,068

null

356,790

null

1

53

r|matrix|subset

144,603

Yes. But place your "test" after the comma if you want the column... <pre><code>> A <- matrix(sample(1:12,12,T),ncol=4) > rownames(A) <- letters[1:3] > colnames(A) <- letters[11:14] > A[,"l"] a b c 6 10 1 </code></pre> see also <code>help(Extract)</code>

31,381,992

Java equivalent of Where Clause in C# Linq

I can do this in C# : <pre><code>int CheetahNumber = 77; Animal Cheetah = Model.Animals .Where(e => e.AnimalNo.Equals(CheetahNumber)) .FirstOrDefault(); </code></pre> For example in Java I have <code>ArrayList<Animal> Animals</code> How can I query such an ArrayList? Thanks.

31,382,223

3

2

null

2015-07-13 11:20:00.187 UTC

9

2017-09-15 00:19:22.953 UTC

null

57,611

null

1,954,132

null

1

32

java|lambda

37,519

Java 8 introduces the <a href="http://www.oracle.com/technetwork/articles/java/ma14-java-se-8-streams-2177646.html">Stream API</a> that allows similar constructs to those in Linq. Your query for example, could be expressed: <pre><code>int cheetahNumber = 77; Animal cheetah = animals.stream() .filter((animal) -> animal.getNumber() == cheetahNumber) .findFirst() .orElse(Animal.DEFAULT); </code></pre> You'll obviously need to workout if a default exists, which seems odd in this case, but I've shown it because that's what the code in your question does.

32,998,902

MSVCP140.dll missing

I just developed my first program in C++ and I wanted to share it with one of my friends. But when he tries to open the exe it gets an error which says "MSVCP140.dll is missing". Why is this issue happening and how can we fix it?

32,999,084

4

0

null

2015-10-07 17:37:48.367 UTC

23

2022-08-26 14:58:20.483 UTC

null

5,323,015

null

5,323,015

null

1

67

c++|windows|visual-studio-2015

195,275

Either make your friends download the runtime DLL (@Kay's answer), or compile the app with static linking. In visual studio, go to <code>Project tab -> properties - > configuration properties -> C/C++ -> Code Generation</code> on runtime library choose <code>/MTd</code> for debug mode and <code>/MT</code> for release mode. This will cause the compiler to embed the runtime into the app. The executable will be significantly bigger, but it will run without any need of runtime dlls.

21,634,088

Execute "ffmpeg" command in a loop

I have three <code>.wav</code> files in my folder and I want to convert them into <code>.mp3</code> with ffmpeg. I wrote this bash script, but when I execute it, only the first one is converted to mp3. What should I do to make script keep going through my files? This is the script: <pre><code>#!/bin/bash find . -name '*.wav' | while read f; do ffmpeg -i "$f" -ab 320k -ac 2 "${f%.*}.mp3" done </code></pre>

21,634,265

3

0

null

2014-02-07 17:28:03.567 UTC

8

2021-01-07 17:33:51.363 UTC

null

10,248,678

null

1,891,264

null

1

26

bash|ffmpeg

26,286

No reason for <a href="/questions/tagged/find" class="post-tag" title="show questions tagged 'find'" rel="tag">find</a>, just use <a href="/questions/tagged/bash" class="post-tag" title="show questions tagged 'bash'" rel="tag">bash</a> wildcard globbing <pre><code>#!/bin/bash for name in *.wav; do ffmpeg -i "$name" -ab 320k -ac 2 "${name%.*}.mp3" done </code></pre>

21,786,184

Setting up a 2D view in Three.js

I'm new to <code>three.js</code> and am trying to set up what amounts to a 2D visualization (for an assortment of layered sprites) using these 3D tools. I'd like some guidance on the <code>PerspectiveCamera()</code> arguments and <code>camera.position.set()</code> arguments. I already have a nudge in the right direction from <a href="https://stackoverflow.com/a/11469614/2441384">this answer</a> to a <a href="https://stackoverflow.com/questions/11456758/is-there-at-two-js-counterpart-to-three-js/16071265#16071265">related question</a>, which said to set the <code>z</code> coordinate equal to <code>0</code> in <code>camera.position.set(x,y,z)</code>. Below is the snippet of code I'm modifying from one of <a href="https://github.com/stemkoski/stemkoski.github.com" rel="noreferrer">stemkoski's three.js examples</a>. The parts that are hanging me up for the moment are the values for the <code>VIEW_ANGLE</code>, <code>x</code>, and <code>y</code>. Assuming I want to have a flat camera view on a plane the size of the screen how should I assign these variables? I've tried range of values but it's hard to tell from the visualization what is happening. Thanks in advance! <pre><code>var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight; var VIEW_ANGLE = ?, ASPECT = SCREEN_WIDTH / SCREEN_HEIGHT, NEAR = 0.1, FAR = 20000; camera = new THREE.PerspectiveCamera( VIEW_ANGLE, ASPECT, NEAR, FAR); scene.add(camera); var x = ?, y = ?, z = 0; camera.position.set(x,y,z); camera.lookAt(scene.position); </code></pre> UPDATE - perspective vs orthographic camera: Thanks @GuyGood, I realize I need to make a design choice about the perspective camera versus the orthographic camera. I now see that the <code>PerspectiveCamera()</code>, even in this 2D context would allow for things like <a href="https://stackoverflow.com/a/14823021/2441384">parallax</a>, whereas <code>OrthographicCamera()</code> would allow for literal rendering of sizes (no diminishing with distance) no matter what layer my 2D element is on. I'm inclined to think I'll still use the <code>PerspectiveCamera()</code> for effects such as small amounts of parallax between the sprite layers (so I guess my project is not purely 2D!). It seems then that the main thing is to make all the sprite layers parallel to the viewing plane and that <code>camera.position.set()</code> is the orthogonal viewing line to the center of the field of view.This must be basic for so many folks here; it is such a new world to me! I think I still have a hard time wrapping my head around the role of <code>VIEW_ANGLE</code>, <code>x</code>, and <code>y</code> and the distance between the camera and the far and near viewing planes in a 2D visualization. With the orthographic camera this is pretty immaterial - you just need enough depth to include all the layers you want and a viewing plane that suits the scale of your sprites. However, with the perspective camera the role of depth and field influences the effect of parallax, but are there other considerations as well? UPDATE 2 - Angle of view and other variables: After a bit more tooling around in pursuit of how to think about Angle of View (Field of View, or FOV) for the camera and the x,y,z arguments for the camera position, I came across this helpful <a href="http://www.youtube.com/watch?v=blZUao2jTGA" rel="noreferrer">video summary of the role of Field of View in game design</a> (a close enough analog to answer my questions for my 2D visualization). Along with this <a href="http://www.youtube.com/watch?v=eCa1dfl5o7k" rel="noreferrer">Field of View tutorial for photographers</a> that I also found helpful (if maybe a touch cheesy ;), these two resources helped me get a sense of how to choose a Field of View for my project and what happens with either very wide or narrow Fields of View (which are measured in number of degrees out of 360). The best results are a mix of what feels like a natural field of vision for a human, depending on the distance of the screen or projection from their face, and is also keenly related to the relative scale of things in the foreground versus background in the visualization (wider fields of view make the background look smaller, narrower fields of view magnify the background - similar to, though not as pronounced as the effect of an orthographic camera). I hope you find this as helpful as I did! UPDATE 3 - Further reading For anyone zesting for more detail about camera specifications in a range of uses, you may find chapter 13 of <a href="https://rads.stackoverflow.com/amzn/click/com/0321399528" rel="noreferrer" rel="nofollow noreferrer">Computer Graphics Principles and Practice</a> as useful as I have for addressing my above questions and much more. UPDATE 4 - Considerations for the z dimension in the Orthographic camera As I've continued my project I decided to use the orthographic camera so that I could increment the z dimensions of my sprites in order to avoid <a href="https://en.wikipedia.org/wiki/Z-fighting" rel="noreferrer">z-fighting</a>, yet not have them appear to recede progressively into the distance. By contrast, if I want to make it appear as though a sprite is receding into the distance, I can simply adjust its size. However, today I ran across a silly mistake that I wanted to point out to save others from the same trouble. Although the orthographic camera does not depict receding size as objects are more distant, take care that there is still a <a href="https://www.ntu.edu.sg/home/ehchua/programming/opengl/images/Graphics3D_Orthographic.png" rel="noreferrer">back frustrum plane</a> past which objects will be culled from view. Today I accidentally incremented the z values of several of my objects past that plane and could not figure out why they were not showing up on screen. It can be easy to forget this factor about the z coordinate while working with the orthographic camera.

21,787,531

1

0

null

2014-02-14 17:51:36.617 UTC

9

2020-01-21 07:14:29.717 UTC

2018-10-18 13:25:11.6 UTC

null

2,441,384

null

2,441,384

null

1

18

javascript|graphics|three.js|2d|perspectivecamera

19,433

What is your goal? If you do not need perspective distortion, use the orthographic camera. Also just check the documentation: <a href="https://threejs.org/docs/#api/en/cameras/PerspectiveCamera" rel="nofollow noreferrer">https://threejs.org/docs/#api/en/cameras/PerspectiveCamera</a> View Angle/Fieldof View is self explanatory, if you don't know what it is, read up on it. <a href="http://www.incgamers.com/wp-content/uploads/2013/05/6a0120a85dcdae970b0120a86d9495970b.png" rel="nofollow noreferrer">http://www.incgamers.com/wp-content/uploads/2013/05/6a0120a85dcdae970b0120a86d9495970b.png</a> Concerning the x y and z value. Well, this depends on the size of your plane and the distance to the camera. You can either set the camera position or the plane's position and keep the camera at (0,0,0). Just imagine a plane in 3D space. You can calculate the position of the camera depending on the size of your plane or just go by try and error... For using the orthographic camera, see this post: <a href="https://stackoverflow.com/questions/17558085/three-js-orthographic-camera">Three.js - Orthographic camera</a>

35,361,467

TensorFlow: numpy.repeat() alternative

I want to compare the predicted values <code>yp</code> from my neural network in a pairwise fashion, and so I was using (back in my old numpy implementation): <pre><code>idx = np.repeat(np.arange(len(yp)), len(yp)) jdx = np.tile(np.arange(len(yp)), len(yp)) s = yp[[idx]] - yp[[jdx]] </code></pre> This basically create a indexing mesh which I then use. <code>idx=[0,0,0,1,1,1,...]</code> while <code>jdx=[0,1,2,0,1,2...]</code>. I do not know if there is a simpler manner of doing it... Anyhow, TensorFlow has a <code>tf.tile()</code>, but it seems to be lacking a <code>tf.repeat()</code>. <pre><code>idx = np.repeat(np.arange(n), n) v2 = v[idx] </code></pre> And I get the error: <pre><code>TypeError: Bad slice index [ 0 0 0 ..., 215 215 215] of type <type 'numpy.ndarray'> </code></pre> It also does not work to use a TensorFlow constant for the indexing: <pre><code>idx = tf.constant(np.repeat(np.arange(n), n)) v2 = v[idx] </code></pre> - <pre><code>TypeError: Bad slice index Tensor("Const:0", shape=TensorShape([Dimension(46656)]), dtype=int64) of type <class 'tensorflow.python.framework.ops.Tensor'> </code></pre> The idea is to convert my <a href="http://research.microsoft.com/en-us/um/people/cburges/papers/ICML_ranking.pdf" rel="noreferrer">RankNet</a> implementation to TensorFlow.

35,367,161

10

0

null

2016-02-12 11:28:07.753 UTC

9

2021-12-09 09:06:52.187 UTC

2016-02-12 17:06:42.05 UTC

null

2,680,707

null

2,680,707

null

1

44

tensorflow

37,284

You can achieve the effect of <code>np.repeat()</code> using a combination of <a href="https://www.tensorflow.org/versions/r1.2/api_docs/python/tf/tile" rel="noreferrer"><code>tf.tile()</code></a> and <a href="https://www.tensorflow.org/versions/r1.2/api_docs/python/tf/reshape" rel="noreferrer"><code>tf.reshape()</code></a>: <pre><code>idx = tf.range(len(yp)) idx = tf.reshape(idx, [-1, 1]) # Convert to a len(yp) x 1 matrix. idx = tf.tile(idx, [1, len(yp)]) # Create multiple columns. idx = tf.reshape(idx, [-1]) # Convert back to a vector. </code></pre> You can simply compute <code>jdx</code> using <code>tf.tile()</code>: <pre><code>jdx = tf.range(len(yp)) jdx = tf.tile(jdx, [len(yp)]) </code></pre> For the indexing, you could try using <a href="https://www.tensorflow.org/versions/r1.2/api_docs/python/tf/gather" rel="noreferrer"><code>tf.gather()</code></a> to extract non-contiguous slices from the <code>yp</code> tensor: <pre><code>s = tf.gather(yp, idx) - tf.gather(yp, jdx) </code></pre>

25,553,711

Disable magnification gesture in WKWebView

I'm looking for a way to disable the "pinch to zoom" magnification gesture on the iOS implementation of WKWebView. There is a magnification BOOL property available for OS X but it doesn't seem to be available on iOS. WKWebView.h <pre><code>#if !TARGET_OS_IPHONE /* @abstract A Boolean value indicating whether magnify gestures will change the web view's magnification. @discussion It is possible to set the magnification property even if allowsMagnification is set to NO. The default value is NO. */ @property (nonatomic) BOOL allowsMagnification; </code></pre> I've, also, tried look at the WKWebView's gesture recognizers but that seems to be turning up an empty array. I'm assuming the actual recognizers are bured deeper in the component's structure (fairly complex, by the looks of it) and would rather not go digging for them if at all possible. I know of possible hacks that could potentially disable the gesture from firing (selectively passing gestures to the WebView, add child view to capture pinch gesture, etc) but I've always found those introduce lag into the event and want to keep the implementation as clean/hack free as possible.

31,943,976

21

0

null

2014-08-28 16:31:14.533 UTC

17

2021-09-07 12:35:48.06 UTC

null

397,453

null

1

62

ios|webkit|ios8|wkwebview

52,699

You can prevent your users from zooming by setting the delegate of your WKWebKit's UIScrollView and implementing <code>viewForZooming(in:)</code> as in the following: <pre><code>class MyClass { let webView = WKWebView() init() { super.init() webView.scrollView.delegate = self } deinit() { // Without this, it'll crash when your MyClass instance is deinit'd webView.scrollView.delegate = nil } } extension MyClass: UIScrollViewDelegate { func viewForZooming(in scrollView: UIScrollView) -> UIView? { return nil } } </code></pre>

8,450,817

Increase size of list-style-bullet type

Is there a way to increase the size of just the bullet list-style-type using CSS? I don't want to increase the size of the bullet text, just the bullet type. I can't use images or JavaScript either. It has to be something I can embed inside <code><style></code> tags within the <code><head></code> tag.

8,450,930

7

0

null

2011-12-09 19:40:51.813 UTC

2

2022-05-19 22:38:41.883 UTC

2015-12-11 16:55:05.167 UTC

null

2,301,450

null

773,202

null

1

27

css|html-lists

69,623

Might not work in old version of IE. <code>li:before{ content:'\00b7'; font-size:100px; }</code> <a href="http://jsfiddle.net/GuzCm/1/">Demo</a> For IE6: Without javascript or images, I would recommend putting a <code>&#183;</code> in the beginning of every list item and styling that.

30,669,015

autoscroll of text and scrollbar in python text box

I have a tkinter 'Text' and 'Scrollbar' working fine. In my program in the text window automatically lines will keep on adding. So When a new line of text is inserted and data reached out of limit I would like the text and scrollbar to be scrolled to the bottom automatically, so that the latest line of text is always shown. How to do this? Also how to link the scroll of text window and scroll bar, because when I do scrolling over the text window scroll wont happen. Only way I observed is to drag the scroll bar. <pre><code> scrollbar = Tkinter.Scrollbar(group4.interior()) scrollbar.pack(side = 'right',fill='y') Details1 = Output() outputwindow = Tkinter.Text(group4.interior(), yscrollcommand = scrollbar.set,wrap = "word",width = 200,font = "{Times new Roman} 9") outputwindow.pack( side = 'left',fill='y') scrollbar.config( command = outputwindow.yview ) outputwindow.yview('end') outputwindow.config(yscrollcommand=scrollbar.set) outputwindow.insert('end',Details1) </code></pre> In the program the function output() will continuously send data, which should scroll Thanks in advance,

30,671,211

3

0

null

2015-06-05 14:24:38.653 UTC

4

2021-10-13 17:15:42.42 UTC

null

4,946,244

null

1

19

python|tkinter

46,820

You can cause the text widget to scroll to any location with the <code>see</code> which takes an index. For example, to make the last line of the widget visible you can use the index <code>"end"</code>: <pre><code>outputwindow.see("end") </code></pre> Here's a complete working example: <pre><code>import time try: # python 2.x import Tkinter as tk except ImportError: # python 3.x import tkinter as tk class Example(tk.Frame): def __init__(self, *args, **kwargs): tk.Frame.__init__(self, *args, **kwargs) self.text = tk.Text(self, height=6, width=40) self.vsb = tk.Scrollbar(self, orient="vertical", command=self.text.yview) self.text.configure(yscrollcommand=self.vsb.set) self.vsb.pack(side="right", fill="y") self.text.pack(side="left", fill="both", expand=True) self.add_timestamp() def add_timestamp(self): self.text.insert("end", time.ctime() + "\n") self.text.see("end") self.after(1000, self.add_timestamp) if __name__ == "__main__": root =tk.Tk() frame = Example(root) frame.pack(fill="both", expand=True) root.mainloop() </code></pre>

43,681,644

Is there a way to stop/disable a Google Cloud Function?

