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MooseX::MultiMethods(3pm) User Contributed Perl Documentation MooseX::MultiMethods(3pm) NAME
MooseX::MultiMethods - Multi Method Dispatch based on Moose type constraints VERSION
version 0.10 SYNOPSIS
package Paper; use Moose; package Scissors; use Moose; package Rock; use Moose; package Lizard; use Moose; package Spock; use Moose; package Game; use Moose; use MooseX::MultiMethods; multi method play (Paper $x, Rock $y) { 1 } multi method play (Paper $x, Spock $y) { 1 } multi method play (Scissors $x, Paper $y) { 1 } multi method play (Scissors $x, Lizard $y) { 1 } multi method play (Rock $x, Scissors $y) { 1 } multi method play (Rock $x, Lizard $y) { 1 } multi method play (Lizard $x, Paper $y) { 1 } multi method play (Lizard $x, Spock $y) { 1 } multi method play (Spock $x, Rock $y) { 1 } multi method play (Spock $x, Scissors $y) { 1 } multi method play (Any $x, Any $y) { 0 } my $game = Game->new; $game->play(Paper->new, Rock->new); # 1, Paper covers Rock $game->play(Spock->new, Paper->new); # 0, Paper disproves Spock $game->play(Spock->new, Scissors->new); # 1, Spock smashes Scissors DESCRIPTION
This module provides multi method dispatch based on Moose type constraints. It does so by providing a "multi" keyword that extends the "method" keyword provided by MooseX::Method::Signatures. When invoking a method declared as "multi" a matching variant is being searched in all the declared multi variants based on the passed parameters and the declared type constraints. If a variant has been found, it will be invoked. If no variant could be found, an exception will be thrown. AUTHOR
Florian Ragwitz <rafl@debian.org> COPYRIGHT AND LICENSE
This software is copyright (c) 2010 by Florian Ragwitz. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.10.1 2010-01-03 MooseX::MultiMethods(3pm)
