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Why em instead of px?

... There is no way to convert between ems and pixels, unless you know what the size of an 'em' is in pixels, in that context. That can depend on the inherited font size of that element, which can in turn depend on the font size of the document as a whole, which can depend on the font size ...
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Why is setTimeout(fn, 0) sometimes useful?

...(say takes 3 min) Prints the results of calculation into the result div. Now, your users start testing this, click "do something" button, and the page sits there doing seemingly nothing for 3 minutes, they get restless, click the button again, wait 1 min, nothing happens, click button again... T...
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Code for Greatest Common Divisor in Python [closed]

...ple assignment uses x before it is assigned. You assigned y to x first, so now y is going to be set to 0 (as y % y is always 0). – Martijn Pieters♦ Mar 19 '15 at 16:54 1 ...
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How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?

... on an exceedingly large codebase, and recently upgraded to gcc 4.3, which now triggers this warning: 24 Answers ...
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Why is __init__() always called after __new__()?

...it__ takes self as parameter. Until you create instance there is no self. Now, I gather, that you're trying to implement singleton pattern in Python. There are a few ways to do that. Also, as of Python 2.6, you can use class decorators. def singleton(cls): instances = {} def getinstance(...
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What is token-based authentication?

... Link is now broken. – Elliptical view Jun 11 '19 at 16:30  |  show 1 more c...
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How can HTML5 “replace” Flash? [closed]

.... Great way to bring us back to 1998. No thanks, I'll stick with Flash for now. As much as open standards are a worthy goal, I don't see this panning out the way they are saying... My two cents. share | ...
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How can I get a resource content from a static context?

... public static Context getContext(){ return mContext; } } Now you can use: App.getContext() whenever you want to get a context, and then getResources() (or App.getContext().getResources()). share | ...
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iPhone hide Navigation Bar only on first page

...wipe, but release early enough to stay on B, the navbar still gets hidden. Now there is no way to go back anymore. This is due to animated=YES. I know it looks ugly with animated=NO, but it seems when the animation for hiding the navbar is not yet finished, then the animation for showing it again is...
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How to calculate the running time of my program? [duplicate]

I wrote a program and now I want to calculate the total running time of my program from start to end. 6 Answers ...