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How to count the number of true elements in a NumPy bool array

...xample: >>> import numpy as np >>> boolarr = np.array([[0, 0, 1], [1, 0, 1], [1, 0, 1]], dtype=np.bool) >>> boolarr array([[False, False, True], [ True, False, True], [ True, False, True]], dtype=bool) >>> np.sum(boolarr) 5 Of course, that is ...
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Making WPF applications look Metro-styled, even in Windows 7? (Window Chrome / Theming / Theme)

... +100 What I did was creating my own Window and Style. Because I like to have control over everything and I didn't want some external libra...
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Count work days between two dates

... 306 For workdays, Monday to Friday, you can do it with a single SELECT, like this: DECLARE @StartD...
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How to remove convexity defects in a Sudoku square?

...Y = ImageMultiply[MorphologicalBinarize[GaussianFilter[srcAdjusted, 3, {2, 0}], {0.02, 0.05}], mask]; lX = ImageMultiply[MorphologicalBinarize[GaussianFilter[srcAdjusted, 3, {0, 2}], {0.02, 0.05}], mask]; I use connected component analysis again to extract the grid lines from these images. The g...
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Count occurrences of a char in plain text file

... | edited Oct 21 '09 at 21:45 answered Oct 21 '09 at 21:37 ...
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Validate phone number with JavaScript

...alidates that the phone number is in one of these formats: (123) 456-7890 or 123-456-7890 26 Answers ...
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Make xargs execute the command once for each line of input

... 405 The following will only work if you do not have spaces in your input: xargs -L 1 xargs --max-l...
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How to open, read, and write from serial port in C?

...ity) { struct termios tty; if (tcgetattr (fd, &tty) != 0) { error_message ("error %d from tcgetattr", errno); return -1; } cfsetospeed (&tty, speed); cfsetispeed (&tty, speed); tty.c_cflag = (tty.c_...
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Difference between exit(0) and exit(1) in Python

What's the difference between exit(0) and exit(1) in Python? 5 Answers 5 ...
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How can I eliminate slow resolving/loading of localhost/virtualhost (a 2-3 second lag) on Mac OS X L

...environments on Mac OS X Lion (brand new macbook air purchased in January 2012), I have noticed that resolving to a virtual host is very slow (around 3 seconds) the first time but after that is fast as long as I continue loading it regularly. ...