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Fastest way to check a string contain another substring in JavaScript?

I'm working with a performance issue on JavaScript. So I just want to ask: what is the fastest way to check whether a string contains another substring (I just need the boolean value)? Could you please suggest your idea and sample snippet code? ...
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ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al

I just discovered a logical bug in my code which was causing all sorts of problems. I was inadvertently doing a bitwise AND instead of a logical AND . ...
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TransactionManagementError “You can't execute queries until the end of the 'atomic' block” while usi

I am getting TransactionManagementError when trying to save a Django User model instance and in its post_save signal, I'm saving some models that have the user as the foreign key. ...
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Regular expression to match a line that doesn't contain a word

I know it's possible to match a word and then reverse the matches using other tools (e.g. grep -v ). However, is it possible to match lines that do not contain a specific word, e.g. hede , using a regular expression? ...
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Can you build dynamic libraries for iOS and load them at runtime?

Are dynamic libraries supported on iOS (iPhone/iPad)? 3 Answers 3 ...
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Bring a window to the front in WPF

How can I bring my WPF application to the front of the desktop? So far I've tried: 18 Answers ...
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OpenJDK availability for Windows OS [closed]

...ndows OS? From the OpenJDK home page ( http://openjdk.java.net/ ) it redirects to Oracle Sun JRE for Windows machine. 11 An...
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Facebook Callback appends '#_=_' to Return URL

Facebook callback has started appending #_=_ hash underscore to the Return URL 23 Answers ...
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.gitignore for PhoneGap/Cordova 3.0 projects - what should I commit?

I just tried to create a new phonegap 3.0 project... Note: I'm new to phonegap. Anyways, I see the project folder contains: ...
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Git Clone: Just the files, please?

I want to clone a GIT repo and NOT end up with a .git directory. In other words I just want the files. Is there a way to do this? ...