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Installing PG gem on OS X - failure to build native extension

... 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...
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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...
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Excluding directories in os.walk

I'm writing a script that descends into a directory tree (using os.walk()) and then visits each file matching a certain file extension. However, since some of the directory trees that my tool will be used on also contain sub directories that in turn contain a LOT of useless (for the purpose of thi...
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Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?

I was watching this , and, as you can see, the first command I am told to put in is: 5 Answers ...
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(this == null) in C#!

...spec (section 7.5.7), you shouldn't be able to access this in that context and the ability to do so in C# 3.0 compiler is a bug. C# 4.0 compiler is behaving correctly according to the spec (even in Beta 1, this is a compile time error): § 7.5.7 This access A this-access consists of the res...
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Correct approach to global logging in Golang

... Create a single log.Logger and pass it around? That is possible. A log.Logger can be used concurrently from multiple goroutines. Pass around a pointer to that log.Logger? log.New returns a *Logger which is usually an indication that yo...
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Match multiple cases classes in scala

I'm doing matching against some case classes and would like to handle two of the cases in the same way. Something like this: ...
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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...
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Find full path of the Python interpreter?

... @JohnFreeman: I tried this on a GNU/Linux box w/ GNU coreutils 8.4 (env) and Python 3.4.2. #!/usr/bin/env python3 will return the correct full binary path via sys.executable. Perhaps your OS or Python version behaves slightly differently. – kevinarpe May 22...
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How to remove .html from URL?

... The tip on the 301s and the browser cache is what solved my issues. – bgfvdu3w Feb 8 '18 at 17:10 ...