CentOS 7.0 - man page for perl::critic::policy::variables::prohibitmatchvars (centos section 3)
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Perl::Critic::Policy::Variables::ProhibitMatchVars - Avoid "$`", "$&", "$'" and their
This Policy is part of the core Perl::Critic distribution.
Using the "match variables" "$`", $&, and/or "$'" 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
This Policy is not configurable except for the standard options.
Chris Dolan <email@example.com>
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 v5.16.3 Perl::Critic::Policy::Variables::ProhibitMatchVars(3)
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