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Fully custom validation error message with Rails

...estions about an answer be posted, if not in the comments? Here's the I18n guide: guides.rubyonrails.org/i18n.html – Tyler Rick Dec 15 '11 at 20:45 4 ...
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What does the tilde before a function name mean in C#?

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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How to use the CancellationToken property?

...you app goto background you can cancel this token. You can do this in PCL https://developer.xamarin.com/guides/xamarin-forms/application-fundamentals/app-lifecycle var cancelToken = new CancellationTokenSource(); Task.Factory.StartNew(async () => { await Task.Delay(10000); // call web A...
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Is the C# static constructor thread safe?

...e any instances of a class are created or any static members are accessed. https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/static-constructors The implementation shown is thread safe for the initial construction, that is, no locking or null testing is required f...
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How can I add a hint text to WPF textbox?

... This is my simple solution, adapted from Microsoft (https://code.msdn.microsoft.com/windowsapps/How-to-add-a-hint-text-to-ed66a3c6) <Grid Background="White" HorizontalAlignment="Right" VerticalAlignment="Top" > <!-- overlay with hint text --> &...
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Post parameter is always null

...The official ASP.NET site was updated today with an excellent explanation: https://docs.microsoft.com/en-us/aspnet/web-api/overview/advanced/sending-html-form-data-part-1 In a nutshell, when sending a single simple type in the body, send just the value prefixed with an equal sign (=), e.g. body: =...
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How to change the background color of the options menu?

...instead of Options Menus, as explained here: http://developer.android.com/guide/topics/ui/menus.html#options-menu this hack will almost certainly do nothing (no harm and no good) on 3.X tablets. STATEMENT OF THE PROBLEM (read this before trigger-replying with a negative comment): The Options me...
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HTML5 Audio stop function

...it results in the following error (in console) [Security Error: Content at https://localhost/url.html may not load data from blob:https://localhost/cac32534-78b0-4a62-8355-cc8f1e708d64.] It appears to have no negative effect as the code continues to execute after this (unlike an uncaught Exception)....
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How do you search an amazon s3 bucket?

... AWS released a new Service to query S3 buckets with SQL: Amazon Athena https://aws.amazon.com/athena/ share | improve this answer | follow | ...
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adding and removing classes in angularJs using ng-click

... }); .red{ color:red; } .blue{ color:blue; } <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <body ng-app="ap" ng-controller="con"> <div ng-class="class">{{class}}</div> <button ng-click="changeClass(...