/usr/lib/x86_64-linux-gnu/perl5/5.22/Sort/Key/Register.pm is in libsort-key-perl 1.33-1build2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | package Sort::Key::Register;
our $VERSION = '1.30';
use warnings;
use strict;
use Sort::Key;
sub import {
my $class = shift;
my $name = shift;
if (@_ == 1) {
Sort::Key::Types::register_type($name, undef, @_);
}
else {
Sort::Key::Types::register_type($name, @_);
}
}
1;
__END__
=head1 NAME
Sort::Key::Register - tell Sort::Key how to sort new data types.
=head1 SYNOPSIS
use Sort::Key::Register Person =>
sub { $_->surname, $_->name },
qw(string string);
use Sort::Key::Register 'Color::Component' => 'integer';
use Sort::Key::Register Color =>
sub { $_->R, $_->G, $_->B },
('Color::Component') x 3;
=head1 DESCRIPTION
Sort::Key::Register allows one to register new data types with
Sort::Key so that they can be sorted as natively supported ones.
It works as a pragma module and doesn't export any function, all its
functionality is provided via C<use>:
use Sort::Key::Register ...
To avoid collisions between modules registering types with the same
name, you should qualify them with the package name.
use Sort::Key::Register 'MyPkg::foo' => sub { $_ }, '-int';
# or using __PACKAGE__:
use Sort::Key::Register __PACKAGE__, sub { $_ }, '-int';
=head2 USAGE
=over 4
=item use Sort::Key::Register $name => \&multikeygen, @keytypes;
registers type C<$name>.
C<&multikeygen> is the multi-key extraction function for the type and
C<@keytypes> are the types of the extracted keys.
=item use Sort::Key::Register $name => $keytype;
this 'use' is useful for simple types that are sorted as another type
already registered, maybe changing the direction of the sort
(ascending or descending).
=back
=head1 SEE ALSO
L<Sort::Key>, L<Sort::Key::Maker>.
=head1 AUTHOR
Salvador FandiE<ntilde>o, E<lt>sfandino@yahoo.comE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2005, 2014 by Salvador FandiE<ntilde>o
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.
=cut
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