libsort-key-top-perl - 0.08-4+b5 main

The functions available from this module select the top n elements from a
list using several common orderings and custom key extraction procedures.
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They are all variations around 'keytopsort { CALC_KEY($_) } $n => @data;'.
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In array context, this function calculates the ordering key for every element
in @data using the expression inside the block. Then it selects and orders
the $n elements with the lower keys when compared lexicographically.
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In scalar context, the value returned by the functions on this module is the
cutoff value allowing to select nth element from the array.