---
name: "MooseX::MultiMethods"
section: "3pm"
platform: "linux"
package: "libmoosex-multimethods-perl"
version: "0.10-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/MooseX::MultiMethods"
---

# MooseX::MultiMethods(3pm)

Multi Method Dispatch based on Moose type constraints

## 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.