Perl::Critic::Policy::Variables::ProhibitPunctuationVars
Perl's vocabulary of punctuation variables such as $!, $., and $^ are perhaps the leading cause of its repuation as inscrutable line noise. The simple alternative is to use the English module to give them clear names.
$!
$.
$^
$| = undef; #not ok use English qw(-no_match_vars); local $OUTPUT_AUTOFLUSH = undef; #ok
The scratch variables $_ and @_ are very common and have no equivalent name in English, so they are exempt from this policy. All the $n variables associated with regex captures are exempt too.
$_
@_
Jeffrey Ryan Thalhammer <thaljef@cpan.org>
Copyright (c) 2005 Jeffrey Ryan Thalhammer. All rights reserved.
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.
To install Perl::Critic, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Perl::Critic
CPAN shell
perl -MCPAN -e shell install Perl::Critic
For more information on module installation, please visit the detailed CPAN module installation guide.