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Perl::CrPerl::Critic::UsercContributedxPerlsDocumentationtEnumeratedClasses(3)

NAME
       Perl::Critic::Policy::RegularExpressions::ProhibitEnumeratedClasses -
       Use named character classes instead of explicit character lists.

AFFILIATION
       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION
       This policy is not for everyone!	 If you	are working in pure ASCII,
       then disable it now or you may see some false violations.

       On the other hand many of us are	working	in a multilingual world	with
       an extended character set, probably Unicode.  In	that world, patterns
       like "m/[A-Z]/" can be a	source of bugs when you	really meant
       "m/\p{IsUpper}/".  This policy catches a	selection of possible
       incorrect character class usage.

       Specifically, the patterns are:

       "[\t\r\n\f\ ]" vs. "\s"

       "[\t\r\n\ ]" vs.	"\s"   (because	many people forget "\f")

       "[A-Za-z0-9_]" vs. "\w"

       "[A-Za-z]" vs. "\p{IsAlphabetic}"

       "[A-Z]" vs. "\p{IsUpper}"

       "[a-z]" vs. "\p{IsLower}"

       "[0-9]" vs. "\d"

       "[^\w]" vs. "\W"

       "[^\s]" vs. "\S"

CONFIGURATION
       This Policy is not configurable except for the standard options.

CREDITS
       Initial development of this policy was supported	by a grant from	the
       Perl Foundation.

AUTHOR
       Chris Dolan <cdolan@cpan.org>

COPYRIGHT
       Copyright (c) 2007-2011 Chris Dolan.  Many 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

perl v5.Perl::Critic::Policy::RegularExpressions::ProhibitEnumeratedClasses(3)

NAME | AFFILIATION | DESCRIPTION | CONFIGURATION | CREDITS | AUTHOR | COPYRIGHT

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