libsort-key-top-perl

Perl module to select and sort top n elements of a list

Description

The functions available from this module select the top n elements from a list using several common orderings and custom key extraction procedures.

They are all variations around 'keytopsort { CALC_KEY($_) } $n => @data;'.

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.

In scalar context, the value returned by the functions on this module is the cutoff value allowing to select nth element from the array.

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Homepage

https://metacpan.org/release/Sort-Key-Top


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