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Return a `struct` from a function in C
...ny compilers will actually emit a literal call to memcpy in this case - at least, if the structure is reasonably large.
– Carl Norum
Mar 11 '12 at 7:14
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Check if a given key already exists in a dictionary
... Addis, from experience working with around half a million keys you get at least 10x performance boost when writing "key in dict" instead of "key in dict.keys()". PEP and Zen also states that you should ignore them in case they are bad for your project.
– ivan_bilan
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Given two directory trees, how can I find out which files differ by content?
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You said Linux, so you luck out (at least it should be available, not sure when it was added):
diff --brief --recursive dir1/ dir2/ # GNU long options
diff -qr dir1/ dir2/ # common short options
Should do what you need.
If you also want to see differences f...
C++ display stack trace on exception
...'s answer does not help getting a stack trace of the throwing function, at least not with GCC, because a throw statement does not save the current stack trace on its own, and the catch handler won't have access to the stack trace at that point any more.
The only way - using GCC - to solve this is t...
Is it possible to modify variable in python that is in outer, but not global, scope?
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No you cannot, at least in this way.
Because the "set operation" will create a new name in the current scope, which covers the outer one.
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Create folder with batch but only if it doesn't already exist
...s I can tell from testing, and I'd be very surprised if it doesn't work at least back to XP and up to Windows 10. Can you provide the conditions when this doesn't work?
– jpmc26
Mar 10 '16 at 19:00
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JSON formatter in C#?
...en back into json) - really not the most efficient method, but that did at least work!
– benjymous
Apr 10 '15 at 13:11
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Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
...e word answer: asynchronicity.
Forewords
This topic has been iterated at least a couple of thousands of times, here, in Stack Overflow. Hence, first off I'd like to point out some extremely useful resources:
@Felix Kling's answer to "How do I return the response from an asynchronous call?". See ...
What is the best way to tell if a character is a letter or number in Java without using regexes?
...ses you will need to test for multiple blocks. For example, there are (at least) 4 code blocks for Cyrillic characters and 7 for Latin. The Character.UnicodeBlock class defines static constants for well-known blocks; see the javadocs.
Note that any code point will be in at most one block.
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pythonw.exe or python.exe?
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In my experience the pythonw.exe is faster at least with using pygame.
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