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Difference between android.app.Fragment and android.support.v4.app.Fragment

What is the difference between android.app.Fragment and android.support.v4.app.Fragment , and what are the circumstances in which each should be used? ...
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When to use setAttribute vs .attribute= in JavaScript?

...mode link below) if you want programmatic access in JavaScript. It should handle the different types of attributes (think "onload") correctly. Use getAttribute/setAttribute when you wish to deal with the DOM as it is (e.g. literal text only). Different browsers confuse the two. See Quirks modes: at...
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Echo tab characters in bash script

... That's because echo -e is not POSIX and make calls /bin/sh which is normally not the program use use interactively, and normally hasn't -e implemented. For portability, use printf '\t' instead. – Jo So Oct 5 '12 at 19:02 ...
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What is the difference between `after_create` and `after_save` and when to use which?

Are after_create and after_save the same as per functionality? 3 Answers 3 ...
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Are Java static calls more or less expensive than non-static calls?

...ful to know they are at least as fast, if not faster than instance methods and should not be ruled out on a performance basis. – Will Oct 21 '17 at 13:11 2 ...
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Why do I need to do `--set-upstream` all the time?

...t branch. Or, to push to the current branch to a branch of the same name (handy for an alias): git push -u origin HEAD You only need to use -u once, and that sets up the association between your branch and the one at origin in the same way as git branch --set-upstream does. Personally, I think i...
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Is it possible to implement dynamic getters/setters in JavaScript?

I am aware of how to create getters and setters for properties whose names one already knows, by doing something like this: ...
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How to store standard error in a variable

... the error file thus: ERROR=$(</tmp/Error) The shell recognizes this and doesn't have to run 'cat' to get the data. The bigger question is hard. I don't think there's an easy way to do it. You'd have to build the entire pipeline into the sub-shell, eventually sending its final standard outp...
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Make the current Git branch a master branch

...pository in Git. I made a branch, then did some changes both to the master and to the branch. 14 Answers ...
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How to handle code when app is killed by swiping in android?

If my app is running and i press home button, the app goes in background. Now if a long press the home button and kill the app by swiping it from the recent app list, none of the events like onPause() , onStop() or onDestroy() gets called rather the process is terminated. So if i want my servic...