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How are software license keys generated?
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Find maximum value of a column and return the corresponding row values using Pandas
...e index, the label may not uniquely identify the row, so df.loc may return more than one row.
Therefore, if df does not have a unique index, you must make the index unique before proceeding as above. Depending on the DataFrame, sometimes you can use stack or set_index to make the index unique. Or, ...
How can I check whether a option already exist in select by JQuery
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Find indices of elements equal to zero in a NumPy array
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Check if string ends with one of the strings from a list
... for sets, {'.mp3','.avi'}, it avoids the extra type conversion and may be more readable depending on your background ('Though it can cause confusion with dictionaries, and cannot be used to create empty sets).
– Perkins
Aug 21 '13 at 8:44
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List comprehension on a nested list?
...ess elements per list, the difference is negligible. For larger lists with more elements per list one might like to use map instead of list comprehension, but it totally depends on application needs.
However I personally find list comprehension to be more readable and idiomatic than map. It is a de...
Small Haskell program compiled with GHC into huge binary
...enerally only needed for debugging.
Dynamically linked Haskell libraries
More recently, GHC has gained support for dynamic linking of both C and Haskell libraries. Most distros now distribute a version of GHC built to support dynamic linking of Haskell libraries. Shared Haskell libraries may be sh...
Eclipse doesn't highlight references anymore
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How to drop a table if it exists?
...ource" disappeared. Archived here & thanks, @TheRedPea for the second, more canonical, source.
– ruffin
Jul 24 at 19:44
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Disabling browser print options (headers, footers, margins) from page?
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