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How to differ sessions in browser-tabs?

...f I store information in the user session, this information is shared from all the tabs from the same browser. How to differ sessions in the browser-tabs? In this example: ...
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What do querySelectorAll and getElementsBy* methods return?

...Name (and similar functions like getElementsByTagName and querySelectorAll ) work the same as getElementById or do they return an array of elements? ...
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What is the difference between an interface and a class, and why I should use an interface when I ca

... Hey that looks like a very good ingredient for me to understand, I really appreciate it, thanks a lot :) :) – Jasmine Jun 6 '12 at 13:46 ...
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window.onload vs $(document).ready()

...e HTML document has been loaded, while the onload event occurs later, when all content (e.g. images) also has been loaded. The onload event is a standard event in the DOM, while the ready event is specific to jQuery. The purpose of the ready event is that it should occur as early as possible after ...
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Why should I capitalize my SQL keywords? [duplicate]

Simple question. I personally find a string of lowercase characters to be more readable than a string of uppercase characters. Is some old/popular flavor of SQL case-sensitive or something? ...
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Replace \n with actual new line in Sublime Text

...sion syntax when searched. In Replace With, type: \n Click on the 'Replace All' button (Keyboard Shortcut: CTRL + Alt + Enter) Your literal text \n will then turn into an actual line break. share | ...
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How to: Define theme (style) item for custom widget

...; array.recycle(); } } Now you have to apply Theme.Custom to all activities that use CustomImageButton (in AndroidManifest.xml): <activity android:name=".MyActivity" android:theme="@style/Theme.Custom"/> That's all. Now CustomImageButton tries to load default attribute values ...
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Should I return a Collection or a Stream?

...am().collect(toList()); So the question is, which is more useful to your callers. If your result might be infinite, there's only one choice: Stream. If your result might be very large, you probably prefer Stream, since there may not be any value in materializing it all at once, and doing so could c...
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What is the difference between MVC and MVVM? [closed]

...t. For ASP.Net, MVVM is used to two-way bind data within views. This is usually a client-side implementation (e.g. using Knockout.js). MVC on the other hand is a way of separating concerns on the server-side. For Silverlight and WPF, the MVVM pattern is more encompassing and can appear to act as a r...
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Is there a standard function to check for null, undefined, or blank variables in JavaScript?

...t undefined or null ? I've got this code, but I'm not sure if it covers all cases: 41 Answers ...