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Pimpl idiom vs Pure virtual class interface

...by "value". Often, doesn't make sense to "copy" instances of the class at all. When it does make sense, a polymorphic "Clone" method is usually more appropriate. Examples: A Socket class, a Database class, a "policy" class, anything that would be a "closure" in a functional language. Both pImpl ...
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Unicode characters in URLs

... in Firefox, the clipboard will hold the percent-encoded form (which is usually a good thing), but if you copy only a part of it, it will remain unencoded. share | improve this answer | ...
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Write to UTF-8 file in Python

... I believe the problem is that codecs.BOM_UTF8 is a byte string, not a Unicode string. I suspect the file handler is trying to guess what you really mean based on "I'm meant to be writing Unicode as UTF-8-encoded text, but you've given me a byte string!" Try writin...
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Check play state of AVPlayer

Is there a way to know whether an AVPlayer playback has stalled or reached the end? 11 Answers ...
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Grunt watch error - Waiting…Fatal error: watch ENOSPC

... In my case my problem seems to be to have Dropbox installed which seems to use a lot of watches. So I had to use: fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p as in the accepted answer, but +1 for teach me npm dedupe ...
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Which is faster: Stack allocation or Heap allocation

... Stack allocation is much faster since all it really does is move the stack pointer. Using memory pools, you can get comparable performance out of heap allocation, but that comes with a slight added complexity and its own headaches...
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What is the real overhead of try/catch in C#?

... to make here: Firstly, there is little or NO performance penalty in actually having try-catch blocks in your code. This should not be a consideration when trying to avoid having them in your application. The performance hit only comes into play when an exception is thrown. When an exception is th...
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How to hide output of subprocess in Python 2.7

... use os.devnull if subprocess.DEVNULL is not available (<3.3), use check_call() instead of call() if you don't check its returned code, open files in binary mode for stdin/stdout/stderr, usage of os.system() should be discouraged, &> doesn't work for sh on Ubuntu an explicit >/dev/null ...
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Remote debugging Tomcat with Eclipse

... Actually, yours did fix it. Eclipse doesn't actually say anything when it successfully connects, and reconnecting a second time forces the error. So it was working, but I just didn't notice. – victor ...
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In Java, how do I check if a string contains a substring (ignoring case)? [duplicate]

... for some reason I'm getting false when I call "2014-03-25T17:55:00".contains("T") – Jeremy List Mar 25 '14 at 8:45 3 ...