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Transform DateTime into simple Date in Ruby on Rails
...ort/core_ext'
=> true
>> DateTime.new.to_date
=> Mon, 01 Jan -4712
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Transpose list of lists
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How about
map(list, zip(*l))
--> [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
For python 3.x users can use
list(map(list, zip(*l)))
Explanation:
There are two things we need to know to understand what's going on:
The signature of zip: zip(*iterables) This means zip ...
Convert unix time to readable date in pandas dataframe
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4 Answers
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How to export plots from matplotlib with transparent background?
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edited Feb 7 '14 at 15:18
answered Apr 7 '13 at 1:51
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COUNT DISTINCT with CONDITIONS
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edited Nov 12 '19 at 14:04
answered Dec 27 '12 at 0:58
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Fastest way to extract frames using ffmpeg?
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Multimedia MikeMultimedia Mike
10.2k44 gold badges3939 silver badges5555 bronze badges
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How to make an element in XML schema optional?
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Dmitry KudryavtsevDmitry Kudryavtsev
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How exactly does a generator comprehension work?
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Do you understand list comprehensions? If so, a generator expression is like a list comprehensi...
How can I improve my paw detection?
...never actually displayed)
im = ax.imshow(infile.next()[1])
# Make 4 rectangles that we can later move to the position of each paw
rects = [Rectangle((0,0), 1,1, fc='none', ec='red') for i in range(4)]
[ax.add_patch(rect) for rect in rects]
title = ax.set_title('Time 0.0 ms')
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