I have running multiple Google Cloud functions. One is not operating well, so I want to stop them until I've fixed the situation. I have seen that I can remove the function, but is there a way to disable and later; enable the function?

43,684,556

7

1

null

2017-04-28 13:39:45.64 UTC

3

2021-03-28 17:01:30.713 UTC

null

7,328,924

null

1

31

google-cloud-functions

17,727

You cannot disable a function. Just comment the function body. It would be a good practice to log the call in the console and then return null so you can keep track whenever the function is invoked.

1,217,772

C# Put string into TextBox

I want to show the results of this code in my TextBox: <pre><code> string txtout1 = txtOrgText.Text.Replace(parm, txtTo.Text).ToString(); txtout = txtout1; </code></pre> I have a textbox, <code>txtOrgtext</code>, into which the user inputs text. I want to put some text into txtout now. I have set txtout to ReadOnly and MultiLine. When I try running my program, I get the following error: <pre><code>Error 1 Cannot implicitly convert type 'string' to 'System.Windows.Forms.TextBox' C:\Users\xxx\AppData\Local\Temporary Projects\WindowsFormsApplication1\Form1.cs 45 25 WindowsFormsApplication1 </code></pre> I tried <code>txtout1.ToString()</code>, but nothing changes. I also tried <code>txtout.Text = txtout1</code> and get this error : <pre><code>Cross-thread operation not valid: Control 'txtout' accessed from a thread other than the thread it was created on. </code></pre> I got an error because I used Threading, without Threading it works fine.

1,217,774

3

2

null

2009-08-01 23:29:52.56 UTC

1

2018-09-12 12:01:41.027 UTC

2017-04-29 15:43:01.273 UTC

null

543,538

null

149,130

null

1

7

c#

94,612

What you need to do is: <pre><code> txtout.Text = txtout1; </code></pre> This is because <code>txtout1</code> is just a string of characters, while <code>txtout</code> is a full TextBox, with all the drawing and colouring and stuff like that. I see that you were on the right lines with your first line of code - txtOrgText.Text - the <code>.Text</code> is used both ways - for reading and writing. (Or "looking" and "changing" is another way of putting it.) You do this with a lot of other controls - a ComboBox, a Form (to set the caption), a DomainUpDown (the thing with the arrows on the right) to name a few. The reason that "ToString()" doesn't work is that ToString() is making your string of text into a string of text! It doesn't turn it into a TextBox for you.

132,940

Why does Castle Windsor hold onto transient objects?

Recently I noticed my application appears to be eating memory that never gets released. After profiling with CLRProfiler I've found that the Castle Windsor container I'm using is holding onto objects. These objects are declared with the lifestyle="transient" attribute in the config xml. I've found if I put an explicit call to <code>IWindsorContainer.Release(hangingObject)</code>, that it will drop its references. This is causing a problem though, I wasn't expecting that with a transient lifestyle object CastleWindsor would keep a reference and effectively create a leak. It's going to be a rather mundane and error prone task going around inserting explicit Release calls in all the appropriate places. Have you seen this problem, and do you have any suggestions for how to get around it?

166,523

3

0

null

2008-09-25 12:16:08.73 UTC

8

2015-09-11 07:34:01.227 UTC

2015-09-11 07:32:34.89 UTC

null

542,251

Scott Langham

11,898

null

1

30

c#|castle-windsor

7,038

I think the answers here are missing a vital point - that this behavior is configurable out of the box via release policies - check out the documentation on the castle project site <a href="http://www.castleproject.org/container/documentation/trunk/advanced/releasepolicy.html" rel="nofollow noreferrer">here</a>. In many scenarios especially where your container exists for the lifetime of the hosting application, and where transient components really don't need to be tracked (because you're handling disposal in your calling code or component that's been injected with the service) then you can just set the release policy to the <code>NoTrackingReleasePolicy</code> implementation and be done with it. Prior to Castle v 1.0 I believe Component Burden will be implemented/introduced - which will help alleviate some of these issues as well around disposal of injected dependencies etc. Edit: Check out the following posts for more discussion of component burden. <a href="http://elegantcode.com/2008/12/14/the-component-burden/" rel="nofollow noreferrer">The Component Burden - Davy Brions</a> Also component burden is implemented in the <a href="http://ayende.com/Blog/archive/2009/05/05/castle-windsor-2.0-rtm-released.aspx" rel="nofollow noreferrer">official 2.0 release</a> of the Windsor Container.

181,693

What are the complexity guarantees of the standard containers?

Apparently ;-) the standard containers provide some form of guarantees. What type of guarantees and what exactly are the differences between the different types of container? Working from <a href="http://www.sgi.com/tech/stl/" rel="noreferrer">the SGI page</a> (about <a href="http://en.wikipedia.org/wiki/Standard_Template_Library" rel="noreferrer">STL</a>) I have come up with this: <pre><code>Container Types: ================ Container: Forward Container Reverse Container Random Access Container Sequence Front Insert Sequence Back Insert Sequence Associative Container Simple Associative Container Pair Associative Container Sorted Associative Container Multiple Associative Container Container Types mapped to Standard Containers ============================================= std::vector: Sequence Back Sequence Forward/Reverse/Random Container std::deque: Sequence Front/Back Sequence Forward/Reverse/Random Container std::list: Sequence Front/Back Sequence Forward/Reverse Container std::set: Sorted/Simple/Unique Associative Container Forward Container std::map: Sorted/Pair/Unique Associative Container Forward Container std::multiset: Sorted/Simple/Multiple Associative Container Forward Container std::multimap: Sorted/Pair/Multiple Associative Container Forward Container Container Guarantees: ===================== Simp or For Rev Rand Front Back Assoc Sort Mult Cont: Cont: Cont Cont: Sequ: Sequ: Sequ: Cont: Cont: Cont: Copy Const: O(n) Fill Const: O(n) begin() O(1) end() O(1) rbegin() O(1) rend() O(1) front() O(1) push_front() O(1) pop_front() O(1) push_back() O(1) pop_back() O(1) Insert() O(ln(n)) Insert: fill O(n) Insert: range O(n) O(kln(n)+n) size() O(1) swap() O(1) erase key O(ln(n)) erase element O(1) erase range O(ln(n)+S) count() O(log(n)+k) find() O(ln(n)) equal range O(ln(n)) Lower Bound/Upper Bound O(ln(n)) Equality O(n) InEquality O(n) Element Access O(1) </code></pre>

26,395,804

3

10

null

2008-10-08 07:35:11.323 UTC

168

2021-11-09 17:15:45.417 UTC

Martin York

14,065

Martin York

14,065

null

1

178

c++|stl|containers|big-o

144,800

I found the nice resource <a href="http://www.cs.northwestern.edu/~riesbeck/programming/c++/stl-summary.html" rel="noreferrer">Standard C++ Containers</a>. Probably this is what you all looking for. VECTOR Constructors <pre><code>vector<T> v; Make an empty vector. O(1) vector<T> v(n); Make a vector with N elements. O(n) vector<T> v(n, value); Make a vector with N elements, initialized to value. O(n) vector<T> v(begin, end); Make a vector and copy the elements from begin to end. O(n) </code></pre> Accessors <pre><code>v[i] Return (or set) the I'th element. O(1) v.at(i) Return (or set) the I'th element, with bounds checking. O(1) v.size() Return current number of elements. O(1) v.empty() Return true if vector is empty. O(1) v.begin() Return random access iterator to start. O(1) v.end() Return random access iterator to end. O(1) v.front() Return the first element. O(1) v.back() Return the last element. O(1) v.capacity() Return maximum number of elements. O(1) </code></pre> Modifiers <pre><code>v.push_back(value) Add value to end. O(1) (amortized) v.insert(iterator, value) Insert value at the position indexed by iterator. O(n) v.pop_back() Remove value from end. O(1) v.assign(begin, end) Clear the container and copy in the elements from begin to end. O(n) v.erase(iterator) Erase value indexed by iterator. O(n) v.erase(begin, end) Erase the elements from begin to end. O(n) </code></pre> For other containers, refer to the page.

28,845,058

constexpr const vs constexpr variables?

It seems obvious that constexpr implies const and thus it is common to see: <pre><code>constexpr int foo = 42; // no const here </code></pre> However if you write: <pre><code>constexpr char *const str = "foo"; </code></pre> Then GCC will spawn "warning: deprecated conversion from string constant to ‘char*’" if -Wwrite-string flag is passed. Writing: <pre><code>constexpr const char *const str = "foo"; </code></pre> solves the issue. So are constexpr const and constexpr really the same?

28,845,237

3

2

null

2015-03-04 01:13:55.137 UTC

16

2020-02-27 19:47:23.557 UTC

null

1,410,669

null

1,442,517

null

1

65

c++|c++11|constants|constexpr

24,926

The issue is that in a variable declaration, <code>constexpr</code> always applies the <code>const</code>-ness to the object declared; <code>const</code> on the other hand can apply to a different type, depending on the placement. Thus <pre><code>constexpr const int i = 3; constexpr int i = 3; </code></pre> are equivalent; <pre><code>constexpr char* p = nullptr; constexpr char* const p = nullptr; </code></pre> are equivalent; both make <code>p</code> a <code>const</code> pointer to <code>char</code>. <pre><code>constexpr const char* p = nullptr; constexpr const char* const p = nullptr; </code></pre> are equivalent. <code>constexpr</code> makes <code>p</code> a <code>const</code> pointer. The <code>const</code> in <code>const char *</code> makes <code>p</code> point to <code>const char</code>.

20,606,432

Number validate at keypress

I validate the phone number using below code its working fine but i allow char at first time while user entering the values. how i can solve it. . . . <pre><code>$('.Number').keypress(function () { $('.Number').keypress(function (event) { var keycode; keycode = event.keyCode ? event.keyCode : event.which; if (!(event.shiftKey == false && (keycode == 46 || keycode == 8 || keycode == 37 ||keycode == 39 || (keycode >= 48 && keycode <= 57)))) { event.preventDefault(); } }); }); </code></pre>

20,606,478

5

0

null

2013-12-16 08:34:40.347 UTC

1

2019-02-04 11:02:01.03 UTC

2013-12-16 08:38:48.543 UTC

null

2,074,608

null

2,830,895

null

1

5

javascript|jquery|asp.net-mvc|jquery-ui

42,132

The first character is unrestricted because you have nested <code>keypress</code> handlers. Try this: <pre><code>$('.Number').keypress(function (event) { var keycode = event.which; if (!(event.shiftKey == false && (keycode == 46 || keycode == 8 || keycode == 37 || keycode == 39 || (keycode >= 48 && keycode <= 57)))) { event.preventDefault(); } }); </code></pre>

24,320,237

change the text of the button on click using angular JS

How I can change the text of the button on click of the button. Here it is what I have tried. HTML: <pre><code><button ng-click="toggle = !toggle">Toggle!</button> <div class="box on" ng-show="toggle" ng-animate="'box'">On</div> </code></pre> JS: <pre><code>function MainController($scope) { $scope.toggle = true; } </code></pre>

24,320,257

4

0

null

2014-06-20 04:59:43 UTC

3

2016-10-24 21:54:44.843 UTC

2014-06-20 05:05:52.643 UTC

null

3,563,847

null

1,853,128

null

1

18

javascript|jquery|angularjs

49,793

I think, using a watch of <code>toggle</code> should do it <pre><code><button ng-click="toggle = !toggle">{{toggleText}}</button> <div class="box on" ng-show="toggle" ng-animate="'box'">On</div> </code></pre> then <pre><code>app.controller('AppController', function ($scope) { $scope.toggle = true; $scope.$watch('toggle', function(){ $scope.toggleText = $scope.toggle ? 'Toggle!' : 'some text'; }) }) </code></pre> Demo: <a href="http://jsfiddle.net/arunpjohny/Ljrpd/" rel="noreferrer">Fiddle</a>

65,553,800

Why does an optional in fast enumeration cause an infinite loop?

Evaluating the following code, I would expect a single printing of <code>Hello World</code>. Instead, it causes an infinite loop. Can someone explain why? <pre><code>let array = ["what"] for text: String? in array { print("Hello World") } </code></pre> (Removing the optional <code>?</code> obviously makes it print only once)

65,554,547

2

1

null

2021-01-03 19:07:55.413 UTC

3

2021-02-01 12:05:17.003 UTC

2021-01-03 20:28:04.387 UTC

null

14,531,220

null

3,749,617

null

1

30

swift

464

This is an unexpected result, but it is happening because of the way Swift <code>for in</code> loops work under the hood. <code>for in</code> takes a variable and a <code>Sequence</code>. Swift calls <code>makeIterator()</code> on the <code>Sequence</code> to get an <code>IteratorProtocol</code> which returns successive items when <code>next()</code> is called on the iterator. <code>next()</code> returns an Optional so that it can return <code>nil</code> when all of the items have been exhausted. In a normal case, you receive the non-optional values and Swift continues giving them out until <code>nil</code> is received in which case the loop ends. This is the equivalent of your code when you don't use an optional: <pre><code>let array = ["what"] var iter = array.makeIterator() while let text = iter.next() { print("Hello World") } </code></pre> The optional binding (<code>while let</code>) fails when <code>iter.next()</code> returns <code>nil</code> and the loop ends. In your case, you have said that you will explicitly receive <code>nil</code> values (by declaring your loop variable as an optional), so when <code>next()</code> is called on the iterator and it is out of values, it hands you a <code>nil</code> which you graciously receive and the loop continues. The iterator continues to hand out <code>nil</code> and you continue to take them, and you have an infinite loop. This is the equivalent of your code when you use an optional: <pre><code>let array = ["what"] var iter = array.makeIterator() while let text: String? = iter.next() { print("Hello World") } </code></pre> In this case, the optional binding always works because <code>text</code> can receive the <code>nil</code>. <a href="https://swiftrocks.com/swift-sequence-inside-the-compiler-how-for-loops-work" rel="noreferrer">This blog</a> gives a nice detailed explanation of what is happening under the hood with Swift <code>for in</code> loops.

5,765,962

How to execute a update statement using Oracle ODP.Net in C#

I am using <code>Oracle.DataAccess.Client</code> to work with Oracle database in my ASP.Net application. There is no help documentation in MSDN for ODP.Net and Oracle's documentation is really really bad. I am not able find the answer to this simple question. Is it not possible to execute a simple update statement without having to build a <code>dataset</code> object and updating the <code>dataset</code>? How to execute an update statement using Oracle ODP.Net in C#?

5,766,007

3

1

null

2011-04-23 18:09:03.29 UTC

2

2017-08-30 13:29:40.09 UTC

null

7,920,473

null

399,186

null

1

9

c#|asp.net|odp.net

51,833

I will need to check the exact syntax, but here is some quick code off the top of my head <pre><code>using (OracleConnection con = new OracleConnection(...)) { con.Open(); OracleCommand cmd = con.CreateCommand(); cmd.CommandType = CommandType.Text; cmd.CommandText = "update table set col1 = :param1, col2 = :param2 where key = :keyValue"; cmd.Parameters.AddWithValue("param1", 1); cmd.Parameters.AddWithValue("param2", "Text data"); cmd.Parameters.AddWithValue("keyValue", "1"); cmd.ExecuteNonQuery(); } </code></pre> The above creates a command object sets the command up to execute an SQL Update statement, in this example I show one way to setup a parameterized query, you should always go with a parameterized query. Once the command is setup you just call <code>ExecuteNonQuery</code> to actually execute the command.

5,642,021

Batch process all files in directory

Right now i have a batch job I wrote that calls another file and passes in the variables that executable needs to run (password and filename). Ex: <pre><code>> cd f:\test\utils > admin import-xml -Dimport.file=f:\DB\file1.xml -Dadmin.db.password=test123 </code></pre> I wrote a job that does this, but found out that there would be multiple files. The username and password never change but the filename differs for like 15 different xml files--with maybe more coming soon. The files will always be located in the same folder. Instead of ending up with like 15-20 jobs (one for each file), can I write something that will process each file located in this directory. And either wait till one is completed before the next or I can add a 3 min sleep before it starts the next file.

