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Manual Reference Pages  -  PERL::CRITIC::POLICY::MOOSE::PROHIBITMULTIPLEWITHS (3)

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NAME

Perl::Critic::Policy::Moose::ProhibitMultipleWiths - Require role composition

CONTENTS

VERSION

version 1.04

DESCRIPTION

Moose::Roles are, among other things, the answer to name conflicts plaguing multiple inheritance and mix-ins. However, to enjoy this protection, you must compose your roles together. Roles do not generate conflicts if they are consumed individually.

Pass all of your roles to a single with statement.



    # ok
    package Foo;

    use Moose::Role;

    with qw< Bar Baz >;

    # not ok
    package Foo;

    use Moose::Role;

    with Bar;
    with Baz;



AFFILIATION

This policy is part of Perl::Critic::Moose.

CONFIGURATION

There is a single option, equivalent_modules. This allows you to specify modules that should be treated the same as Moose and Moose::Role, if, say, you were doing something with Moose::Exporter. For example, if you were to have this in your .perlcriticrc file:



    [Moose::ProhibitMultipleWiths]
    equivalent_modules = MyCompany::Moose MooseX::NewThing



then the following code would result in a violation:



    package Baz;

    use MyCompany::Moose;

    with Bing;
    with Bong;



AUTHORS

o Elliot Shank <perl@galumph.com>
o Dave Rolsky <autarch@urth.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2008 - 2015 by Elliot Shank.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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perl v5.20.3 PERL::CRITIC::POLICY::MOOSE::PROHIBITMULTIPLEWITHS (3) 2015-10-07

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