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How do I convert dates in a Pandas data frame to a 'date' data type?
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Use astype
In [31]: df
Out[31]:
a time
0 1 2013-01-01
1 2 2013-01-02
2 3 2013-01-03
In [32]: df['time'] = df['time'].astype('datetime64[ns]')
In [33]: df
Out[33]:
a time
0 1 2013-01-01 00:00:00
1 2 20...
Fastest way to extract frames using ffmpeg?
...e frames uncompressed as BMP images:
ffmpeg -i file.mpg -r 1/1 $filename%03d.bmp
This also has the advantage of not incurring more quality loss through quantization by transcoding to JPEG. (PNG is also lossless but tends to take much longer than JPEG to encode.)
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How can I get the sha1 hash of a string in node.js?
...Hash('sha1')
shasum.update('foo')
shasum.digest('hex') // => "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"
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What happens if you static_cast invalid value to enum class?
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131
What is color set to according to the standard?
Answering with a quote from the C++11 and ...
fatal: 'origin' does not appear to be a git repository
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edited May 23 '17 at 12:17
Community♦
111 silver badge
answered Mar 26 '13 at 13:13
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Checkout remote branch using git svn
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357
Standard Subversion layout
Create a git clone of that includes your Subversion trunk, tags, a...
Is there a Python caching library?
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answered Sep 15 '09 at 13:52
Corbin MarchCorbin March
24.5k66 gold badges6767 silver badges9797 bronze badges
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Fastest method to escape HTML tags as HTML entities?
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edited Mar 31 '11 at 12:32
answered Mar 31 '11 at 12:26
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Redis strings vs Redis hashes to represent JSON: efficiency?
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3 Answers
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Split large string in n-size chunks in JavaScript
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You can do something like this:
"1234567890".match(/.{1,2}/g);
// Results in:
["12", "34", "56", "78", "90"]
The method will still work with strings whose size is not an exact multiple of the chunk-size:
"123456789".match(/.{1,2}/g);
// Results in:
["12", "...