Sort::Key::Natural - fast natural sorting
use Sort::Key::Natural qw(natsort);
my @data = qw(foo1 foo23 foo6 bar12 bar1
foo bar2 bar-45 foomatic b-a-r-45);
my @sorted = natsort @data;
print "@sorted\n";
# prints:
# b-a-r-45 bar1 bar2 bar12 bar-45 foo foo1 foo6 foo23 foomatic
use Sort::Key::Natural qw(natkeysort);
my @objects = (...);
my @sorted = natkeysort { $_->get_id } @objects;
This module extends the Sort::Key family of modules to support natural sorting.
Under natural sorting, strings are splitted at word and number boundaries, and the resulting substrings are compared as follows:
Spaces, symbols and non-printable characters are only considered for splitting the string into its parts but not for sorting. For instance foo-bar-42 is broken in three substrings foo, bar and 42 and after that the dashes are ignored.
Also, once this module is loaded, the new type natural (or nat) will be available from Sort::Key::Maker. For instance:
use Sort::Key::Natural; use Sort::Key::Maker i_rnat_keysort => qw(integer -natural);
creates a multikey sorter i_rnat_keysort accepting two keys, the first to be compared as an integer and the second in natural descending order.
the functions that can be imported from this module are:
returns the elements of @data sorted in natural order.
returns the elements of @data sorted in natural descending order.
returns the elements on @array naturally sorted by the keys resulting from applying them CALC_KEY.
is similar to natkeysort but sorts the elements in descending order.
these functions are similar respectively to natsort, rnatsort, natsortkey and rnatsortkey, but they sort the array @data in place.
transforms key $key in a way that when sorted with Sort::Key keysort results in a natural sort. If the argument $key is not provided it defaults to $_
Other module providing similar functionality is Sort::Naturally.
Copyright (C) 2006 by Salvador Fandiño, <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.