5,644,619

3

0

null

2011-04-12 21:48:01.993 UTC

5

2013-03-14 06:42:57.483 UTC

null

697,671

null

1

10

windows|batch-file|cmd

50,084

<pre><code>pushd C:\test\utils for %%F in (F:\DB\*.xml) do ( admin import-xml "-Dimport.file=%%~dpnxF" -Dadmin.db.password=test123 ) popd </code></pre> The <code>%%~dpnxF</code> expands to d‎rive, p‎ath, base‎n‎ame and e‎x‎tension of the current file. If you intend to set and use environment variables (<code>%foo%</code>) in that loop, read <code>help set</code> first before you get into trouble.

5,746,319

Get cell contents of a selected row in a DataGridView

I have a <code>DataGridView</code> populated from a database. I am trying to get the contents of the row that is selected on the <code>RowEnter</code> event. I have set the grid's selection mode to <code>FullRowSelect</code> I have tried the following: <pre><code>int orderId = (int)dgUnprocessedCards.Rows[dgUnprocessedCards.SelectedCells[0].RowIndex].Cells[0].Value; </code></pre> this keep throwing the error <blockquote> Index was out of range. Must be non-negative and less than the size of the collection. </blockquote> Any help is appreciated.

5,746,524

4

0

null

2011-04-21 15:31:22.843 UTC

1

2021-12-12 11:28:41.607 UTC

2011-06-21 15:02:13.383 UTC

null

556,595

null

705,803

null

1

8

c#|winforms|datagridview

62,222

I've just tried this in a sample datagridview app and it works just fine so there must be something going on which you haven't told us about. First thing to do is break your one big statement up into discrete smaller statements so you can see exactly where the failure is. You can rewrite the code above to something like this for debugging purposes: <pre><code>var cellindex = dgUnprocessedCards.SelectedCells[0].RowIndex; var cellcollection = dgUnprocessedCards.Rows[cellindex].Cells[0]; int orderId = (int)dgUnprocessedCards.Value; </code></pre> Also, you should be able to do the following to achieve what you want: <pre><code>int orderId = (int)dataGridView1.SelectedRows[0].Cells[0].Value; </code></pre> That uses the SelectedRows collection which is a little bit more concise and I'd say the more usual way of accessing selected items from the datagridview. Finally, you probably want to do checking around your cast of the value, since the Value might not necessarily be an int. Something like: <pre><code>int orderid; if (!int.TryParse(cellcollection.Value.ToString(), out orderid)) { // Some logic to deal with the fact that Value was not an int } </code></pre> <hr> When is the SelectionChanged event raised? Now - as you mention, your selection changed event fires while loading data into the grid. This doesn't seem to cause a problem in my test version but could be part of your issue. Why this happens should not be related to the type of data source you are using, but to when you attach the selection changed eventhandler. This is because databinding causes a selection changed event to be raised. If you add an eventhandler for the DataBindingComplete event and attach your SelectionChanged or RowEnter eventhandlers there, you should not see the handler invoked during databinding. <pre><code>void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e) { this.dataGridView1.RowEnter += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_RowEnter); this.dataGridView1.SelectionChanged += new System.EventHandler(this.dataGridView1_SelectionChanged); } </code></pre> Note that you will need to delete the designer generated event attachment and reference the designer generated methods for this to work.

6,012,019

How to echo a custom object in PHP?

Given a particular class, <code>TheClass</code>, with an instance foo, is there any way to have PHP <code>echo foo;</code> in a customized manner? <pre><code>class TheClass { public $Name; public $Number; function MrFunction() { /* bla bla bla */ } } $foo = new TheClass(); echo $foo; </code></pre> As I understand, you cannot overload <code>echo</code> and I realize I could easily have <code>$foo->MrFunction()</code> do the work. However I am wondering if there is a way to code in which <code>echo $foo</code> prints out <code>$foo->Name</code> and <code>$foo->Number</code>. We're using PHP Version 5.2.6 but upgrading is not an issue.

6,012,035

4

3

null

2011-05-15 23:42:12.523 UTC

4

2021-12-25 03:10:25.493 UTC

user1228

578,023

null

578,023

null

1

24

php|class|object|echo

58,025

<pre><code>class TheClass { public $Name; public $Number; function MrFunction() { /* bla bla bla */ } public function __toString() { return $this->Name . ' '. $this->Number; } } echo $theClassInstance; </code></pre>

5,855,985

sass :first-child not working

I have not been using SASS for a very long time and wanted to know if there are some issues with pseudo-elements such as <code>:first-child</code> or <code>:last-child</code> ?

6,061,731

4

1

null

2011-05-02 10:19:47.973 UTC

2

2022-01-20 17:17:49.157 UTC

null

348,869

null

1

41

css|sass|pseudo-element

177,349

While @Andre is correct that there are issues with pseudo elements and their support, especially in older (IE) browsers, that support is improving all the time. As for your question of, are there any issues, I'd say I've not really seen any, although the syntax for the pseudo-element can be a bit tricky, especially when first sussing it out. So: <pre><code>div#top-level declarations: ... div.inside declarations: ... &:first-child declarations: ... </code></pre> which compiles as one would expect: <pre><code>div#top-level{ declarations... } div#top-level div.inside { declarations... } div#top-level div.inside:first-child { declarations... } </code></pre> I haven't seen any documentation on any of this, save for the statement that "sass can do everything that css can do." As always, with Haml and SASS the indentation is everything.

6,223,355

Static variables in member functions

Can someone please explain how static variables in member functions work in C++. Given the following class: <pre><code>class A { void foo() { static int i; i++; } } </code></pre> If I declare multiple instances of <code>A</code>, does calling <code>foo()</code> on one instance increment the static variable <code>i</code> on all instances? Or only the one it was called on? I assumed that each instance would have its own copy of <code>i</code>, but stepping through some code I have seems to indicate otherwise.

6,223,371

4

0

null

2011-06-03 05:33:53.487 UTC

57

2020-06-26 14:25:53.79 UTC

2018-05-05 12:09:30.207 UTC

null

873,025

null

2,499,176

null

1

196

c++|static|scope

105,229

Since <code>class A</code> is a non-template class and <code>A::foo()</code> is a non-template function. There will be only one copy of <code>static int i</code> inside the program. Any instance of <code>A</code> object will affect the same <code>i</code> and lifetime of <code>i</code> will remain through out the program. To add an example: <pre><code>A o1, o2, o3; o1.foo(); // i = 1 o2.foo(); // i = 2 o3.foo(); // i = 3 o1.foo(); // i = 4 </code></pre>

1,707,310

Is it possible to use ref types in C# built-in Action<> delegate?

C# has built-in delegates <code>Action<></code> and <code>Func<></code>. Is it possible to use 'ref' type parameters for this delegates? For example, this code: <pre><code>public delegate void DTest( ref Guid a ); public event DTest ETest; </code></pre> Will compile. But if I use <code>Action<></code>, it will not compile: <pre><code>public event Action< ref Guid > ETest; </code></pre> Any hints?

1,707,325

2

0

null

2009-11-10 11:31:22.86 UTC

9

2011-11-13 16:04:13.083 UTC

2009-11-10 11:35:47.393 UTC

null

5,380

null

69,882

null

1

45

c#

21,450

No, you can't use pass-by-reference with the <code>Action</code> delegates. While there is a concept of "type passed by reference" as a <code>Type</code> in the framework, it's not really a type in the normal sense as far as C# is concerned. <code>ref</code> is a modifier for the parameter, not part of the type name, if you see what I mean. However, you can build your own set of equivalent types, e.g. <pre><code>delegate void ActionRef<T>(ref T item); </code></pre> Of course, if you want a mixture of ref and non-ref parameters in the same delegate, you get into a horrible set of combinations: <pre><code>delegate void ActionRef1<T1, T2>(ref T1 arg1, T2 arg2); delegate void ActionRef2<T1, T2>(T1 arg1, ref T2 arg2); delegate void ActionRef3<T1, T2>(ref T1 arg1, ref T2 arg2); </code></pre>

1,379,247

Tell if a Django Field is required from template

I'm rendering a form. I would like to put a mark next to all the fields that must be filled in. Simple stuff usually... but I've no idea how to access that information! <pre><code>{% if field.required %}REQUIRED!!{% endif %} </code></pre> doesn't bring any love...

1,379,288

2

1

null

2009-09-04 13:26:59.11 UTC

9

2009-09-04 13:31:51.867 UTC

null

12,870

null

1

59

django|django-templates

17,723

<pre><code>{% if field.field.required %} </code></pre> From <a href="http://www.djangosnippets.org/snippets/474/" rel="noreferrer">this snippet</a>

45,815,899

LocalNotification with AlarmManager and BroadcastReceiver not firing up in Android O (oreo)

I've got my local notifications running on androids prior to SDK 26 But in a Android O I've got the following warning, and the broadcast receiver is not fired. <pre><code>W/BroadcastQueue: Background execution not allowed: receiving Intent { act=package.name.action.LOCAL_NOTIFICATION cat=[com.category.LocalNotification] flg=0x14 (has extras) } to package.name/com.category.localnotifications.LocalNotificationReceiver </code></pre> From what I've read broadcast receivers are more restricted in android O, but if so, how should I schedule the broadcast if I want it launching even if the main activity is not running? Should I use services instead of receivers? This is the AlarmManager launch code: <pre><code>public void Schedule(String aID, String aTitle, String aBody, int aNotificationCode, long aEpochTime) { Bundle lExtras = new Bundle(); lExtras.putInt("icon", f.getDefaultIcon()); lExtras.putString("title", aTitle); lExtras.putString("message", aBody); lExtras.putString("id", aID); lExtras.putInt("requestcode", aNotificationCode); Intent lIntent = new Intent(LocalNotificationScheduler.ACTION_NAME) .addCategory(NotificationsUtils.LocalNotifCategory) .putExtras(lExtras); PendingIntent lPendIntent = PendingIntent.getBroadcast(f.getApplicationContext(), aNotificationCode, lIntent, PendingIntent.FLAG_UPDATE_CURRENT); AlarmManager lAlarmMgr = (AlarmManager) f.getSystemService(Context.ALARM_SERVICE); lAlarmMgr.set(AlarmManager.RTC, 1000, lPendIntent); } </code></pre> This is the receiver code: <pre><code>public class LocalNotificationReceiver extends BroadcastReceiver { public static native void nativeReceiveLocalNotification (String aID, String aTitle, String aMessage, boolean aOnForeground ); /** This method receives the alarms set by LocalNotificationScheduler, * notifies the CAndroidNotifications c++ class, and (if needed) ships a notification banner */ @Override public void onReceive(Context aContext, Intent aIntent) { Toast.makeText(context, text, duration).show(); } </code></pre> } Android manifest: <pre><code><receiver android:name="com.category.localnotifications.LocalNotificationReceiver"> <intent-filter> <action android:name="${applicationId}.action.LOCAL_NOTIFICATION" /> <category android:name="com.category.LocalNotification" /> </intent-filter> </receiver> </code></pre>

45,825,690

4

3

null

2017-08-22 11:03:23.683 UTC

10

2019-06-15 11:56:28.1 UTC

null

8,375,325

null

1,894,850

null

1

25

android|broadcastreceiver|alarmmanager|android-8.0-oreo

19,505

Android O are pretty new to-date. Hence, I try to digest and provide as accurate possible information. From <a href="https://developer.android.com/about/versions/oreo/background.html#broadcasts" rel="noreferrer">https://developer.android.com/about/versions/oreo/background.html#broadcasts</a> <ul> <li>Apps that target Android 8.0 or higher can no longer register broadcast receivers for implicit broadcasts in their manifest. <ul> <li>Apps can use <code>Context.registerReceiver()</code> at runtime to register a receiver for any broadcast, whether implicit or explicit.</li> </ul></li> <li>Apps can continue to register explicit broadcasts in their manifest.</li> </ul> <hr> Also, in <a href="https://developer.android.com/training/scheduling/alarms.html" rel="noreferrer">https://developer.android.com/training/scheduling/alarms.html</a> , the examples are using explicit broadcast, and doesn't mention anything special regarding Android O. <hr> May I suggest you try out explicit broadcast as follow? <pre><code>public static void startAlarmBroadcastReceiver(Context context, long delay) { Intent _intent = new Intent(context, AlarmBroadcastReceiver.class); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, _intent, 0); AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); // Remove any previous pending intent. alarmManager.cancel(pendingIntent); alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + delay, pendingIntent); } </code></pre> <hr> <h2>AlarmBroadcastReceiver</h2> <pre><code>public class AlarmBroadcastReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { } } </code></pre> In <code>AndroidManifest</code>, just define the class as <pre><code><receiver android:name="org.yccheok.AlarmBroadcastReceiver" > </receiver> </code></pre>

29,392,281

Manually trigger Django email error report

<a href="https://docs.djangoproject.com/en/1.7/howto/error-reporting/">Django error reporting</a> handles uncaught exceptions by sending an email, and (optionally) shows user a nice 500 error page. This works very well, but in a few instances I'd like to allow users to continue with their business uninterrupted, but still have Django send me the email error report about the exception. So basically: can I manually send email error report even if I catch the exception? Of course, I'd like to avoid manually generating the error report email.

29,878,519

6

0

null

2015-04-01 13:37:28.753 UTC

5

2020-12-15 15:20:33.63 UTC

null

236,195

null

1

35

python|django|exception-handling|django-email|django-errors

6,089

You can use the following code to send manually an email about a <code>request</code> and an exception <code>e</code>: <pre><code>import sys import traceback from django.core import mail from django.views.debug import ExceptionReporter def send_manually_exception_email(request, e): exc_info = sys.exc_info() reporter = ExceptionReporter(request, is_email=True, *exc_info) subject = e.message.replace('\n', '\\n').replace('\r', '\\r')[:989] message = "%s\n\n%s" % ( '\n'.join(traceback.format_exception(*exc_info)), reporter.filter.get_request_repr(request) ) mail.mail_admins( subject, message, fail_silently=True, html_message=reporter.get_traceback_html() ) </code></pre> You can test it in a view like this: <pre><code>def test_view(request): try: raise Exception except Exception as e: send_manually_exception_email(request, e) </code></pre>

53,674,529

Is there a way on VS Code to import Makefile projects?

As the title said, can I populate automatically c_cpp_properties.json from an existing Makefile? Edit: For others trying to import makefiles, I have found a set of scripts that perform exactly what I wanted to achieve, the management of STM32 embedded projects through VS Code. If you dig into the scripts folder you can find the make parser and the VSCode project files populator. <a href="https://github.com/damogranlabs/VS-Code-STM32-IDE" rel="noreferrer">Here</a> the repo, enjoy!

