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Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby

I have a feeling there is a simple/built-in way to do this but I can't find it. 13 Answers ...
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check if variable is dataframe

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How to create a video from images with FFmpeg?

...tilli 郝海东冠状病六四事件法轮功 Apr 11 at 8:32 ...
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Shortcut to exit scale mode in VirtualBox [closed]

... @jj_ I hope they never fix it, I've been riding the karma from this question for 5 years. – Mike Miller Jun 9 '17 at 14:58 ...
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Rails migration for change column

We have script/generate migration add_fieldname_to_tablename fieldname:datatype syntax for adding new columns to a model. ...
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Immutable array in Java

Is there an immutable alternative to the primitive arrays in Java? Making a primitive array final doesn't actually prevent one from doing something like ...
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How to make the division of 2 ints produce a float instead of another int?

In another Bruce Eckels exercise in calculating velocity, v = s / t where s and t are integers. How do I make it so the division cranks out a float? ...
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git log of a single revision

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Removing all non-numeric characters from string in Python

...rtelli 724k148148 gold badges11261126 silver badges13241324 bronze badges 2 ...
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Get selected subcommand with argparse

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