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What is the difference between is_a and instanceof?

I am aware that instanceof is an operator and that is_a is a method. 9 Answers 9 ...
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How to change the session timeout in PHP?

...minutes of inactivity. If relaxing this requirement a little is acceptable and you are fine with placing a lower bound instead of a strict limit to the duration, you can do so easily and without writing custom logic. Convenience in relaxed environments: how and why If your sessions are implemented w...
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difference and when to use getApplication(), getApplicationContext(), getBaseContext() and someClass

I'm new to android and I'm trying to understand the difference between getApplication() , getApplicationContext( ), getBaseContext() , getContext() and someClass.this and especially when to use the these methods in the following code lines: ...
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Difference between JSON.stringify and JSON.parse

... JSON.stringify turns a JavaScript object into JSON text and stores that JSON text in a string, eg: var my_object = { key_1: "some text", key_2: true, key_3: 5 }; var object_as_string = JSON.stringify(my_object); // "{"key_1":"some text","key_2":true,"key_3":5}" typeof(objec...
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What is a “translation unit” in C++

I am reading at the time the "Effective C++" written by Meyers and came across the term "translation unit". 11 Answers ...
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What is the difference between required and ng-required?

What is the difference between required and ng-required (form validation)? 3 Answers ...
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When do we need curly braces around shell variables?

In shell scripts, when do we use {} when expanding variables? 7 Answers 7 ...
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Why is Visual Studio 2013 very slow?

...Visual Studio according to these steps: In Visual Studio, click "Tools", and then click "Options". In the Options dialog box, navigate to the "Environment > General" section and clear the "Automatically adjust visual experience based on client performance" check box. (Refer to the following scr...
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Most common C# bitwise operations on enums

... These extensions just made my day, my week, my month, and quite possibly my year. – thaBadDawg Mar 3 '10 at 22:39 ...
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AngularJS : When to use service instead of factory

...ng objects into AngularJS dependency injection system. It is very flexible and can contain sophisticated creation logic. Since factories are regular functions, we can also take advantage of a new lexical scope to simulate "private" variables. This is very useful as we can hide implementation details...