53,687,462

4

3

null

2018-12-07 17:46:18.247 UTC

4

2020-07-11 08:19:44.817 UTC

2020-02-06 14:55:56.073 UTC

null

3,240,596

null

3,240,596

null

1

12

visual-studio-code|makefile|stm32|stm32cubemx

42,020

This answer may not entirely give you what you want, but hopefully it helps you setting up your VS Code environment. In your question title, you mention "Makefile projects", which is an indication that you have the wrong impression that (GNU) Makefiles capture project settings in a way similar to Visual Studio project files do. Makefiles do not work like that and the short answer to your question is No, there does not seem to be a way to "import" Makefiles into VS Code and have it automatically set values in your <code>c_cpp_properties.json</code> file. Having said that, there are some other mechanisms that may help you getting started with VS Code in your situation, depending on the other elements you have in your toolchain. VS Code works with the premise that it opens one or more directories in your file system. When you do so, it will automatically scan all its subdirectories, display the tree and do linting (if enabled) to detect problems. Indeed, include directories need to be added manually to your <code>c_cpp_properties.json</code> file but to add all your subdirectories recursively to the list of include directories, you can use the expression <pre><code>"${workspaceRoot}/**" </code></pre> as one of the elements in your <code>includePath</code> setting. See the blog post <a href="https://blogs.msdn.microsoft.com/vcblog/2018/05/08/visual-studio-code-cc-extension-may-2018-update-intellisense-configuration-just-got-so-much-easier/" rel="noreferrer">Visual Studio Code C/C++ extension May 2018 Update – IntelliSense configuration just got so much easier!</a> for more details. That often resolves a lot of the missing symbols. If you are using external or 3rd party libraries as well, then you have to add those to your <code>includePath</code> setting manually, there is no way around that. Additionally, you can create VS Code Tasks to execute your <code>make</code> command to your liking. This is explained here: <a href="https://code.visualstudio.com/docs/editor/tasks" rel="noreferrer">Integrate with External Tools via Tasks</a>. The <a href="https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools" rel="noreferrer">Microsoft C/C++ Extension</a> comes with a set of so-called problemMatchers that parse the output of your command and can interpret that for certain known compilers. You will see hyperlinks for errors and warning to navigate directly to the associated location in your code. An example of such a Task may look like this: <pre><code> { "label": "Build All Debug", "type": "shell", "command": "make -f path/to/Makefile DEBUG=1", "group": { "kind": "build", "isDefault": true }, "presentation": { "reveal": "always", "panel": "new" }, "problemMatcher": [ "$gcc" ] } </code></pre>

5,832,693

regex to find a word before and after a specific word

I need a regex that gives me the word before and after a specific word, included the search word itself. Like: "This is some dummy text to find a word" should give me a string of "dummy text to" when text is my search word. Another question, it's possible that the string provided will contain more then once the search word so I must be able to retrieve all matches in that string with C#. Like "This is some dummy text to find a word in a string full with text and words" Should return: <ul> <li>"dummy text to"</li> <li>"with text and"</li> </ul> EDIT: Actually I should have all the matches returned that contain the search word. A few examples: Text is too read. -> Text is Read my text. -> my text This is a text-field example -> a text-field example

5,833,319

5

3

null

2011-04-29 13:29:42.853 UTC

10

2020-05-22 13:25:51.16 UTC

2017-12-01 11:43:02.297 UTC

null

3,885,376

null

731,127

null

1

13

c#|regex

47,112

EDIT: If you want to grab all the content from the space before first word to the space after the word use: <pre><code>(?:\S+\s)?\S*text\S*(?:\s\S+)? </code></pre> A simple tests: <pre><code>string input = @" This is some dummy text to find a word in a string full with text and words Text is too read Read my text. This is a text-field example this is some dummy la@text.be to read"; var matches = Regex.Matches( input, @"(?:\S+\s)?\S*text\S*(?:\s\S+)?", RegexOptions.IgnoreCase ); </code></pre> the matches are: <pre>dummy text to with text and Text is my text. a text-field example dummy la@text.be to</pre>

5,603,910

Define enums within a method in C#?

I have mainly a C++ background and I am learning C#. So, I need some help with C# idioms and style. I am trying to write, in C#, a small text-file parsing method in which I need a simple state variable with three states. In C++ I would declare an <code>enum</code> like this for the state variable: <pre class="lang-cpp prettyprint-override"><code>enum { stHeader, stBody, stFooter} state = stBody; </code></pre> ...and then use it in my parsing loop like this: <pre class="lang-cpp prettyprint-override"><code>if (state == stHeader && input == ".endheader") { state = stBody; } </code></pre> In C# I realize that it is not possible to declare an <code>enum</code> inside a method. So, what I am supposed to do for sake of clean style? Declare this internal <code>enum</code> outside of the method? Use magic numbers 1,2,3? Create a separate class for this? Please help me clear up my confusion.

5,603,939

5

3

null

2011-04-09 08:45:42.677 UTC

1

2020-06-25 13:02:43.083 UTC

2016-06-10 13:49:25.257 UTC

null

1,497,596

null

19,884

null

1

29

c#|enums|coding-style

23,592

The closest you can get is a private nested enum with in the class: <pre><code>public class TheClass { private enum TheEnum { stHeader, stBody, stFooter } // ...the rest of the methods properties etc... } </code></pre>

6,032,032

How do I compute the non-client window size in WPF?

WPF has the <a href="http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.aspx" rel="noreferrer"><code>SystemParameters</code> class</a> that exposes a great number of system metrics. On my computer I have noticed that a normal window has a title that is 30 pixels high and a border that is 8 pixels wide. This is on Windows 7 with the Aero theme enabled: <img src="https://i.stack.imgur.com/cBEZj.png" alt="Non-client area - Aero"> However, <code>SystemParameters</code> return the following values: <pre><code>SystemParameters.BorderWidth = 5 SystemParameters.CaptionHeight = 21 </code></pre> Here I have disabled the Aero theme: <img src="https://i.stack.imgur.com/KZXkC.png" alt="Non-client area - classic"> Now, <code>SystemParameters</code> return the following values: <pre><code>SystemParameters.BorderWidth = 1 SystemParameters.CaptionHeight = 18 </code></pre> How do I compute the actual observed values by using <code>SystemParameters</code>?

6,032,318

5

1

null

2011-05-17 14:06:57.27 UTC

10

2020-05-29 10:01:42.947 UTC

2011-05-17 17:47:18.783 UTC

null

98,607

null

98,607

null

1

36

c#|.net|wpf|windows|winapi

10,443

For a resizable window you need to use a different set of parameters to compute the size: <pre><code>var titleHeight = SystemParameters.WindowCaptionHeight + SystemParameters.ResizeFrameHorizontalBorderHeight; var verticalBorderWidth = SystemParameters.ResizeFrameVerticalBorderWidth; </code></pre> These sizes will change when you modify the theme.

5,891,555

Display the date, like "May 5th", using pythons strftime?

<blockquote> Possible Duplicate: <a href="https://stackoverflow.com/questions/739241/python-date-ordinal-output">Python: Date Ordinal Output?</a> </blockquote> In Python time.strftime can produce output like "Thursday May 05" easily enough, but I would like to generate a string like "Thursday May 5th" (notice the additional "th" on the date). What is the best way to do this?

5,891,598

5

4

null

2011-05-05 01:00:46.893 UTC

7

2011-05-05 15:27:19.23 UTC

2017-05-23 12:02:06.967 UTC

null

-1

null

565,879

null

1

43

python|strftime

34,471

<code>strftime</code> doesn't allow you to format a date with a suffix. Here's a way to get the correct suffix: <pre><code>if 4 <= day <= 20 or 24 <= day <= 30: suffix = "th" else: suffix = ["st", "nd", "rd"][day % 10 - 1] </code></pre> <a href="http://snipplr.com/view/3468/python-date-suffixes-for-strftime/" rel="noreferrer">found here</a> <h2>Update:</h2> Combining a more compact solution based on Jochen's comment with <a href="https://stackoverflow.com/questions/5891555/display-the-date-like-may-5th-using-pythons-strftime/5891658#5891658">gsteff's answer</a>: <pre><code>from datetime import datetime as dt def suffix(d): return 'th' if 11<=d<=13 else {1:'st',2:'nd',3:'rd'}.get(d%10, 'th') def custom_strftime(format, t): return t.strftime(format).replace('{S}', str(t.day) + suffix(t.day)) print custom_strftime('%B {S}, %Y', dt.now()) </code></pre> Gives: <code>May 5th, 2011</code>

5,748,661

Most efficient way to check if an object is a value type

WARNING: THIS CODE SUCKS, SEE ANTHONY'S COMMENTS Which is faster? 1. <pre><code> public bool IsValueType<T>(T obj){ return obj is ValueType; } </code></pre> 2. <pre><code> public bool IsValueType<T>(T obj){ return obj == null ? false : obj.GetType().IsValueType; } </code></pre> 3. <pre><code> public bool IsValueType<T>(T obj){ return default(T) != null; } </code></pre> 4.Something else

5,748,763

6

8

null

2011-04-21 19:11:34.873 UTC

16

2021-07-28 14:11:18.023 UTC

2011-04-21 19:34:50.667 UTC

null

344,211

null

344,211

null

1

53

c#|.net|performance|value-type

64,413

You aren't really testing an object - you want to test the type. To call those, the caller must know the type, but... meh. Given a signature <code><T>(T obj)</code> the only sane answer is: <pre><code>public bool IsValueType<T>() { return typeof(T).IsValueType; } </code></pre> or if we want to use an example object for type inference purposes: <pre><code>public bool IsValueType<T>(T obj) { return typeof(T).IsValueType; } </code></pre> this doesn't need boxing (<code>GetType()</code> is boxing), and doesn't have problems with <code>Nullable<T></code>. A more interesting case is when you are passing <code>object</code>... <pre><code> public bool IsValueType(object obj); </code></pre> here, we already have massive problems with <code>null</code>, since that could be an empty <code>Nullable<T></code> (a struct) or a class. But A reasonable attempt would be: <pre><code>public bool IsValueType(object obj) { return obj != null && obj.GetType().IsValueType; } </code></pre> but note that it is incorrect (and unfixable) for empty <code>Nullable<T></code>s. Here it becomes pointless to worry about boxing as we are already boxed.

6,029,916

How to enable file sharing for my app?

I have an image editing app where users can apply effects to photos. How could I enable it so that users can see my app in iTunes in the File Sharing tab and then just drag+drop photos to the app? Some of the eBook readers like Stanza works like this and it would be a cool option. Maybe someone can point out a tutorial or resource that talks about how to enable and use this technique.

6,029,954

7

1

null

2011-05-17 11:07:36.977 UTC

56

2020-08-13 04:40:13.813 UTC

null

472,300

null

1

170

ios|file-sharing

161,876

You just have to set <a href="https://developer.apple.com/documentation/bundleresources/information_property_list/uifilesharingenabled" rel="noreferrer"><code>UIFileSharingEnabled</code></a> (<code>Application Supports iTunes file sharing</code>) key in the info plist of your app. <a href="https://web.archive.org/web/20160904190038/https://developer.apple.com/library/ios/documentation/Miscellaneous/Conceptual/iPhoneOSTechOverview/CoreServicesLayer/CoreServicesLayer.html#//apple_ref/doc/uid/TP40007898-CH10-SW30" rel="noreferrer">Here's</a> a link for the documentation. Scroll down to the file sharing support part. In the past, it was also necessary to define <code>CFBundleDisplayName</code> (<code>Bundle Display Name</code>), if it wasn't already there. <a href="https://stackoverflow.com/a/4546581/1436359">More details here</a>.

39,231,880

Kubernetes API - Get Pods on Specific Nodes

Reading the <a href="http://kubernetes.io/docs/user-guide/labels/#selecting-sets-of-nodes" rel="noreferrer">Kubernets documentation</a> it looks to be possible to select a certain range of pods based on labels. I want to select all the pods on one node but I don't want to label each pod on their corresponding node. Am I missing something from the documentation or is it just not possible to select by node? If I do: <pre class="lang-shell prettyprint-override"><code>kubectl get pods \ --output=wide --namespace=$NS \ --server=$SERVER | head #=> NAME READY STATUS RESTARTS AGE NODE </code></pre> Can any of these headers be used as selector? If yes, how to do it with <code>kubectl</code>? How to do it with the API?

50,811,992

6

1

null

2016-08-30 15:42:02.073 UTC

51

2022-01-26 14:44:42.117 UTC

2022-01-26 00:07:42.46 UTC

null

5,963,316

null

3,556,705

null

1

191

kubernetes|kubectl

152,005

As mentioned in the accepted answer the PR is now merged and you can get pods by node as follows: <pre><code>kubectl get pods --all-namespaces -o wide --field-selector spec.nodeName=<node> </code></pre>

5,365,464

MATLAB: Is it possible to overload operators on native constructs (cells, structs, etc)?

I'm using cells to manage data in some stuff I'm working on. I'd like to be able to do things like: <pre><code>A = cellfun( @(X)( randn( 5,5 ) ), cell( 5,1 ), 'UniformOutput', 0 ); B = cellfun( @(X)( randn( 5,5 ) ), cell( 5,1 ), 'UniformOutput', 0 ); %# %# Each of the following would fail if cell member dimensions %# don't match up %# %# matrix sums for each cell entry %# C = A + B; C = cellfun( @(X,Y)( X + Y ), A, B, 'UniformOutput', 0 ); %# %# direct/hadamard product %# D = A .* B; D = cellfun( @(X,Y)( X .* Y ), A, B, 'UniformOutput', 0 ); %# %# matrix-matrix products (not across all entries) %# E = A * B; E = cellfun( @(X,Y)( X * Y ), A, B, 'UniformOutput', 0 ); </code></pre> However, I don't want the extremely verbose syntax to do it. It seems a bit overboard to create a new class for this when all I want to do is provide a definition for math operators on cells. The question: Is a class the only way to go about it? If I write a class to do this, it certainly makes it easier to write the code. The biggest negatives I see are related to optimizations, though there's a few other things that bug me about it.. Any optimizations going on behind the scenes (eg, when Jacket compiles something to run on a GPU) would potentially have a harder time determining what optimizations to make. As an example, suppose I have two cells (A,B) containing a number of matrices of appropriate dimension. If I write code to produce a new cell: <pre><code>Z = c1*A + c2*B </code></pre> ... with scalars {c1,c2}, I can write it in such a way that Jacket (or whatever) will easily determine that it should do the calculations as: <pre><code>Z{kk} = c1*A{kk} + c2*B{kk} </code></pre> or perhaps an even better optimization than that. Otherwise. it may end up with something slower and/or less memory efficient, eg: <pre><code>temp1 = cellfun( @(X)( c1*X ), A ); temp2 = cellfun( @(X)( c2*X ), B ); Z = cellfun( @plus, temp1, temp2 ); </code></pre> Assuming MATLAB or Jacket are unable to optimize it, this would end up using too much memory.

5,373,729

1

2

null

2011-03-19 22:50:29.383 UTC

14

2017-03-30 05:03:56.953 UTC

null

52,738

null

549,246

null

1

17

matlab|operator-overloading|cell|arithmetic-expressions

2,876

It is in fact possible to create new operators or overload existing ones for built-in data types in MATLAB. I describe one example of this in <a href="https://stackoverflow.com/a/2430278/52738">my answer</a> to another SO question about <a href="https://stackoverflow.com/q/2425251/52738">modifying the default overflow behavior of integer types</a>. First, you may want to look at what methods currently exist for cell arrays. You can do this using the function <a href="http://www.mathworks.com/help/matlab/ref/methods.html" rel="nofollow noreferrer">METHODS</a>, and here's what I get in MATLAB R2010b: <pre><code>>> methods cell Methods for class cell: aa2nt issorted regexptranslate strfind accumarray newdepfun reshape strjust cell2struct nt2aa rna2dna strmatch ctranspose nwalign seq2regexp strtok display permute setdiff transpose dna2rna regexp setxor union intersect regexpi sort unique ismember regexprep strcat </code></pre> The arithmetic operator methods would show up in the above list as their <a href="http://www.mathworks.com/help/matlab/arithmetic-operators.html" rel="nofollow noreferrer">function equivalents</a>, like <code>plus</code> for the <code>+</code> operator or <code>times</code> for the <code>.*</code> operator. Only the <code>transpose</code> method (<code>.'</code> operator) is defined for cell arrays. You would have to create the rest yourself, defining how a given operator will behave for cell arrays arguments. You can do this by first making a new folder called <code>@cell</code> and placing it in an existing folder on your <a href="https://www.mathworks.com/help/matlab/matlab_env/what-is-the-matlab-search-path.html" rel="nofollow noreferrer">MATLAB path</a>. You would then place your new methods in the <code>@cell</code> folder. For example, a very simple implementation of a <code>plus</code> method for cell arrays (without any input-checking, error-checking, etc.) would be this: <pre><code>function C = plus(A,B) C = cellfun(@plus,A,B,'UniformOutput',false); %# Apply plus cell-wise end </code></pre> In the above code, you would probably first want to check that the operands <code>A</code> and <code>B</code> are cell arrays of the same size. However, you could create whatever unique functionality you want, such as allowing <code>B</code> to be a scalar value which would get added to every cell of <code>A</code>. It's totally up to you to define how the <code>+</code> operator will behave for cell arrays. This would then allow you to write your code in a much more compact way, as in this example: <pre><code>>> A = {[1 2 3] [4 5] 6}; %# One 3-element cell array >> B = {5 [4 5] 2}; %# Another 3-element cell array >> C = A+B; %# Use the new plus operator >> C{:} %# Display the cell contents ans = 6 7 8 ans = 8 10 ans = 8 </code></pre> I can't really speak to the behind-the-scenes optimizations and how this might affect them. I know that the documentation <a href="http://www.mathworks.com/help/techdoc/matlab_prog/f8-784135.html" rel="nofollow noreferrer">"Techniques for Improving Performance"</a> specifically mentions this about <a href="http://www.mathworks.com/help/techdoc/matlab_prog/f8-784135.html#f8-790494" rel="nofollow noreferrer">overloading built-in functions</a>: <blockquote> Overloading MATLAB built-in functions on any of the standard MATLAB data classes can negatively affect performance. For example, if you overload the <code>plus</code> function to handle any of the integer classes differently, you may hinder certain optimizations in the MATLAB built-in function code for <code>plus</code>, and thus may slow down any programs that make use of this overload. </blockquote> However, in your case you aren't overloading existing functions for a class. You're simply creating new ones that didn't exist for that class, so it's hard to say what effect this may ultimately have on performance.

