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Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?

I've just lost three days of my life tracking down a very strange bug where unordered_map::insert() destroys the variable you insert. This highly non-obvious behaviour occurs in very recent compilers only: I found that clang 3.2-3.4 and GCC 4.8 are the only compilers to demonstrate this "feature"....
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Selecting and manipulating CSS pseudo-elements such as ::before and ::after using jQuery

Is there any way to select/manipulate CSS pseudo-elements such as ::before and ::after (and the old version with one semi-colon) using jQuery? ...
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Spring Expression Language (SpEL) with @Value: dollar vs. hash ($ vs. #)

I'm a little confused concerning when to use ${...} compared to #{...} . Spring's documentation only uses #{...} , but there are plenty of examples that use ${...} . Furthermore, when I started with SpEL I was told to use ${...} and it works fine. ...
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How to use Git properly with Xcode?

I have been an iphone developer for a while, and I have recently been including git in my workflow. I have used git settings found on http://shanesbrain.net/2008/7/9/using-xcode-with-git for my workflow so far. ...
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How do I convert a string to a number in PHP?

I want to convert these types of values, '3' , '2.34' , '0.234343' , etc. to a number. In JavaScript we can use Number() , but is there any similar method available in PHP? ...
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Replace a character at a specific index in a string?

I'm trying to replace a character at a specific index in a string. 8 Answers 8 ...
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Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?

I have seen few py scripts which use this at the top of the script. In what cases one should use it? 4 Answers ...
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Using python “with” statement with try-except block

Is this the right way to use the python "with" statement in combination with a try-except block?: 4 Answers ...
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round() doesn't seem to be rounding properly

The documentation for the round() function states that you pass it a number, and the positions past the decimal to round. Thus it should do this: ...
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Record file copy operation with Git

When I move a file in git using git-mv the status shows that the file has been renamed and even if I alter some portions it still considers to be almost the same thing (which is good because it lets me follow the history of it). ...