Perl::Critic::Policy::RegularExpressions::ProhibitSingleCharAlternation(3pm) User Contributed Perl Documentation Perl::Critic::Policy::RegularExpressions::ProhibitSingleCharAlternation(3pm)

Perl::Critic::Policy::RegularExpressions::ProhibitSingleCharAlternation - Use "[abc]" instead of "a|b|c".

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

Character classes (like "[abc]") are significantly faster than single character alternations (like "(?:a|b|c)"). This policy complains if you have more than one instance of a single character in an alternation. So "(?:a|the)" is allowed, but "(?:a|e|i|o|u)" is not.

This Policy is not configurable except for the standard options.

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

Chris Dolan <cdolan@cpan.org>

Copyright (c) 2007-2022 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

2023-07-26 perl v5.38.0