5,453,109

How to round all values in a matrix?

I use the following method to store all my correlations in a matrix: <pre><code>corrs <- cor(dataset, use="pairwise.complete.obs") </code></pre> But now I'd like to round the values to two digits after the comma. How can I do that? I just found a round function but don't know how to apply it to all values.

5,453,122

1

0

null

2011-03-27 23:07:21.31 UTC

1

2016-11-17 09:30:10.527 UTC

2011-03-27 23:10:36.673 UTC

null

142,162

anon

null

1

17

r|rounding

42,376

Just as in your other question, use the function (<code>round</code>) you found :) <pre><code>corrs <- round(cor(dataset, use="pairwise.complete.obs"), 2) </code></pre> For example: <pre><code>> round(cor(cars),2) speed dist speed 1.00 0.81 dist 0.81 1.00 </code></pre>

24,570,932

postgresql group by and inner join

I want a query in SQL which does <code>INNER JOIN</code> and <code>GROUP BY</code> at the same time. I tried the following which doesn't work: <pre><code>SELECT customer.first_name, SUM(payment.amount) FROM customer GROUP BY customer.customer_id INNER JOIN payment ON payment.customer_id = customer.customer_id; </code></pre> Thank you in advance!

24,571,047

2

1

null

2014-07-04 09:23:38.677 UTC

9

2019-03-27 22:09:20.39 UTC

null

3,797,850

null

1

28

sql|postgresql|group-by|inner-join

32,792

First, <code>GROUP BY</code> comes at the end of the query (just before <code>order by</code> or <code>having</code> clauses if you have some). Then, all fields in the select which are not in an aggregation function must be in the group by clause. so <pre><code>SELECT customer.first_name, SUM(payment.amount) FROM customer INNER JOIN payment ON payment.customer_id = customer.customer_id GROUP BY customer.first_name; </code></pre> But customers with same first_name will be grouped, which is probably not really what you want. so rather <pre><code>SELECT customer.first_name, SUM(payment.amount) FROM customer INNER JOIN payment ON payment.customer_id = customer.customer_id GROUP BY customer.first_name, customer.customer_id; </code></pre>

24,497,881

boost::asio::spawn yield as callback

I'm trying to rewrite a project using <code>boost::asio::spawn</code> coroutines. Some parts of the project cannot be changed. For example, the storage protocol library is also written with <code>boost::asio</code>, but without coroutines. The problem is how to convert <code>yield_context</code> into a normal callback (a <code>boost::function</code> object or a classical functor). This is what we have in the storage library API: <pre><code>void async_request_data(uint64_t item_id, boost::function< void(Request_result *) > callback); </code></pre> As we know from examples, the asio yield context can be used like this: <pre><code> my_socket.async_read_some(boost::asio::buffer(data), yield); </code></pre> In this case a <code>boost::asio::yield_context</code> object serves as a callback for async_read_some. I would like to pass a yield object as the second argument to <code>async_request_data</code>, so i can use it in a synchronous manner. How can this be done? I think it may be possible via some proxy-object, possibly using an approach based on asio_handler_invoke. But I am having trouble seeing how to do this.

24,645,114

4

1

null

2014-06-30 19:49:20.657 UTC

8

2022-08-13 17:31:09.633 UTC

2014-07-06 04:16:46.073 UTC

null

3,697,273

null

1,671,032

null

1

13

c++|boost|boost-asio|coroutine

5,359

Looks like the best documentation for this feature can be found in a C++ standard proposal written by the boost asio author: <a href="http://www.open-std.org/Jtc1/sc22/wg21/docs/papers/2014/n4045.pdf" rel="noreferrer">N4045 – Library Foundations for Asynchronous Operations, Revision 2</a> See section 9.1 which says: <pre><code>handler_type_t<CompletionToken, void(error_code, size_t)> #3 handler(std::forward<CompletionToken>(token)); </code></pre> <blockquote> 3: The completion token is converted into a handler, i.e. a function object to be called when the asynchronous operation completes. The signature specifies the arguments that will be passed to the handler. </blockquote> I guess in your case the <code>CompletionToken</code> template argument will actually be <code>boost::asio::yield_context</code> and <code>handler_type</code> converts it to a callback object. <hr> Here is the code from section 9.1 updated to call your <code>async_request_data</code> function: <pre><code>template <class CompletionToken> auto async_foo(uint64_t item_id, CompletionToken&& token) { handler_type_t<CompletionToken, void(Request_result *)> handler(std::forward<CompletionToken>(token)); async_result<decltype(handler)> result(handler); async_request_data(item_id, handler); return result.get(); } </code></pre>

19,674,311

JSON serializing Mongodb

I am using the python package pymongo to retrieve data from a mongodb database. <pre><code>>>> r = collection.find() # returns an object of class 'Cursor' </code></pre> Then I convert to a list <pre><code>>>> l = list(r) # returns a 'list' of 'dict' </code></pre> here is what print(l) returns: <pre><code>>>> [{u'date': datetime.datetime(2009, 11, 10, 10, 45), u'_id': 1, u'name': u'name1', u'value': 11},{u'date': datetime.datetime(2013, 11, 10, 10, 45), u'_id': 2, u'name': u'name2', u'value': 22}] </code></pre> Now I need to convert to JSON so that I can manipulate it. <pre><code>>>> json.dumps(l) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python2.7/json/__init__.py", line 231, in dumps return _default_encoder.encode(obj) File "/usr/lib/python2.7/json/encoder.py", line 201, in encode chunks = self.iterencode(o, _one_shot=True) File "/usr/lib/python2.7/json/encoder.py", line 264, in iterencode return _iterencode(o, 0) File "/usr/lib/python2.7/json/encoder.py", line 178, in default raise TypeError(repr(o) + " is not JSON serializable") TypeError: datetime.datetime(2009, 11, 12, 11, 14) is not JSON serializable </code></pre> I have also tried to follow <a href="http://api.mongodb.org/python/1.7/api/pymongo/json_util.html" rel="noreferrer">http://api.mongodb.org/python/1.7/api/pymongo/json_util.html</a> without success: Edit: the recent version of the link is <a href="http://api.mongodb.org/python/current/api/bson/json_util.html" rel="noreferrer">http://api.mongodb.org/python/current/api/bson/json_util.html</a> <pre><code>>>> json.dumps(l, default=json_util.default) Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'json_util' is not defined </code></pre> Note: precisely I need to push this result to R using the R package rPython and its function rPython::python.get("l") Side Question: What is the u (u'Date', u'name', etc..) before each field in the list of dict?

19,674,373

5

0

null

2013-10-30 05:09:45.743 UTC

11

2021-11-07 14:43:16.983 UTC

2020-05-20 06:44:02.597 UTC

null

958,409

null

482,711

null

1

32

python|mongodb|pymongo

67,608

The pymongo documentation you pointed is obsolete. If you're using version 1.7 I recommend updating. With a more recent version you can do this: <pre><code>from bson.json_util import dumps dumps(l) </code></pre> <a href="https://pymongo.readthedocs.io/en/stable/api/bson/json_util.html" rel="noreferrer">https://pymongo.readthedocs.io/en/stable/api/bson/json_util.html</a> Side answer: <code>u'name'</code>, <code>u'date'</code>, <code>u'_id'</code> etc are the names of the fields of the document on the database.

42,358,448

How to backup git stash content?

<ul> <li>I have pending uncommitted works</li> <li>I need to switch to another branch for some urgent work</li> <li>As my current Work in Progress is not finished, I don't want to commit it. I use <code>git stash</code> to put it aside.</li> </ul> Additionally, I would like to backup that stash content on a shared drive. Just for safety. What is an elegant solution to archive the stash content on file?

42,358,522

5

0

null

2017-02-21 04:02:53.143 UTC

9

2022-04-01 22:01:59.96 UTC

null

657,067

null

1

29

git

11,030

You can get the diff by running show command: <pre><code>git stash show -p > stash.diff </code></pre> This is the diff file which you can use as a backup. Later you can apply the diff to the existing repository: <pre><code>git apply stash.diff # and potentially stash again: git stash </code></pre>

33,436,525

How to parse excel rows back to types using EPPlus

EPPlus has a convenient <code>LoadFromCollection<T></code> method to get data of my own type into a worksheet. For example if I have a class: <pre><code>public class Customer { public int Id { get; set; } public string Firstname { get; set; } public string Surname { get; set; } public DateTime Birthdate { get; set; } } </code></pre> Then the following code: <pre><code>var package = new ExcelPackage(); var sheet = package.Workbook.Worksheets.Add("Customers"); var customers = new List<Customer>{ new Customer{ Id = 1, Firstname = "John", Surname = "Doe", Birthdate = new DateTime(2000, 1, 1) }, new Customer{ Id = 2, Firstname = "Mary", Surname = "Moe", Birthdate = new DateTime(2001, 2, 2) } }; sheet.Cells[1, 1].LoadFromCollection(customers); package.Save(); </code></pre> ...will add 2 rows to a worksheet called "Customers". My question is if there is a convenient counterpart to extract the rows from excel (for example after some modifications have been made) back into my types. Something like: <pre><code>var package = new ExcelPackage(inputStream); var customers = sheet.Dimension.SaveToCollection<Customer>() ?? </code></pre> I have <ul> <li>been looking through the EPPlus codebase</li> <li>searched for any <a href="https://stackoverflow.com/search?page=2&tab=relevance&q=epplus%20save">saving</a> questions</li> <li>searched for any <a href="https://stackoverflow.com/search?page=2&tab=relevance&q=epplus%20parse">parsing</a> questions</li> <li>seen <a href="https://stackoverflow.com/questions/11685204/reading-excel-spreasheet-using-epplus">this</a> question on reading single cells</li> </ul> ... but found nothing on how to simply parse the rows to my type.

37,746,915

2

0

null

2015-10-30 12:55:29.923 UTC

12

2016-06-10 12:14:42.227 UTC

2017-05-23 12:10:19.85 UTC

null

-1

null

2,952,809

null

1

35

c#|epplus

34,088

Inspired by the above I took it a slightly different route. <ol> <li>I created an attribute and mapped each property to a column. </li> <li>I use the DTO type to define what I expect each column to be</li> <li>Allow columns to not be requried</li> <li>Use EPPlus to convert the types</li> </ol> By doing so it allows me to use traditional model validation, and embrace changes to column headers -- Usage: <pre><code>using(FileStream fileStream = new FileStream(_fileName, FileMode.Open)){ ExcelPackage excel = new ExcelPackage(fileStream); var workSheet = excel.Workbook.Worksheets[RESOURCES_WORKSHEET]; IEnumerable<ExcelResourceDto> newcollection = workSheet.ConvertSheetToObjects<ExcelResourceDto>(); newcollection.ToList().ForEach(x => Console.WriteLine(x.Title)); } </code></pre> Dto that maps to excel <pre><code>public class ExcelResourceDto { [Column(1)] [Required] public string Title { get; set; } [Column(2)] [Required] public string SearchTags { get; set; } } </code></pre> This is the attribute definition <pre><code>[AttributeUsage(AttributeTargets.All)] public class Column : System.Attribute { public int ColumnIndex { get; set; } public Column(int column) { ColumnIndex = column; } } </code></pre> Extension class to handle mapping rows to DTO <pre><code>public static class EPPLusExtensions { public static IEnumerable<T> ConvertSheetToObjects<T>(this ExcelWorksheet worksheet) where T : new() { Func<CustomAttributeData, bool> columnOnly = y => y.AttributeType == typeof(Column); var columns = typeof(T) .GetProperties() .Where(x => x.CustomAttributes.Any(columnOnly)) .Select(p => new { Property = p, Column = p.GetCustomAttributes<Column>().First().ColumnIndex //safe because if where above }).ToList(); var rows= worksheet.Cells .Select(cell => cell.Start.Row) .Distinct() .OrderBy(x=>x); //Create the collection container var collection = rows.Skip(1) .Select(row => { var tnew = new T(); columns.ForEach(col => { //This is the real wrinkle to using reflection - Excel stores all numbers as double including int var val = worksheet.Cells[row, col.Column]; //If it is numeric it is a double since that is how excel stores all numbers if (val.Value == null) { col.Property.SetValue(tnew, null); return; } if (col.Property.PropertyType == typeof(Int32)) { col.Property.SetValue(tnew, val.GetValue<int>()); return; } if (col.Property.PropertyType == typeof(double)) { col.Property.SetValue(tnew, val.GetValue<double>()); return; } if (col.Property.PropertyType == typeof(DateTime)) { col.Property.SetValue(tnew, val.GetValue<DateTime>()); return; } //Its a string col.Property.SetValue(tnew, val.GetValue<string>()); }); return tnew; }); //Send it back return collection; } } </code></pre>

41,573,283

Seaborn, violin plot with one data per column

I would like to combine this violin plot <a href="http://seaborn.pydata.org/generated/seaborn.violinplot.html" rel="noreferrer">http://seaborn.pydata.org/generated/seaborn.violinplot.html</a> (fourth example with split=True) with this one <a href="http://seaborn.pydata.org/examples/elaborate_violinplot.html" rel="noreferrer">http://seaborn.pydata.org/examples/elaborate_violinplot.html</a>. Actually, I have a dataFrame with a column <code>Success</code> (Yes or No) and several data column. For example : <pre><code>df = pd.DataFrame( {"Success": 50 * ["Yes"] + 50 * ["No"], "A": np.random.randint(1, 7, 100), "B": np.random.randint(1, 7, 100)} ) A B Success 0 6 4 Yes 1 6 2 Yes 2 1 1 Yes 3 1 2 Yes .. .. .. ... 95 4 4 No 96 2 1 No 97 2 6 No 98 2 3 No 99 2 1 No </code></pre> I would like to plot a violin plot for each data column. It works with : <pre><code>import seaborn as sns sns.violinplot(data=df[["A", "B"]], inner="quartile", bw=.15) </code></pre> But now, I would like to split the violin according to the <code>Success</code> column. But, using <code>hue="Success"</code> I got an error with <code>Cannot use 'hue' without 'x' or 'y'</code>. Thus how can I do to plot the violin plot by splitting according to "Success" column ?

41,575,149

2

0

null

2017-01-10 16:11:24.827 UTC

10

2017-07-21 08:36:10.083 UTC

null

1,421,907

null

1

10

python|seaborn

15,108

If understand your question correctly, you need to reshape your dataframe to have it in long format: <pre><code>df = pd.melt(df, value_vars=['A', 'B'], id_vars='Success') sns.violinplot(x='variable', y='value', hue='Success', data=df) plt.show() </code></pre> <a href="https://i.stack.imgur.com/IXNT9.png" rel="noreferrer"><img src="https://i.stack.imgur.com/IXNT9.png" alt="enter image description here"></a>

69,696,321

IntelliJ - Invalid source release: 17

I've created a new Java project in IntelliJ with Gradle that uses Java 17. When running my app it has the error <code>Cause: error: invalid source release: 17</code>. My Settings I've installed <code>openjdk-17</code> through <code>IntelliJ</code> and set it as my <code>Project SDK</code>. The <code>Project language level</code> has been set to <code>17 - Sealed types, always-strict floating-point semantics</code>. <a href="https://i.stack.imgur.com/h6OBn.png" rel="noreferrer"><img src="https://i.stack.imgur.com/h6OBn.png" alt="enter image description here" /></a> In <code>Modules -> Sources</code> I've set the <code>Language level</code> to <code>Project default (17 - Sealed types, always strict floating-point semantics)</code>. <a href="https://i.stack.imgur.com/WxHWG.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WxHWG.png" alt="modules->sources" /></a> In <code>Modules -> Dependencies</code> I've set the <code>Module SDK</code> to <code>Project SDK openjdk-17</code>. <a href="https://i.stack.imgur.com/0DMAk.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0DMAk.png" alt="modules->dependencies" /></a> In <code>Settings -> Build, Execution, Deployment -> Compiler -> Java Compiler</code> I've set the <code>Project bytecode version</code> to <code>17</code>. <a href="https://i.stack.imgur.com/jZxak.png" rel="noreferrer"><img src="https://i.stack.imgur.com/jZxak.png" alt="enter image description here" /></a> Gradle <pre><code>plugins { id 'org.springframework.boot' version '2.5.6' id 'io.spring.dependency-management' version '1.0.11.RELEASE' id 'java' } group = 'com.app' version = '0.0.1-SNAPSHOT' sourceCompatibility = '17' repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-web' implementation 'org.springframework.boot:spring-boot-starter-websocket' testImplementation 'org.springframework.boot:spring-boot-starter-test' implementation 'com.fasterxml.jackson.core:jackson-core:2.13.0' implementation 'com.fasterxml.jackson.core:jackson-databind:2.13.0' } test { useJUnitPlatform() } </code></pre> I've looked at all of the answers <a href="https://stackoverflow.com/questions/46280859/intellij-idea-error-java-invalid-source-release-1-9">here</a> but I can't seem to fix this. I must be missing something but I can't find it. I've not had any problems using Java 8 or 11. How do I resolve this?

