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Using ECMAScript 6

...avascript-harmony flag is set: /(?<!a)b/.test('ab') (and throw the next error if the flag is not set: "Uncaught SyntaxError: Invalid regular expression: /(?<!a)b/: Invalid group") – Rob W Dec 25 '16 at 11:25 ...
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Using Node.js only vs. using Node.js with Apache/Nginx

...t Sergeant mentioned in his answer, you can more easily display meaningful error pages or fall back onto a static site if your node service crashes. Otherwise users may just get a timed out connection. Running another web server in front of Node may help to mitigate security flaws and DoS attacks ag...
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What is the difference between gmake and make?

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ASP.NET MVC: Custom Validation by DataAnnotation

...is.MinLength) { return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName)); } return null; } } and then you might have a view model and decorate one of its properties with it: public class MyViewModel { [CombinedMinLength(20, "B...
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How do I check if file exists in jQuery or pure JavaScript?

...ajax({ url:'http://www.example.com/somefile.ext', type:'HEAD', error: function() { //file not exists }, success: function() { //file exists } }); EDIT: Here is the code for checking 404 status, without using jQuery function UrlExists(url) { var...
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Does Ruby have a string.startswith(“abc”) built in method?

Does Ruby have a some_string.starts_with("abc") method that's built in? 4 Answers 4 ...
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Programmatically set height on LayoutParams as density-independent pixels

Is there any way to set the height/width of a LayoutParams as density-independent pixels (dp)? It looks like the height/width, when set programmatically, are in pixels and not dp. ...
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TypeError: 'module' object is not callable

Why am I getting this error? I'm confused. 11 Answers 11 ...
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Determine path of the executing script

... Got the same error, with a saved scriptt and freshly installed and run R 3.2.0 on windows... – RalfB May 20 '15 at 9:57 ...
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How do I raise a Response Forbidden in django

...sed to returing HttpResponseForbidden, raising PermissionDenied causes the error to be rendered using the 403.html template, or you can use middleware to show a custom "Forbidden" view. share | impr...