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Is there a max array length limit in C++?
...o a container that would otherwise use up all the available memory.
Apart from that, C++ doesn't enforce any limits.
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Installing PG gem on OS X - failure to build native extension
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Same error for me and I didn't experience it until I downloaded OS X 10.9 (Mavericks). Sigh, another OS upgrade headache.
Here's how I fixed it (with homebrew):
Install another build of Xcode Tools (typing brew update in the terminal will p...
Create empty file using python [duplicate]
...fter the open() statement finished - but it's cleaner to do it explicitely and relying on CPython-specific behaviour is not good either.
In case you want touch's behaviour (i.e. update the mtime in case the file exists):
import os
def touch(path):
with open(path, 'a'):
os.utime(path, N...
How to identify platform/compiler from preprocessor macros?
...tackoverflow.com%2fquestions%2f4605842%2fhow-to-identify-platform-compiler-from-preprocessor-macros%23new-answer', 'question_page');
setBackground vs setBackgroundDrawable (Android)
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It prevented me from compiling. I put the problematic code in its own function and disabled lint only for that function like this. @TargetApi(Build.VERSION_CODES.JELLY_BEAN) @SuppressWarnings("deprecation") private static void setBg(Relati...
How do I check OS with a preprocessor directive?
...them, with links to where they're found:
Windows
_WIN32 Both 32 bit and 64 bit
_WIN64 64 bit only
Unix (Linux, *BSD, Mac OS X)
See this related question on some of the pitfalls of using this check.
unix
__unix
__unix__
Mac OS X
__APPLE__
__MACH__
Both are defined; checking for eith...
Argparse optional positional arguments?
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@ant From the above, you can see that dir is optional (that it appears in square brackets in argparse output indicates this).
– Vinay Sajip
Sep 15 '14 at 22:00
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How do I remove all .pyc files from a project?
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If you're using bash >=4.0 (or zsh)
rm **/*.pyc
Note that */*.pyc selects all .pyc files in the immediate first-level subdirectories while **/*.pyc recursively scans the whole directory tree. As an example, foo/bar/qux.pyc will be deleted by rm **/*.pyc but not by */*.pyc.
The globstar she...
How can I make one python file run another? [duplicate]
...functions, e.g. function() becomes filename.function(). To avoid this use "from name import *". This will also run the code body. Running with os.system() will not keep the defined function (as it was run in another process). execfile is exec() in Python 3, and it doesn't work.
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How to execute a Python script from the Django shell?
I need to execute a Python script from the Django shell. I tried:
21 Answers
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