70,215,091

10

0

null

2021-10-24 11:32:37.483 UTC

4

2022-08-24 20:02:30.053 UTC

null

2,934,534

null

1

76

java|gradle|intellij-idea|java-17

60,758

In intellij just set Gradle JVM to Java version 17. "File -> Settings.. -> Build, Execution, Deployment -> Build Tools -> Gradle" there select your project and set Gradle JVM to your java 17.0.1

23,116,330

MongoDB SELECT COUNT GROUP BY

I am playing around with MongoDB trying to figure out how to do a simple <pre><code>SELECT province, COUNT(*) FROM contest GROUP BY province </code></pre> But I can't seem to figure it out using the aggregate function. I can do it using some really weird group syntax <pre><code>db.user.group({ "key": { "province": true }, "initial": { "count": 0 }, "reduce": function(obj, prev) { if (true != null) if (true instanceof Array) prev.count += true.length; else prev.count++; } }); </code></pre> But is there an easier/faster way using the aggregate function?

23,116,396

9

0

null

2014-04-16 17:34:52.713 UTC

64

2021-07-13 16:25:38.867 UTC

2020-04-13 15:38:23.5 UTC

null

1,108,305

null

150,062

null

1

296

mongodb|group-by|aggregation-framework

388,132

This would be the easier way to do it using <a href="http://docs.mongodb.org/manual/reference/method/db.collection.aggregate/"><code>aggregate</code></a>: <pre class="lang-js prettyprint-override"><code>db.contest.aggregate([ {"$group" : {_id:"$province", count:{$sum:1}}} ]) </code></pre>

20,219,796

bootstrap collapse menu disappears when resizing screen

I used bootstrap menu for my app. It looks like this: <img src="https://i.stack.imgur.com/uTGot.png" alt="menu ok"> but when I change window size to smaller, it disappears - looks like this: <img src="https://i.stack.imgur.com/Pbwt4.png" alt="menu disappears"> It disappears when its about ~965px wide (so its probably 979px). I tried <a href="https://stackoverflow.com/questions/15825442/fixed-bootstrap-navbar-disappearing-with-768-x-1024-view">this solution</a>, didnt work. May be I'm mixing bootstrap 2 and 3? This is my menu code: <pre><code><div class="navbar navbar-inverse navbar-fixed-top"> <div class="navbar-inner"> <div class="container"> <a class="brand" href="/">Digrin</a> <div class="nav-collapse collapse"> <ul class="nav"> {{ request.path }} <li{% block nav_stocks %}{% endblock %}><a href="/stocks/">Stocks</a></li> <li{% block nav_mystocks %}{% endblock %}> <a href="/stocks/mystocks">My Portfolio</a></li> <li{% block nav_watchstocks %}{% endblock %}> <a href="/stocks/watchstocks">Watcher</a></li> {% if not user.is_authenticated %} <li class="active"><a href="/accounts/login/?next=/stocks/">Login</a></li> <li><a href="/accounts/register/">Register</a></li> {% else %} <ul class="nav"> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#"> {{ user.username }} </a> <ul class="dropdown-menu"> <li><a href="/accounts/password/change/">Change password</a></li> {% if user.is_staff %}<li><a href="/admin">Admin</a></li>{% endif %} <li><a href="/accounts/logout/?next=/stocks/">Logout</a></li> </ul> </li> </ul> {% endif %} </ul> </div> </div> </div> </div> </code></pre> includes: <pre><code><meta name="viewport" content="width=device-width, initial-scale=1.0">  <link href="{% static "css/bootstrap.css" %}" rel="stylesheet"> <style> body { padding-top: 60px; /* 60px to make the container go all the way to the bottom of the topbar */ } </style> <link href="{% static "css/bootstrap-responsive.css" %}" rel="stylesheet">   <script src="{% static "js/jquery-1.8.1.min.js" %}" type="text/javascript"></script> <script src="{% static "js/bootstrap.min.js" %}" type="text/javascript"></script> </code></pre> And <a href="http://www.digrin.com" rel="noreferrer">site</a> (far from finished) If I zoom in, menu disappears as well.

20,221,317

1

0

null

2013-11-26 14:28:06.79 UTC

2

2013-12-11 01:32:05.647 UTC

2017-05-23 12:34:24.807 UTC

null

-1

null

2,026,022

null

1

16

css|twitter-bootstrap|collapse

44,825

If you do not want your navbar links to be collapsed on smaller devices, then you need to remove the <code><div class="nav-collapse collapse"></code> element. The basic structure should look something like this.... <pre><code><div class="navbar navbar-inverse navbar-fixed-top"> <div class="navbar-inner"> <a class="brand" href="#">Title</a> <ul class="nav"> <li class="active"><a href="#">Home</a></li> <li><a href="#">Link</a></li> <li><a href="#">Link</a></li> </ul> </div> </div> </code></pre> If you want to keep the responsive functionality, then add the below code to within you <code>container</code> div. This will give you a button to toggle the collapsed menu on smaller devices. <pre><code> <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"> </a> </code></pre> So then the end result would look something like this. <pre><code><div class="navbar navbar-inverse navbar-fixed-top"> <div class="navbar-inner"> <div class="container">  <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"> </a>  <a class="brand" href="#">Project name</a>  <div class="nav-collapse collapse">  </div> </div> </div> </div> </code></pre> Also, you do not have to nest a <code><ul class="nav"></code> element within a <code><ul class="nav"></code> element for the dropdown menus. The correct structure for you navigation items should look like this. <pre><code><ul class="nav"> <li class="active"><a href="#">Home</a></li> <li><a href="#">Link</a></li> <li><a href="#">Link</a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"> Test </a> <ul class="dropdown-menu"> ... </ul> </li> </ul> </code></pre>

63,967,346

Install vue 3.0 in laravel

Is there a way to install vue 3.0 to Laravel 8? When I run <pre><code>npm install vue@next </code></pre> It started installing Vue 3.0, but for some reason it also began installing <code>vue-template-compiler</code> v2.6.12. The following appears: <blockquote> <pre><code> Additional dependencies must be installed. This will only take a moment. Running: npm install vue-template-compiler --save-dev --production=false </code></pre> </blockquote> And then when I run <pre><code>npm run dev </code></pre> The following error appears: <blockquote> <ul> <li>vue@3.0.0 (C:\wamp64\www\vue-sample\node_modules\vue\index.js)</li> <li>vue-template-compiler@2.6.12 (C:\wamp64\www\vue-sample\node_modules\vue-template-compiler\package.json)</li> </ul> This may cause things to work incorrectly. Make sure to use the same version for both. If you are using vue-loader@>=10.0, simply update vue-template-compiler. If you are using vue-loader@<10.0 or vueify, re-installing vue-loader/vueify should bump vue-template-compiler to the latest. @ ./resources/js/app.js 19:35-79 @ multi ./resources/js/app.js ./resources/sass/app.scss </blockquote> I am completely new in Vue. What should I do?

63,968,220

2

0

null

2020-09-19 09:40:37.403 UTC

9

2022-05-13 11:06:46.823 UTC

2021-11-24 08:17:08.7 UTC

null

8,172,857

null

3,263,252

null

1

23

laravel|vue.js|webpack|vue-component|vuejs3

23,180

Update 2022 <img src="https://i.stack.imgur.com/r3F27.png" alt="enter image description here" /> For those who prefer <a href="https://vitejs.dev/" rel="nofollow noreferrer">Vite</a>, there's a tool called <a href="https://laravel-vite.dev/" rel="nofollow noreferrer">Laravel Vite</a> which is a project based on PHP package, Vite plugin and preset, you could install it as follows : <pre><code>npx @preset/cli apply laravel:vite </code></pre> This removes the default config in the Laravel fresh project. For further details please check the different section in official <a href="https://laravel-vite.dev/" rel="nofollow noreferrer">docs</a> <hr /> Update October 2020 Now with <a href="https://github.com/JeffreyWay/laravel-mix/blob/master/UPGRADE.md" rel="nofollow noreferrer"><code>laravel-mix v6</code></a> you could run Vue 3 code in Laravel App: 1. Installation : <pre><code>npm i -D laravel-mix@next vue@next @vue/compiler-sfc vue-loader@next </code></pre> then <pre><code>npm i </code></pre> before doing that try to remove the following dependencies from <code>package.json</code> which some of them are added by <code>php artisan ui vue</code> : <ul> <li><code>vue</code></li> <li><code>vue-template-compiler</code></li> <li><code>laravel-mix</code></li> </ul> 2. Config: in the <code>package.json</code> change the scripts to the following ones: <pre><code>"scripts": { "development": "mix", "watch": "mix watch", "watch-poll": "mix watch -- --watch-options-poll=1000", "hot": "mix watch --hot", "production": "mix --production" } </code></pre> <code>webpack.mix.js</code> should contain : <pre><code>const mix = require('laravel-mix'); mix.js('resources/js/app.js', 'public/js').vue(); </code></pre> The minimum content of <code>resources/js/app.js</code> <pre><code>import { createApp } from 'vue'; import App from './components/App.vue' createApp(App).mount("#app") </code></pre> In order to avoid this confusing steps clone this <a href="https://github.com/boussadjra/laravel-vue-3-starter" rel="nofollow noreferrer">REPOSITORY</a> and start coding. OLD ANSWER Laravel doesn't support vue 3 yet, but you could try out <a href="https://www.npmjs.com/package/laravel-mix-vue3" rel="nofollow noreferrer">laravel-mix-vue3</a> : Installation : <pre><code>npm install @types/webpack-env @vue/compiler-sfc vue-loader@next laravel-mix-vue3 --save-dev </code></pre> Usage : Configure in <code>webpack.mix.js</code> as follows : <pre><code>const mix = require("laravel-mix"); require("laravel-mix-vue3"); mix.vue3("resources/js/app.js", "public/js"); </code></pre>

53,448,450

How to resolve error "Failed to resolve: org.jetbrains.kotlin:kotlin-stdlib-jre7..." when building in Android Studio

I've created a new project by checking the "include kotlin" box in Android Studio 3 and out of the box I get an error while compiling <pre><code>"Failed to resolve: org.jetbrains.kotlin:kotlin-stdlib-jre7..." </code></pre> I have made sure all plugins are up to date and that the Android SDK is properly installed. How can I solve for this error?

53,448,758

2

0

null

2018-11-23 14:24:37.95 UTC

15

2020-05-12 15:03:38.413 UTC

null

63,550

null

5,175,097

null

1

86

kotlin

71,823

<code>kotlin-stdlib-jre[7/8]</code> was deprecated a while ago, and has since been removed. The deprecation note was kept until <a href="https://mvnrepository.com/artifact/org.jetbrains.kotlin/kotlin-stdlib-jre7" rel="noreferrer">1.2.71</a>, which was the last version to release those artifacts. The official deprecation notice can be found <a href="https://kotlinlang.org/docs/reference/whatsnew12.html#standard-library" rel="noreferrer">here</a>. Using any of the deprecated versions (before it was removed) should also produce a warning in (at least) Android Studio and IntelliJ. Use <a href="https://mvnrepository.com/artifact/org.jetbrains.kotlin/kotlin-stdlib-jdk7" rel="noreferrer"><code>kotlin-stdlib-jdk7</code></a> instead. It's the same dependency as <code>kotlin-stdlib-jre7</code> (except newer), but it was re-named to <code>kotlin-stdlib-jdk</code>. <code>kotlin-stdlib-jre</code> is now no longer maintained as a separate dependency. Both IntelliJ and Android Studio currently generate new projects using <code>kotlin-stdlib-jre7</code>; this likely is a bug. They have probably not updated the project generators. Therefore, you have to manually replace the dependencies with working ones until they fix this. This is dependent on the Kotlin plugin. Update it if you haven't. I haven't checked whether it's been patched or not - if it has, that only fixes the creation of new projects. For updating from older versions, the rest of the answer still applies You naturally have to do this if you're on 1.2.71 or lower, and you're upgrading to 1.3.0 or higher. These are the new valid dependencies as of Kotlin 1.3.0: <pre><code>implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version" </code></pre> Where <code>$kotlinVersion</code> is either a variable containing the version, or a hard-coded version (i.e. <code>1.3.0</code>) <hr> Alternatively, you can use <a href="https://mvnrepository.com/artifact/org.jetbrains.kotlin/kotlin-stdlib" rel="noreferrer">the "plain" stdlib</a> (<code>kotlin-stdlib</code>) instead of the JDK-specific versions. But you have to change your dependency either way, so I recommend you go with <code>kotlin-stdlib-jdk7</code>, or if you plan on using Java 8, <code>kotlin-stdlib-jdk8</code> The newest versions of the dependencies can also be found <a href="https://mvnrepository.com/artifact/org.jetbrains.kotlin/kotlin-stdlib-jdk8" rel="noreferrer">here</a>. jdk7, jdk8, and the version-unspecific stdlib all follow the same versions (as per this edit - this could change in the future, but there'll likely be notices before that change happens), so whether you check jdk8, jdk7 or the regular one, all the versions should be universally available across the stdlib artifacts. <h1>Note for other build systems</h1> The same actual solution applies to other build systems as well, but the code is different. As there are a lot of build systems, I'm not going to include all of them, but the point is changing the artifact from <code>kotlin-stdlib-jre[num]</code> to <code>kotlin-stdlib-jdk[num]</code> (without brackets of course). Or, as mentioned earlier, <code>kotlin-stdlib</code>. Independently of the build system, this bases itself on access to Maven Central and similar repositories. If your build system doesn't support this, and/or breaks with Maven-style conventions and repositories, you'll have to find what works for your build system. <h1>TL;DR:</h1> Use <code>org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version</code> or <code>org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version</code> (depending on which version you originally used) instead.

19,017,555

SASS Math Calculation

Trying to create a responsive grid of videos. Instead of using different %'s for each media query, I was hoping to use a standard SASS formula that calculates based on 100% width, however not sure if SASS can do this. The 40 in the below formula, takes into account 2 x 20px fixed margins (i.e this would be a 3-column grid). Ideal formula: <pre><code>ul.videos { li { width: ((100% / 3) - 40); } } </code></pre> Any way that CSS/SASS can handle this? Would prefer not to use JS if possible.

19,017,700

3

0

null

2013-09-26 00:51:04.227 UTC

8

2018-03-02 18:45:06.92 UTC

null

1,309,527

null

1

27

css|responsive-design|sass

80,684

Unfortunately you can't subtract 40px from 33%. SASS generates a standard CSS file to be interpreted by the browser, and at build time SASS doesn't know the dimensions of the browser. However, you should be able to achieve the desired effect by using CSS margins, eg <pre><code>ul.videos { li { width: (100% / 3); div { margin: 0 20px; } } } </code></pre>

26,715,634

Variables in nested Foreach-Object and Where-Object

I'm wondering how to work with nested Forach-Object, Where-Object and other Cmdlets in Powershell. For example this code: <pre><code>$obj1 | Foreach-Object { $obj2 | Where-Object { $_ .... } } </code></pre> So in the code block of Foreach-Object I use the elements of <code>$obj1</code> as <code>$_</code>. But the same happenn in the code block of Where-Object with <code>$obj2</code>. So how can I access both objects elements in the Where-Object code block? I would have to do <code>$_.Arg1 -eq $_.Arg1</code> but this makes no sense.

26,715,697

3

0

null

2014-11-03 13:44:38.077 UTC

4

2021-02-17 00:29:33.35 UTC

null

3,898,725

null

1

41

powershell

41,752

afaik, You'll need to keep a reference to the outer loop by putting it in a local variable. <pre><code>$obj1 | Foreach-Object { $myobj1 = $_ $obj2 | Where-Object { $_ .... } } </code></pre>

43,931,986

How to upgrade Angular CLI to the latest version

Using <code>ng --version</code> I got: <blockquote> @angular/cli: 1.0.0 </blockquote> which is not the latest release available. Since I have Angular CLI globally installed on my system, in order to upgrade it I tried: <code>npm update angular-cli -g</code> But it does not work, because it stays to 1.0.0 version.

