Sort::Key::Multi(3) User Contributed Perl Documentation Sort::Key::Multi(3)NAMESort::Key::Multi - simple multikey sorts
SYNOPSIS
use Sort::Key::Multiqw(sikeysort);
my @data = qw(foo0 foo1 bar34 bar0 bar34 bar33 doz4)
my @sisorted = sikeysort { /(\w+)(\d+)/} @data;
DESCRIPTIONSort::Key::Multi creates multikey sorting subroutines and exports them
to the caller package.
The names of the sorters are of the form "xxxkeysort" or
"xxxkeysort_inplace", where "xxx" determines the number and types of
the keys as follows:
+ "i" indicates an integer key, "u" indicates an unsigned integer
key, "n" indicates a numeric key, "s" indicates a string key and
"l" indicates a string key that obeys locale order configuration.
+ Type characters can be prefixed by "r" to indicate reverse order.
+ A number following a type character indicates that the key type
has to be repeated as many times (for instance "i3" is equivalent
to "iii" and "rs2" is equivalent to "rsrs").
+ Underscores ("_") can be freely used between type indicators.
For instace:
use Key::Sort::Multi qw(iirskeysort
i2rskeysort
i_i_rs__keysort
i2rs_keysort);
exports to the caller package fourth identical sorting functions that
take two integer keys that are sorted in ascending order and one string
key that is sorted in descending order.
The generated sorters take as first argument a subroutine that is used
to extract the keys from the values which are passed inside $_, for
example:
my @data = qw(1.3.foo 1.3.bar 2.3.bar 1.4.bar 1.7.foo);
my @s = i2rs_keysort { split /\./, $_ } @data;
SEE ALSO
For a more general multikey sorter generator see Sort::Key::Maker.
COPYRIGHT AND LICENSE
Copyright (C) 2006 by Salvador Fandin~o <sfandino@yahoo.com>
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself, either Perl version 5.8.4 or, at
your option, any later version of Perl 5 you may have available.
perl v5.14.0 2006-05-17 Sort::Key::Multi(3)
