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Hour from DateTime? in 24 hours format

...in 24 hours format. For example: If the hour is 2:20:23 p.m. i want to convert it to 14:20 and that's it. 5 Answers ...
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Difference between '..' (double-dot) and '…' (triple-dot) in range generation?

I've just started learning Ruby and Ruby on Rails and came across validation code that uses ranges: 5 Answers ...
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Format decimal for percentage values?

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Referring to a file relative to executing script

In a bash script I'm writing, I use source to include the variable defined in a configuration file. The script to be executed is act.sh , while the script to be source d is act.conf.sh , so in act.sh I have: ...
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Find the extension of a filename in Ruby

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Random row selection in Pandas dataframe

Is there a way to select random rows from a DataFrame in Pandas. 6 Answers 6 ...
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What's the UIScrollView contentInset property for?

Can someone explain to me what the contentInset property in a UIScrollView instance is used for? And maybe provide an example? ...
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Java regular expression OR operator

This may be a dumb question, but I couldn't find it anywhere: 1 Answer 1 ...
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binning data in python with scipy/numpy

is there a more efficient way to take an average of an array in prespecified bins? for example, i have an array of numbers and an array corresponding to bin start and end positions in that array, and I want to just take the mean in those bins? I have code that does it below but i am wondering how it...
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Sass calculate percent minus px

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