43,931,987

10

0

null

2017-05-12 07:35:19.97 UTC

196

2022-08-09 08:30:30.233 UTC

null

3,497,671

null

1

102

angular|angular-cli

878,607

After reading some issues reported on the GitHub repository, I found the solution. In order to update the angular-cli package installed globally in your system, you need to run: <pre><code>npm uninstall -g @angular/cli npm install -g @angular/cli@latest </code></pre> Depending on your system, you may need to prefix the above commands with <code>sudo</code>. Also, most likely you want to also update your local project version, because inside your project directory it will be selected with higher priority than the global one: <pre><code>rm -rf node_modules npm uninstall --save-dev @angular/cli npm install --save-dev @angular/cli@latest npm install </code></pre> thanks grizzm0 for pointing this out on <a href="https://github.com/angular/angular-cli/issues/4391#issuecomment-277199786" rel="noreferrer">GitHub</a>. After updating your CLI, you probably want to <a href="https://update.angular.io/" rel="noreferrer">update your Angular version</a> too. Note: if you are updating to Angular CLI 6+ from an older version, you might need to read <a href="https://stackoverflow.com/questions/51926816/ng-build-prod-does-not-minify-uglify-remove-comments-since-angular-cli-6/51926817">this</a>. Edit: In addition, if you were still on a 1.x version of the cli, you need to convert your <code>angular-cli.json</code> to <code>angular.json</code>, which you can do with the following command (check <a href="https://stackoverflow.com/questions/50232874/angular-6-migration-angular-cli-json-to-angular-json">this</a> for more details): <pre><code>ng update @angular/cli --from=1.7.4 --migrate-only </code></pre>

21,912,197

Setting Different error bar colors in bar plot in matplotlib

Following <a href="https://stackoverflow.com/questions/18973404/settting-different-bar-color-in-matplotlib-python/18973430#18973430">Setting Different Bar color in matplotlib Python</a> I would like to change the error bar colors. I have figured out a way after a number of attempts: <pre><code>a = plt.gca() b = a.bar(range(4), [2]*4, yerr=range(4)) c = a.get_children()[8] c.set_color(['r','r','b','r']) </code></pre> Is there any better way? Certainly <code>a.get_children()[8]</code> is not a general solution at all. <img src="https://i.stack.imgur.com/YXGrn.png" alt="enter image description here">

21,915,157

2

0

null

2014-02-20 15:26:56.213 UTC

4

2017-10-06 05:41:26.323 UTC

null

6,885,902

null

691,867

null

1

28

python|matplotlib

44,275

If you just want to set them to a single color, use the <code>error_kw</code> kwarg (expected to be a dict of keyword arguments that's passed on to <code>ax.errorbar</code>). Also, just so you know, you can pass a sequence of facecolors directly to <code>bar</code>, though this won't change the errorbar color. As a quick example: <pre><code>import matplotlib.pyplot as plt fig, ax = plt.subplots() ax.bar(range(4), [2] * 4, yerr=range(1, 5), alpha=0.5, color=['red', 'green', 'blue', 'cyan', 'magenta'], error_kw=dict(ecolor='gray', lw=2, capsize=5, capthick=2)) ax.margins(0.05) plt.show() </code></pre> <img src="https://i.stack.imgur.com/ULoxE.png" alt="enter image description here"> However, if you want the errorbars to be different colors, you'll either need to plot them individually or modify them afterwards. If you use the latter option, the capline colors actually can't be changed individually (note that they're not changed in @falsetru's example either). For example: <pre><code>import matplotlib.pyplot as plt fig, ax = plt.subplots() colors = ['red', 'green', 'blue', 'cyan', 'magenta'] container = ax.bar(range(4), [2] * 4, yerr=range(1, 5), alpha=0.5, color=colors, error_kw=dict(lw=2, capsize=5, capthick=2)) ax.margins(0.05) connector, caplines, (vertical_lines,) = container.errorbar.lines vertical_lines.set_color(colors) plt.show() </code></pre> <img src="https://i.stack.imgur.com/uLDh8.png" alt="enter image description here"> The <code>caplines</code> object in the answer above is a tuple of two <code>Line2D</code>s: One line for all of the top caps, and one line for all of the bottom caps. There's not way to change the colors of the caps individually (it's easy to set them all to the same color) without removing that artist and creating a <code>LineCollection</code> in its place. Therefore, you're better off just plotting the errorbars individually in this case. E.g. <pre><code>import matplotlib.pyplot as plt x, height, error = range(4), [2] * 4, range(1,5) colors = ['red', 'green', 'blue', 'cyan', 'magenta'] fig, ax = plt.subplots() ax.bar(x, height, alpha=0.5, color=colors) ax.margins(0.05) for pos, y, err, color in zip(x, height, error, colors): ax.errorbar(pos + 0.4, y, err, lw=2, capsize=5, capthick=2, color=color) plt.show() </code></pre> <img src="https://i.stack.imgur.com/2z1kj.png" alt="enter image description here">

21,464,918

Django bulk update with string replace

I am trying to update and modify a string field Django's ORM. The equivalent SQL to do this is: <pre><code>UPDATE example_table SET string_field = REPLACE(string_field, 'old text', 'new text'); </code></pre> With that query, I expect <code>old text</code> and <code>old text more text</code> to be replaced with <code>new text</code> and <code>new text more text</code> respectively, for all the entries in the <code>string_field</code> column. <a href="https://docs.djangoproject.com/en/dev/ref/models/querysets/#update" rel="noreferrer">Bulk update()</a> seems promising, but doesn't allow me to modify only part of the field, and <a href="https://docs.djangoproject.com/en/dev/ref/models/expressions/#f-expressions" rel="noreferrer">F() expressions</a> only implement numeric changes, not string replace. I also looked at using <a href="https://docs.djangoproject.com/en/dev/topics/db/sql/#executing-custom-sql-directly" rel="noreferrer">raw queries</a> to run the above SQL, but that seems like a sideways hack (especially since F() exists to do the same functionality on numbers), and I couldn't get them to actually execute. I ended up with this, but it seems a shame to execute all the extra queries when I know there's a one line SQL statement to do it. <pre><code>for entry in ExampleModel.objects.all(): entry.string_field = entry.string_field.replace('old text', 'new text', 1) entry.save() </code></pre> Does this feature not exist in Django's ORM for strings yet? Is there something I overlooked in the docs? Related SO questions: <ul> <li><a href="https://stackoverflow.com/questions/15319875/generate-update-query-using-django-orm">generate update query using django orm</a></li> <li><a href="https://stackoverflow.com/questions/12030143/sql-statement-to-remove-part-of-a-string">SQL statement to remove part of a string</a></li> </ul>

41,597,477

4

1

null

2014-01-30 18:42:13.007 UTC

8

2021-06-13 13:17:37.593 UTC

2017-05-23 10:30:49.21 UTC

null

-1

null

2,475,775

null

1

24

python|django|django-orm

12,591

Tested with django 1.9 <pre><code>from django.db.models import F, Func, Value ExampleModel.objects.filter(<condition>).update( string_field=Func( F('string_field'), Value('old text'), Value('new text'), function='replace', ) ) </code></pre> UPDATE Django 2.1 <a href="https://docs.djangoproject.com/en/2.2/ref/models/database-functions/#replace" rel="nofollow noreferrer">https://docs.djangoproject.com/en/2.2/ref/models/database-functions/#replace</a> <pre><code>from django.db.models import Value from django.db.models.functions import Replace ExampleModel.objects.filter(<condition>).update( string_field=Replace('string_field', Value('old text'), Value('new text')) ) </code></pre>

21,622,193

Python-3.2 coroutine: AttributeError: 'generator' object has no attribute 'next'

Quoting from Python Essential Reference, by David Beazley, page 20: <blockquote> Normally, functions operate on a single set of input arguments. However, a function can also be written to operate as a task that processes a sequence of inputs sent to it. This type of function is known as a coroutine and is created by using the <code>yield</code> statement as an expression (yield) as shown in this example: </blockquote> <pre><code>def print_matches(matchtext): print "Looking for", matchtext while True: line = (yield) # Get a line of text if matchtext in line: print line </code></pre> <blockquote> To use this function, you first call it, advance it to the first (yield), and then start sending data to it using <code>send()</code>. For example: </blockquote> <pre><code>>>> matcher = print_matches("python") >>> matcher.next() # Advance to the first (yield) Looking for python >>> matcher.send("Hello World") >>> matcher.send("python is cool") python is cool >>> matcher.send("yow!") >>> matcher.close() # Done with the matcher function call </code></pre> Based on that information, I wrote this code: <pre><code>#!/usr/bin/python3.2 import sys def match_text(pattern): line = (yield) if pattern in line: print(line) x = match_text('apple') x.next() for line in input('>>>> '): if x.send(line): print(line) x.close() </code></pre> But I get an error message like: <pre><code>Traceback (most recent call last): File "xxx", line 9, in <module> matcher.next() # Advance to the first (yield) AttributeError: 'generator' object has no attribute 'next' </code></pre> Why doesn't this code (or the code from the book, for that matter) work in Python 3.2? It seems that what is supposed to be a coroutine, is treated as a generator instead - why? What is going on here?

21,622,696

3

1

null

2014-02-07 07:54:13.93 UTC

5

2022-07-19 16:48:54.593 UTC

null

523,612

user621819

null

1

42

python|python-3.x

67,504

You're getting thrown off by the error message; type-wise, Python doesn't make a distinction - you can <code>.send</code> to anything that uses <code>yield</code>, even if it doesn't do anything with the sent value internally. In 3.x, there is no longer a <code>.next</code> method attached to these; instead, use the built-in free function <code>next</code>: <pre class="lang-py prettyprint-override"><code>next(matcher) </code></pre>

9,216,185

Nodejs Passport display username

In nodeJS I am using the passport module for authentication. I would like to show the username of the currently logged in user. I tried the following code: <pre><code>passport.displayName </code></pre> and <pre><code>Localstrategy.username </code></pre> And for more info please also see: <a href="http://passportjs.org/docs/profile">http://passportjs.org/docs/profile</a> But that is not working. Any suggestions? Thanks

9,218,855

5

0

null

2012-02-09 17:57:36.43 UTC

11

2019-01-24 13:07:32.96 UTC

2015-06-24 14:16:57.343 UTC

null

2,297,345

null

1,177,899

null

1

28

node.js|passport.js

42,541

The user (as supplied by the verify callback), is set as a property on the request at <code>req.user</code>. Any properties of the user can be accessed through that object, in your case <code>req.user.username</code> and <code>req.user.displayName</code>. If you're using Express, and want to expose the username as a variable within a template, that can be done when rendering: <pre><code>app.get('/hello', function(req, res) { res.render('index.jade', { username: req.user.username }); }); </code></pre>

9,022,656

TypeError: unhashable type: 'numpy.ndarray'

From a text file containing three columns of data I want to be able to just take a <code>slice</code> of data from all three columns where the values in the first column are equal to the values defined in <code>above</code>. I then want to put the slice of data into a new array called <code>slice</code> (I am using Python 2.7) <pre><code>above = range(18000, 18060, 5) data = np.loadtxt(open('data.txt'), delimiter=None) energies = (np.hsplit(data, 3))[0] slice = set(energies)&set(above) </code></pre> The above comes back with: <pre><code>Traceback (most recent call last): File "<pyshell#27>", line 1, in <module> set(energies)&set(above) TypeError: unhashable type: 'numpy.ndarray </code></pre>

9,022,915

2

0

null

2012-01-26 17:39:55.083 UTC

5

2018-12-26 09:41:40.513 UTC

2015-09-30 15:41:13.453 UTC

null

2,062,965

null

1,171,835

null

1

69

python|numpy

384,337

Your variable <code>energies</code> probably has the wrong shape: <pre><code>>>> from numpy import array >>> set([1,2,3]) & set(range(2, 10)) set([2, 3]) >>> set(array([1,2,3])) & set(range(2,10)) set([2, 3]) >>> set(array([[1,2,3],])) & set(range(2,10)) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: unhashable type: 'numpy.ndarray' </code></pre> And that's what happens if you read columnar data using your approach: <pre><code>>>> data array([[ 1., 2., 3.], [ 3., 4., 5.], [ 5., 6., 7.], [ 8., 9., 10.]]) >>> hsplit(data,3)[0] array([[ 1.], [ 3.], [ 5.], [ 8.]]) </code></pre> Probably you can simply use <pre><code>>>> data[:,0] array([ 1., 3., 5., 8.]) </code></pre> instead. (P.S. Your code looks like it's undecided about whether it's <code>data</code> or <code>elementdata</code>. I've assumed it's simply a typo.)

33,993,461

PHP - remove all non-numeric characters from a string

What is the best way for me to do this? Should I use regex or is there another in-built PHP function I can use? For example, I'd want: <code>12 months</code> to become <code>12</code>. <code>Every 6 months</code> to become <code>6</code>, <code>1M</code> to become <code>1</code>, etc.

33,993,530

2

1

null

2015-11-30 07:29:00.13 UTC

18

2022-01-12 00:44:46.013 UTC

null

2,370,483

null

2,884,981

null

1

107

php|string

160,600

You can use <a href="http://php.net/manual/en/function.preg-replace.php" rel="noreferrer">preg_replace</a> in this case; <pre><code>$res = preg_replace("/[^0-9]/", "", "Every 6 Months" ); </code></pre> $res return 6 in this case. If want also to include decimal separator or thousand separator check this example: <pre><code>$res = preg_replace("/[^0-9.]/", "", "$ 123.099"); </code></pre> $res returns "123.099" in this case Include period as decimal separator or thousand separator: "/[^0-9.]/" Include coma as decimal separator or thousand separator: "/[^0-9,]/" Include period and coma as decimal separator and thousand separator: "/[^0-9,.]/"

22,849,661

How to make Task.WaitAll() to break if any exception happened?

I want to make Task.WaitAll() to break out if any of the running tasks throws an exception, so that I don't have to wait for 60 seconds to finish. How do I achieve such behavior? If WaitAll() cannot achieve that, is there any other c# feature or workaround? <pre><code>Task task1 = Task.Run(() => throw new InvalidOperationException()); Task task2 = ... ... try { Task.WaitAll(new Task[]{task1, task2, ...}, TimeSpan.FromSeconds(60)); } catch (AggregateException) { // If any exception thrown on any of the tasks, break out immediately instead of wait all the way to 60 seconds. } </code></pre>

22,851,991

4

1

null

2014-04-03 21:49:26.323 UTC

5

2019-12-04 17:01:31.15 UTC

2014-04-04 01:36:53.63 UTC

null

1,768,303

null

926,958

null

1

33

c#|task-parallel-library|task|async-await

9,247

The following should do it without altering the code of the original tasks (untested): <pre><code>static bool WaitAll(Task[] tasks, int timeout, CancellationToken token) { var cts = CancellationTokenSource.CreateLinkedTokenSource(token); var proxyTasks = tasks.Select(task => task.ContinueWith(t => { if (t.IsFaulted) cts.Cancel(); return t; }, cts.Token, TaskContinuationOptions.ExecuteSynchronously, TaskScheduler.Current).Unwrap()); return Task.WaitAll(proxyTasks.ToArray(), timeout, cts.Token); } </code></pre> Note it only tracks faulted tasks (those which threw). If you need to track cancelled tasks as well, make this change: <pre><code>if (t.IsFaulted || t.IsCancelled) cts.Cancel(); </code></pre> Updated, waiting on the task proxies is redundant here, as pointed out by @svick in the comments. He proposes an improved version: <a href="https://gist.github.com/svick/9992598" rel="nofollow noreferrer">https://gist.github.com/svick/9992598</a>.

7,641,130

Center text in table cell

I can't seem to find the answer to my issue. I have a table with two rows and two columns (like the code shown below), how do I center align the text in specific cells. I would like to center align the text in one or two of the cells - not all the cells. <pre class="lang-html prettyprint-override"><code><div style="text-align: center;"> <table style="margin: 0px auto;" border="0"> <tbody> <tr> <td>Cell 1</td> <td>Cell 2</td> </tr> <tr> <td>Cell 3</td> <td>Cell 4</td> </tr> </tbody> </table> </div> </code></pre>

7,641,142

2

0

null

2011-10-03 21:57:41.237 UTC

1

2017-07-10 17:44:59.747 UTC

null

4,370,109

null

973,738

null

1

36

html|html-table|alignment|center

159,309

I would recommend using CSS for this. You should create a CSS rule to enforce the centering, for example: <pre><code>.ui-helper-center { text-align: center; } </code></pre> And then add the <code>ui-helper-center</code> class to the table cells for which you wish to control the alignment: <pre><code><td class="ui-helper-center">Content</td> </code></pre> <hr> EDIT: Since this answer was accepted, I felt obligated to edit out the parts that caused a flame-war in the comments, and to not promote poor and outdated practices. See <a href="https://stackoverflow.com/questions/7641130/center-text-in-table-cell/7641141#7641141">Gabe's answer</a> for how to include the CSS rule into your page.

