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Check if a string matches a regex in Bash script
...]] && echo "yes"
Or more a accurate test:
[[ $date =~ ^[0-9]{4}(0[1-9]|1[0-2])(0[1-9]|[1-2][0-9]|3[0-1])$ ]] && echo "yes"
# |^^^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^^^^^ ^^^^^^ |
# | | ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ |
# | | | ...
Append column to pandas dataframe
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135
It seems in general you're just looking for a join:
> dat1 = pd.DataFrame({'dat1': [9,5]})...
how does array[100] = {0} set the entire array to 0?
How does the compiler fill values in char array[100] = {0}; ? What's the magic behind it?
4 Answers
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Creating a zero-filled pandas data frame
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140
You can try this:
d = pd.DataFrame(0, index=np.arange(len(data)), columns=feature_list)
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An error occurred while installing pg (0.17.1), and Bundler cannot continue
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16 Answers
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Generating random whole numbers in JavaScript in a specific range?
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Best Practice: Software Versioning [closed]
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12 Answers
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Format number to 2 decimal places
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edited Oct 22 '18 at 9:57
Madhur Bhaiya
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How can I brew link a specific version?
... same package in /usr/local/Cellar/libfoo like /usr/local/Cellar/libfoo/1.0.1 , /usr/local/Cellar/libfoo/HEAD and /usr/local/Cellar/libfoo/mycopy
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