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Manual Reference Pages  -  PERL::CRITIC::POLICY::VARIABLES::PROHIBITMATCHVARS (3)

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NAME

Perl::Critic::Policy::Variables::ProhibitMatchVars - Avoid "$`", "$&", "$" and their English equivalents.

CONTENTS

AFFILIATION

This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

Using the match variables $`, $&, and/or $ can significantly degrade the performance of a program. This policy forbids using them or their English equivalents. See <B>perldoc EnglishB> or PBP page 82 for more information.

It used to forbid plain use English; because it ends up causing the performance side-effects of the match variables. However, the message emitted for that situation was not at all clear and there is now Perl::Critic::Policy::Modules::RequireNoMatchVarsWithUseEnglish, which addresses this situation directly.

CONFIGURATION

This Policy is not configurable except for the standard options.

AUTHOR

Chris Dolan <cdolan@cpan.org>

COPYRIGHT

Copyright (c) 2006-2011 Chris Dolan.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license can be found in the LICENSE file included with this module.

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perl v5.20.3 PERL::CRITIC::POLICY::VARIABLES::PROHIBITMATCHVARS (3) 2016-04-03

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