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


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 v5.38.0                      2023-07-26
                       Perl::Critic::Policy::Variables::ProhibitMatchVars(3pm)