MooseX::MultiMethods(3pm)

MooseX::MultiMethods3pm

Multi method dispatch based on moose type constraints

Usage

    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

Version

version 0.10

Overview

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.

Releases

7 releases since Debian 7 (Wheezy); the text changed 2 times.

  1. 7–9
  2. 10–11
  3. 12–13

Author

  Florian Ragwitz <[email protected]>

From libmoosex-multimethods-perl 0.10-3 in Debian 13 (Trixie). Parsed by carta from the page's man source.