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Argparse optional positional arguments?
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859
Use nargs='?' (or nargs='*' if you will need more than one dir)
parser.add_argument('dir', na...
CSS filter: make color image with transparency white
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455
You can use
filter: brightness(0) invert(1);
html {
background: red;
}
p {
float...
Performance - Date.now() vs Date.getTime()
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Double vs. BigDecimal?
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edited Sep 5 '17 at 11:43
Mohammad Faisal
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What is the difference between ndarray and array in numpy?
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Twig ternary operator, Shorthand if-then-else
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295
{{ (ability.id in company_abilities) ? 'selected' : '' }}
The ternary operator is documented u...
Suppress/ print without b' prefix for bytes in Python 3
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Smart Manoj
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answered May 25 '13 at 9:14
sdaausdaau
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Does pandas iterrows have performance issues?
... can be performed in cython
b) iteration in python space
4) itertuples
5) iterrows
6) updating an empty frame (e.g. using loc one-row-at-a-time)
Using a custom Cython routine is usually too complicated, so let's skip that for now.
1) Vectorization is ALWAYS, ALWAYS the first and best choice. ...
Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?
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265
The MediaStore API is probably throwing away the alpha channel (i.e. decoding to RGB565). If you...
Replace None with NaN in pandas dataframe
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