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How to pass boolean values to a PowerShell script from a command prompt
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10 Answers
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How do I set bold and italic on UILabel of iPhone/iPad?
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19 Answers
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Is there a documented way to set the iPhone orientation?
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17 Answers
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How to extract a floating number from a string [duplicate]
I have a number of strings similar to Current Level: 13.4 db. and I would like to extract just the floating point number. I say floating and not decimal as it's sometimes whole. Can RegEx do this or is there a better way?
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How to reset a single table in rails?
I want the primary key values to start from 1 again.
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What is the difference between join and merge in Pandas?
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import pandas as pd
left = pd.DataFrame({'key': ['foo', 'bar'], 'val': [1, 2]}).set_index('key')
right = pd.DataFrame({'key': ['foo', 'bar'], 'val': [4, 5]}).set_index('key')
left.join(right, lsuffix='_l', rsuffix='_r')
val_l val_r
key
foo 1 4
bar 2 5
The ...
Bash Templating: How to build configuration files from templates with Bash?
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You can use this:
perl -p -i -e 's/\$\{([^}]+)\}/defined $ENV{$1} ? $ENV{$1} : $&/eg' < template.txt
to replace all ${...} strings with corresponding enviroment variables (do not forget to export them before running this script).
For pure bash this should work (assuming that va...
How to perform case-insensitive sorting in JavaScript?
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15 Answers
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