Perl::Critic::Policy::Variables::ProhibitMatchVars(3pm) User Contributed Perl DocumentationPerl::Critic::Policy::Variables::ProhibitMatchVars(3pm)

NAME

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

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 perldoc English 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.

perl v5.14.2							    2012-06-07		   Perl::Critic::Policy::Variables::ProhibitMatchVars(3pm)