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What reason is there to use null instead of undefined in JavaScript?

...vars to null. Then I'm (pretty) sure that undefined means that a disaster happened. Just imho. – Pete Wilson Jul 7 '11 at 1:14 ...
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How do you implement a class in C? [closed]

... float (*computeArea)(const ShapeClass *shape); } ShapeClass; float shape_computeArea(const ShapeClass *shape) { return shape->computeArea(shape); } This would let you implement a class, by "inheriting" the base class, and implementing a suitable function: typedef struct { ShapeClass sha...
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Is git not case sensitive?

In the first commitment of my partial called _Electronics it was written beginning with a capital letters, then I changed it to _electronics . ...
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Amazon S3 Change file download name

...version is AWS SDK for PHP 3.x. here is the doc http://docs.amazonaws.cn/en_us/aws-sdk-php/latest/api-s3-2006-03-01.html#putobject a piece of my code public function __construct($config) { $this->handle = new S3Client([ 'credentials' => array( 'ke...
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Unit Test? Integration Test? Regression Test? Acceptance Test?

.... Integration test: when it fails, it tells you that the pieces of your application are not working together as expected. Acceptance test: when it fails, it tells you that the application is not doing what the customer expects it to do. Regression test: when it fails, it tells you that the ...
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Why can't I access DateTime->date in PHP's DateTime class?

...ssue. Date being available is actually a side-effect of support for var_dump() here – derick@php.net For some reason, you're not supposed to be able to access the property but var_dump shows it anyways. If you really want to get the date in that format, use the DateTime::format() function. ...
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Xcode 6 how to enable storyboard zoom?

... That does not work for Mac OS app storyboards, only for iOS storyboards. – Kenny Apr 4 '17 at 13:23  |  ...
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Create directory if it does not exist

...me problem. You can use something like this: $local = Get-Location; $final_local = "C:\Processing"; if(!$local.Equals("C:\")) { cd "C:\"; if((Test-Path $final_local) -eq 0) { mkdir $final_local; cd $final_local; liga; } ## If path already exists ## ...
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What is the difference between and ? [duplicate]

... answered Oct 25 '11 at 12:03 pappap 24.6k55 gold badges3636 silver badges4646 bronze badges ...
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Simulator slow-motion animations are now on?

... This is triggered by triple-tapping Shift, but I occasionally see it triggered when I definitely haven't tapped Shift three times in a row without hitting other keys. – Zev Eisenberg Feb 2 '12 at 18:13 ...