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(Mac) -bash: __git_ps1: command not found

...r - in git's development history this is after a commit that split out the __git_ps1 function from the completion functionality into a new file (git-prompt.sh). The commit that introduced this change, which explains the rationale, is af31a456. I would still suggest that you just source the version...
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Can I redirect the stdout in python into some sort of string buffer?

...ngIO import StringIO # Python3 use: from io import StringIO import sys old_stdout = sys.stdout sys.stdout = mystdout = StringIO() # blah blah lots of code ... sys.stdout = old_stdout # examine mystdout.getvalue() share ...
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How is the undo tree used in Vim?

... See also :h undo-redo, which lists all the commands and their usage. There are two ways to traverse the undo tree. One is to go "back in time". g+ and g- will traverse all of the nodes in the tree in chronological or reverse-chronological order (which can...
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How to specify new GCC path for CMake

... path /usr/bin/gcc . But it is old, I need a new version of gcc. So I install a new version in a new path /usr/local/bin/gcc . ...
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What does character set and collation mean exactly?

...a symbol, the number 0 is the encoding for 'A', and the combination of all four letters and their encodings is a character set. Now, suppose that we want to compare two string values, 'A' and 'B'. The simplest way to do this is to look at the encodings: 0 for 'A' and 1 for 'B'. Be...
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Longest line in a file

...ing for a simple way to find the length of the longest line in a file. Ideally, it would be a simple bash shell command instead of a script. ...
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Count how many records are in a CSV Python?

...aranteed to be a fixed size, so the only way to count them is to read them all. – Martijn Pieters♦ Apr 19 '13 at 15:55 1 ...
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How to apply a function to two columns of Pandas dataframe

Suppose I have a df which has columns of 'ID', 'col_1', 'col_2' . And I define a function : 12 Answers ...
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How to use clock() in C++

How do I call clock() in C++ ? 7 Answers 7 ...
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What is a memory fence?

...ead/writes occur in the order you expect. For example a 'full fence' means all read/writes before the fence are comitted before those after the fence. Note memory fences are a hardware concept. In higher level languages we are used to dealing with mutexes and semaphores - these may well be implemen...