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english(3pm) [osx man page]

English(3pm)						 Perl Programmers Reference Guide					      English(3pm)

NAME
English - use nice English (or awk) names for ugly punctuation variables SYNOPSIS
use English qw( -no_match_vars ) ; # Avoids regex performance penalty use English; ... if ($ERRNO =~ /denied/) { ... } DESCRIPTION
This module provides aliases for the built-in variables whose names no one seems to like to read. Variables with side-effects which get triggered just by accessing them (like $0) will still be affected. For those variables that have an awk version, both long and short English alternatives are provided. For example, the $/ variable can be referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module. See perlvar for a complete list of these. PERFORMANCE
This module can provoke sizeable inefficiencies for regular expressions, due to unfortunate implementation details. If performance matters in your application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing use English qw( -no_match_vars ) ; . It is especially important to do this in modules to avoid penalizing all applications which use them. perl v5.16.2 2012-10-11 English(3pm)

Check Out this Related Man Page

Perl::Critic::Policy::Modules::RequireNoMatchVarsWithUseUseriContributed Perl DoPerl::Critic::Policy::Modules::RequireNoMatchVarsWithUseEnglish(3)

NAME
Perl::Critic::Policy::Modules::RequireNoMatchVarsWithUseEnglish - "use English" must be passed a "-no_match_vars" argument. AFFILIATION
This Policy is part of the core Perl::Critic distribution. DESCRIPTION
Due to unfortunate history, if you use the English module but don't pass in a "-no_match_vars" argument, all regular expressions in the entire program, not merely the module in question, suffer a significant performance penalty, even if you only import a subset of the variables. use English; # not ok use English '-no_match_vars'; # ok use English qw< $ERRNO -no_match_vars >; # ok use English qw($OS_ERROR); # not ok In the last example above, while the match variables aren't loaded into your namespace, they are still created in the "English" namespace and you still pay the cost. CONFIGURATION
This Policy is not configurable except for the standard options. AUTHOR
Elliot Shank "<perl@galumph.com>" COPYRIGHT
Copyright (c) 2008-2011 Elliot Shank. 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 2014-06-09 Perl::Critic::Policy::Modules::RequireNoMatchVarsWithUseEnglish(3)
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