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Detect If Browser Tab Has Focus

...ct of this, and also the note about telling the user you have paused are really good notes. Thanks. – Fenton Sep 12 '11 at 14:30 7 ...
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How to delete an old/unused Data Model Version in Xcode

...d the .xcdatamodeld file to your project This eliminates the need to manually modify any of the project metadata files. share | improve this answer | follow ...
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Should a “static final Logger” be declared in UPPER-CASE?

...aph 3.3 Field Naming Names of fields being used as constants should be all upper-case, with underscores separating words. The following are considered to be constants: All static final primitive types (Remember that all interface fields are inherently static final). All static final ob...
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What is Virtual DOM?

Recently, I looked at Facebook's React framework. It uses a concept called "the Virtual DOM," which I didn't really understand. ...
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I can not find my.cnf on my windows computer [duplicate]

... To answer your question, on Windows, the my.cnf file may be called my.ini. MySQL looks for it in the following locations (in this order): %PROGRAMDATA%\MySQL\MySQL Server 5.7\my.ini, %PROGRAMDATA%\MySQL\MySQL Server 5.7\my.cnf %WINDIR%\my.ini, %WINDIR%\my.cnf C:\my.ini, C:\my.cnf IN...
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Check for installed packages before running install.packages() [duplicate]

...h several users on different computers. One of its lines contains the install.packages("xtable") command. 16 Answers ...
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Is there a job scheduler library for node.js? [closed]

...'t this kind of library how this should be implemented? Should I just set callback to be called every second and check the time and start jobs scheduled for the time or what? ...
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Is 0 a decimal literal or an octal literal?

...tal literals are almost unused today. † Then it dawned upon me that actually almost all integer literals in my code are octal, namely 0 . ...
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Service vs IntentService in the Android platform

...use threads within Service. The IntentService can be used in long tasks usually with no communication to Main Thread. If communication is required, can use Main Thread handler or broadcast intents. Another case of use is when callbacks are needed (Intent triggered tasks). How to trigger? The Se...
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Should Jquery code go in header or footer?

... All scripts should be loaded last In just about every case, it's best to place all your script references at the end of the page, just before </body>. If you are unable to do so due to templating issues and whatnot, ...