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How to use SVN, Branch? Tag? Trunk?

... The subversion book is an excellent source of information on strategies for laying out your repository, branching and tagging. See also: Do you continue development in a branch or in the trunk Branching strategies ...
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How do I check if a string is unicode or ascii?

...bytes type that holds raw bytes. In Python 2, a string may be of type str or of type unicode. You can tell which using code something like this: def whatisthis(s): if isinstance(s, str): print "ordinary string" elif isinstance(s, unicode): print "unicode string" else: ...
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Extracting text OpenCV

...e elements (inspired from a LPD): #include "opencv2/opencv.hpp" std::vector<cv::Rect> detectLetters(cv::Mat img) { std::vector<cv::Rect> boundRect; cv::Mat img_gray, img_sobel, img_threshold, element; cvtColor(img, img_gray, CV_BGR2GRAY); cv::Sobel(img_gray, img_sobel, ...
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How can I replace a newline (\n) using sed?

... Append the current and next line to the pattern space via N. If we are before the last line, branch to the created label $!ba ($! means not to do it on the last line as there should be one final newline). Finally the substitution replaces every newline with a space on the pattern space (which is th...
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Is there shorthand for returning a default value if None in Python? [duplicate]

...if x is not null, and the empty string if x is null. I've found it useful for working with databases. 5 Answers ...
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If Python is interpreted, what are .pyc files?

... @froadie: a language is not "interpreted" or "compiled" as such. A specific implementation can be an interpreter or a compiler (or a hybrid or a JIT compiler). – Joachim Sauer Jun 8 '10 at 14:41 ...
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Qt events and signal/slots

In the Qt world, what is the difference of events and signal/slots? 10 Answers 10 ...
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What is the javascript filename naming convention? [closed]

Should files be named something-with-hyphens.js, camelCased.js, or something else? 5 Answers ...
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Why not use Double or Float to represent currency?

I've always been told never to represent money with double or float types, and this time I pose the question to you: why? ...
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What is your most productive shortcut with Vim?

...ems you should be (as a developer) faster with Vim than with any other editor. I'm using Vim to do some basic stuff and I'm at best 10 times less productive with Vim. ...