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Numpy how to iterate over columns of array?
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For those wondering, array.T isn't costly, as it just changes the 'strides' of array (see this answer for an interesting discussion)
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Filtering a list based on a list of booleans
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>>> from itertools import compress
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> list(compress(list_a, fil))
[1, 4]
Timing comparisons(py3.x):
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> %...
How can I use a local image as the base image with a dockerfile?
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4 Answers
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Find the extension of a filename in Ruby
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4 Answers
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Remove the bottom divider of an android ListView
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answered Feb 25 '11 at 14:35
Alex.SemeniukAlex.Semeniuk
1,86211 gold badge1212 silver badges22 bronze badges
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What are the correct version numbers for C#?
...ession trees, anonymous types, implicit typing (var), query expressions
C# 4.0 released with .NET 4 and VS2010 (April 2010). Major new features: late binding (dynamic), delegate and interface generic variance, more COM support, named arguments, tuple data type and optional parameters
C# 5.0 released...
How to enable Ad Hoc Distributed Queries
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4 Answers
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How can I extract a good quality JPEG image from a video file with ffmpeg?
... the default is -qmin 2).
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This ...
How do you specify the Java compiler version in a pom.xml file?
... Michel
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answered May 23 '13 at 20:44
Sean Patrick FloydSean Patrick Floyd
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How can I set the aspect ratio in matplotlib?
...e,ysize = fig.get_size_inches()
minsize = min(xsize,ysize)
xlim = .4*minsize/xsize
ylim = .4*minsize/ysize
if aspect < 1:
xlim *= aspect
else:
ylim /= aspect
fig.subplots_adjust(left=.5-xlim,
right=.5+xlim,
bo...