Perl::Critic::Policy::RegularExpressions::ProhibitSingleCharAlternation3pm
Use "[abc]" instead of "a|b|c".
Affiliation
This Policy is part of the core Perl::Critic distribution.
Overview
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.
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.
Releases
10 releases since Debian 5.0 (Lenny); the text changed 9 times.