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.\" ========================================================================
.\"
.IX Title "MooseX::MultiMethods 3pm"
.TH MooseX::MultiMethods 3pm "2022-12-13" "perl v5.36.0" "User Contributed Perl Documentation"
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.SH "NAME"
MooseX::MultiMethods \- Multi Method Dispatch based on Moose type constraints
.SH "VERSION"
.IX Header "VERSION"
version 0.10
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 5
\&    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
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module provides multi method dispatch based on Moose type constraints. It
does so by providing a \f(CW\*(C`multi\*(C'\fR keyword that extends the \f(CW\*(C`method\*(C'\fR keyword
provided by MooseX::Method::Signatures.
.PP
When invoking a method declared as \f(CW\*(C`multi\*(C'\fR 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.
.SH "AUTHOR"
.IX Header "AUTHOR"
.Vb 1
\&  Florian Ragwitz <rafl@debian.org>
.Ve
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is copyright (c) 2010 by Florian Ragwitz.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.