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;
It works as a pragma module and doesn't export any function, all its functionality is provided via "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';
&multikeygen is the multi-key extraction function for the type and @keytypes are the types of the extracted keys.
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.