31,414,106

Get list of Excel files in a folder using VBA

I need to get the names of all the Excel files in a folder and then make changes to each file. I've gotten the "make changes" part sorted out. Is there a way to get a list of the <code>.xlsx</code> files in one folder, say <code>D:\Personal</code> and store it in a String Array. I then need to iterate through the list of files and run a macro on each of the files which I figured I can do using: <pre><code>Filepath = "D:\Personal\" For Each i in FileArray Workbooks.Open(Filepath+i) Next </code></pre> I had a look at <a href="https://stackoverflow.com/questions/10380312/loop-through-files-in-a-folder-using-vba">this</a>, however, I wasn't able to open the files cause it stored the names in <code>Variant</code> format. In short, how can I use VBA to get a list of Excel filenames in a specific folder?

31,428,399

6

4

null

2015-07-14 18:07:03.313 UTC

6

2020-02-13 17:50:05.44 UTC

2018-07-09 19:34:03.733 UTC

null

-1

null

5,020,807

null

1

31

vba|excel|excel-2010

235,785

Ok well this might work for you, a function that takes a path and returns an array of file names in the folder. You could use an if statement to get just the excel files when looping through the array. <pre><code>Function listfiles(ByVal sPath As String) Dim vaArray As Variant Dim i As Integer Dim oFile As Object Dim oFSO As Object Dim oFolder As Object Dim oFiles As Object Set oFSO = CreateObject("Scripting.FileSystemObject") Set oFolder = oFSO.GetFolder(sPath) Set oFiles = oFolder.Files If oFiles.Count = 0 Then Exit Function ReDim vaArray(1 To oFiles.Count) i = 1 For Each oFile In oFiles vaArray(i) = oFile.Name i = i + 1 Next listfiles = vaArray End Function </code></pre> It would be nice if we could just access the files in the files object by index number but that seems to be broken in VBA for whatever reason (bug?).

18,878,083

Can I use variables on an IPython notebook markup cell?

I have an IPython notebook and I would like to use one of my variables inside a markup cell. Is this even possible? If so, how do you do it?

19,328,029

4

0

null

2013-09-18 16:57:44.737 UTC

12

2019-10-20 05:26:32.053 UTC

null

6,873,133

null

2,748,066

null

1

77

jupyter-notebook|ipython

69,612

<strike>Currently, this is not possible, however there is a large discussion on this topic here <a href="https://github.com/ipython/ipython/pull/2592" rel="noreferrer">https://github.com/ipython/ipython/pull/2592</a>.</strike> The PR is currently closed, but a corresponding issue is opened <a href="https://github.com/ipython/ipython/issues/2958" rel="noreferrer">https://github.com/ipython/ipython/issues/2958</a> and marked as wishlist. <h2>Update</h2> In the meantime an IPython extension has appeared which allows to render python variables in markdown cells. This extension is part of the <a href="https://github.com/ipython-contrib/IPython-notebook-extensions" rel="noreferrer">IPython notebook extensions</a> and works with IPython 2.x and 3.x. For a detailed description see the <a href="https://github.com/ipython-contrib/IPython-notebook-extensions/wiki/python-markdown" rel="noreferrer">wiki page</a>.

19,101,361

iOS7 - Change UINavigationBar border color

Is it possible to change the grey border-bottom color of the UINavigationBar in iOS7? I already tried to remove to border, but this is not working: <pre><code>[[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]]; </code></pre> Thanks!

19,102,874

15

1

null

2013-09-30 18:37:36.337 UTC

21

2017-07-24 10:09:08.093 UTC

null

2,820,349

null

1

29

colors|border|uinavigationbar|ios7|xcode5

40,238

This will help you :) <pre><code>[self.navigationController.navigationBar.layer setBorderWidth:2.0];// Just to make sure its working [self.navigationController.navigationBar.layer setBorderColor:[[UIColor redColor] CGColor]]; </code></pre>

18,956,063

Memory usage of Docker containers

I am using Docker to run some containerized apps. I am interested in measuring how much resources they consume (as far as regarding CPU and Memory usage). Is there any way to measure the resources consumed by Docker containers like RAM & CPU usage? Thank you.

18,979,217

4

1

null

2013-09-23 09:38:52.5 UTC

3

2022-04-29 11:37:13.193 UTC

null

577,598

null

1

42

memory|resources|cpu-usage|measurement|docker

24,436

Update: See @Adrian Mouat's answer below as docker now supports <code>docker stats</code>! There isn't a way to do this that's built into docker in the current version. Future versions will support this via an api or plugin. <ul> <li><a href="https://github.com/dotcloud/docker/issues/36" rel="noreferrer">https://github.com/dotcloud/docker/issues/36</a></li> </ul> It does look like there's an lxc project that you should be able to use to track CPU and Memory. <ul> <li><a href="https://github.com/Soulou/acadock-live-lxc" rel="noreferrer">https://github.com/Soulou/acadock-live-lxc</a></li> </ul>

36,835,615

Difference between input-group and form-group

What is the difference in use between the css classes <code>input-group</code> and <code>form-group</code> in Bootstrap?

36,837,392

2

null

2016-04-25 08:38:06.8 UTC

22

2019-06-12 13:12:28.28 UTC

null

2,440

null

5,520,621

null

1

68

html|twitter-bootstrap|twitter-bootstrap-3

49,572

Input groups are extended Form Controls. Using input groups you can easily prepend and append text or buttons to the text-based inputs. For example, you can add the $ symbol, @ for a Twitter username, or anything else as required. Form groups are used to wrap labels and form controls in a div to get optimum spacing between the label and the control. Therefore, use both form-group and input-group as required. Do wrap your label and input in a form-group tag. If any of your input field required to prepended/appended with text/button, wrap the control with input-group. Below is the example, combining both of them. Hope this helps <div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-html lang-html prettyprint-override"><code><link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous"> <body> <div class="container-fluid justify-content-center"> <form role="form" class="pt-3"> <div class="form-group row"> <label for="inputfield1" class="col-sm-2 control-label">Generic input</label> <div class="col-sm-10"> <input type="text" class="form-control" id="inputfield1" placeholder="Generic input..." /> </div> </div> <div class="form-group row"> <label for="inputfield2" class="col-sm-2 control-label">Money value</label> <div class="input-group col-sm-10"> $ <input type="text" class="form-control" id="inputfield2" placeholder="Money value..." /> .00 </div> </div> <div class="form-group row"> <label for="inputfield3" class="col-sm-2 control-label">Username</label> <div class="input-group col-sm-10"> @ <input type="text" class="form-control" id="inputfield3" placeholder="Username..." /> </div> </div> </form> </div> </body></code></pre> </div> </div>

40,847,472

Why @Nonnull annotation checked at runtime?

I have a function with following signature <pre><code>public static String myFunction(@Nonnull String param) </code></pre> When I call it with param as null, I get the following exception: <pre><code>Caused by: java.lang.IllegalArgumentException: Argument for @Nonnull parameter 'param' of com/MyClass.myFunction must not be null at com.MyClass.$$$reportNull$$$0(MyClass.java) </code></pre> javax.annotation.Nonnull supposed not to be checked at runtime. Who actually throws the exception and why? P.S. I run Tomcat server in debug mode from IntelliJ IDEA 2016.3 with Oracle JDK 1.8.0_102

40,847,858

1

2

null

2016-11-28 15:06:47.16 UTC

10

2019-09-05 05:43:05.8 UTC

null

3,004,779

null

1

58

java|intellij-idea|non-nullable

14,288

When you compile your project in IntelliJ IDEA, it instruments the bytecode of compiled classes to add runtime checks for various flavors of <code>@Nonnull</code> annotations. This behavior is controlled by the option: Settings | Build, Execution, Deployment | Compiler | [x] Add runtime assertions for not-null-annotated methods and parameters. <a href="https://i.stack.imgur.com/lP8Rf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lP8Rf.png" alt="Screenshot of "Add runtime assertions for notnull-annotated methods and parameters."></a>

18,278,774

Search Git remote all branches for file contents

Is it possible to search all of my Git remote branches for specific file contents (not just a file, but contents within them)? My remotes are on GitHub, in case that helps...

18,279,145

2

0

null

2013-08-16 17:14:11.173 UTC

10

2019-06-20 17:06:24.347 UTC

2019-06-20 17:03:39.18 UTC

null

63,550

null

418,864

null

1

21

git|github

11,049

You can try this: <pre><code>git grep 'search-string' $(git ls-remote . 'refs/remotes/*' | cut -f 2) </code></pre> That will search all remote branches for <code>search-string</code>. Since the symbolic reference <code>HEAD</code> is mirrored, you may end up searching the same commit twice. Hopefully that's not an issue. If so, you can filter it out with: <pre><code>git grep 'search-string' \ $(git ls-remote . 'refs/remotes/*' | grep -v HEAD | cut -f 2) </code></pre> If you need to dig through your entire history, you can also try: <pre><code>git grep 'search-string' $(git rev-list --all) </code></pre>

1,053,396

Updating report parameters based on parameter selection? (SSRS)

I've created a report in SSRS with two report parameters. I'd like the second to update it's values based on the selection in the first. The first is a list of sales agents, and the second is a list of distributors. Each agent can have many distributors. So if the report user selects an agent, I'd like only their distributors to show in list for the second parameters. Obviously the parameter values will come from a query, but I don't know how to make it rebind the list once they select an agent.

1,053,407

4

0

null

2009-06-27 18:46:18.313 UTC

9

2016-09-14 16:54:53.893 UTC

null

3,347,858

null

1,365

null

1

11

sql-server-2005|reporting-services

35,916

This works automagically if you order your parameters and datasets correctly <ul> <li>First, set up a primary (report) dataset, then a dataset for each parameter dropdown. Code the <code>WHERE</code> clause in the datasets to make the dependencies correct across parameter variables</li> <li>Secondly, order your parameters in the Report | Parameters menu so that the first variable/parameter you want the user to fill in is at the top, and make the second dataset depend on that parameter. Follow this ordering through the parameters; the final parameter(s) should be the one(s) the actual report dataset depends on.</li> <li>Repeat for subsequent parameters</li> </ul> This will work if your <code>WHERE</code> clause in the second and subsequent datasets have variables that SSRS knows are populated from earlier parameters. As an example, I have three datasets from the venerable <code>pubs</code> database (sample in 2000). <code>pubslist</code> is used to populate the @p parameter, and looks like this: <pre><code> select pub_id, pub_name from publishers </code></pre> <code>titleslist</code> populates the @t parameter, and looks like this: <pre><code> select title_id, title from titles where pub_id = @p </code></pre> Finally, <code>reportdataset</code> looks like this: <pre><code> select title, price, ytd_sales from titles where title_id = @t </code></pre> The order of the parameters in the <code>Report | Report Parameters</code> menu is crucial; because the datasets must be executed in the order shown above, and the @t parameter is in a dataset that relies on the @p parameter being set first, we move @p to the top of the list. Now, SSRS evaluates the dataset needed to fill the dropdown for the first parameter with labels. It relies on a dataset that doesn't need a parameter, so can be produced immediately. Then, having got that parameter value, it can populate the second parameter's dropdown. That in turn results in the report being produced.

1,333,922

CouchDB versioning strategy

Would the following be a viable strategy for implementing versioning(using "example" as a sample document type): Have one original document where the type field is named example_original. Subsequent changes to the document all have type example_change and the id of example_original document as a key. The change would also carry a timestamp. Keep one doc with type example_current that is the result of example_original with all example_change "applied". A new example_change document would automatically be applied to this document. Finding a specific version would consist in retrieving the example_original doc and applying the desired changes (mostly up to a certain timestamp, but it could also be a number of changes). I should mention that my use-case will involve a limited number of changes to the original. Most updates will consist of new original documents. While this is my current use-case I would also be interested in issues that would result if many changes where involved. What pros and cons do you see in this approach?

1,334,016

4

2

null

2009-08-26 11:02:44.277 UTC

12

2015-09-20 16:12:53.887 UTC

2009-08-26 11:46:08.807 UTC

null

146,325

null

53,943

null

1

23

versioning|couchdb|database-versioning|document-storage

12,378

My first worry is: When "getting" a certain version, can you apply the changes to the original without modifying the database? Will you ever need to delete something from the history? Are you really sure? Really, really sure? How about branches? All in all, this looks like a complex strategy. Keep in mind that I've heard about CouchDB but never used it. I'd go for a more simple approach: <ol> <li>When you create a document, you assign a UUID. Don't use the name or you'll run into trouble during rename operations. Add a version field that reads "1". Create a second document which contains a list of documents with the same UUID or add a "parent" pointer to the first document. Having a "history document" per document allows for faster navigation of the history but parent pointers are more "safe" (since you can't easily create illegal structures with them). </li> <li>When you create a new revision, reuse the UUID and assign a new, unique version. Update the history document or the parent pointer. </li> </ol> This strategy is pretty simple to implement and allows all kinds of flexibility later. You can erase parts of the history easily, rename is simple, and you can create branches.

10,006

What is the easiest way to add compression to WCF in Silverlight?

I have a silverlight 2 beta 2 application that accesses a WCF web service. Because of this, it currently can only use basicHttp binding. The webservice will return fairly large amounts of XML data. This seems fairly wasteful from a bandwidth usage standpoint as the response, if zipped, would be smaller by a factor of 5 (I actually pasted the response into a txt file and zipped it.). The request does have the "Accept-Encoding: gzip, deflate" - Is there any way have the WCF service gzip (or otherwise compress) the response? I did find this <a href="http://www.vistax64.com/indigo/113763-wcf-client-j2ee-server-using-gzip.html" rel="noreferrer">link</a> but it sure seems a bit complex for functionality that should be handled out-of-the-box IMHO. OK - at first I marked the solution using the System.IO.Compression as the answer as I could never "seem" to get the IIS7 dynamic compression to work. Well, as it turns out: <ol> <li>Dynamic Compression on IIS7 was working al along. It is just that Nikhil's Web Developer Helper plugin for IE did not show it working. My guess is that since SL hands the web service call off to the browser, that the browser handles it "under the covers" and Nikhil's tool never sees the compressed response. I was able to confirm this by using Fiddler which monitors traffic external to the browser application. In fiddler, the response was, in fact, gzip compressed!!</li> <li>The other problem with the System.IO.Compression solution is that System.IO.Compression does not exist in the Silverlight CLR.</li> </ol> So from my perspective, the EASIEST way to enable WCF compression in Silverlight is to enable Dynamic Compression in IIS7 and write no code at all.

10,162

4

1

null

2008-08-13 16:08:43.68 UTC

13

2017-06-14 11:14:01.457 UTC

2009-07-08 07:18:28.38 UTC

caryden

24,874

caryden

313

null

1

24

wcf|silverlight|compression|gzip

19,644

If you are using IIS7, take a look at the <a href="http://blogs.iis.net/ksingla/archive/2006/06/13/changes-to-compression-in-iis7.aspx" rel="noreferrer">Compression Module</a>. This allows you to configure compression for HTTP requests to your server.

23,702,982

how to get selected value for Kendo DropDownList

I can't figure out how to determine which item is selected in the my kendo dropdownlist. My view defines it's model as: <pre><code>@model KendoApp.Models.SelectorViewModel </code></pre> The ViewModel is defined as: <pre><code>public class SelectorViewModel { //I want to set this to the selected item in the view //And use it to set the initial item in the DropDownList public int EncSelected { get; set; } //contains the list if items for the DropDownList //SelectionTypes contains an ID and Description public IEnumerable<SelectionTypes> ENCTypes } </code></pre> and in My view I have: <pre><code>@(Html.Kendo().DropDownList() .Name("EncounterTypes") .DataTextField("Description") .DataValueField("ID") .BindTo(Model.ENCTypes) .SelectedIndex(Model.EncSelected) ) </code></pre> This DropDownList contains the values I expect but I need to pass the selected value back to my controller when the user clicks the submit button. Everything works fine except I don't have access to which item was selected from the controller's [HttpPost] action. So, how do i assign the DropDownList's value to a hidden form field so it will be available to the controller?

23,709,341

7

1

null

2014-05-16 19:13:49.003 UTC

2

2021-06-02 12:11:26.643 UTC

null

195,356

null

1

14

kendo-ui|kendo-dropdown

104,598

Maybe you should be using the DropDownListFor construct of the Kendo DropDownList like so in your view: <pre><code>@(Html.Kendo().DropDownListFor(m => m.EncSelected) .Name("EncounterTypes") .DataTextField("Description") .DataValueField("ID") .BindTo(Model.ENCTypes) .SelectedIndex(Model.EncSelected) ) </code></pre> This way, when you submit, it will be availble on the POST request and you won't need to put an hidden field anywhere. BUT should you need to use the hidden field for some reason, put it there, <a href="http://demos.telerik.com/kendo-ui/web/dropdownlist/events.html" rel="nofollow">subscribe the the select event</a> of the dropdown list and put using JQuery (for instance) put the selected item on the hidden field. It's your choice :)