Perl::Critic::Policy::Plicease::ProhibitUnicodeDigitInRegexp - Prohibit non-ASCII \d in regular expressions
version 0.01
The character class \d in a regular expression matches all unicode digit character, which might not be what you expect if you are testing if a string can be used as a number in Perl. Instead use either [0-9], or if you are on Perl 5.14 or better you can use the /a modifier.
\d
[0-9]
/a
/\d/; # not ok /\d/a; # ok
None.
This policy is not configurable except for the standard options.
This is a policy that should not be applied toward all applications without some thought. This is generally true for all Perl::Critic policies, but especially so for this policy.
In the general the ability to match against unicode digits is a useful ability, and doesn't constitute bad code. Some applications don't ever need to match non-ASCII digit characters, and incorrectly rely on \d to validate as a number.
This policy doesn't take into account using the re pragma.
use re '/a'; /\d/; # (still) not ok
Graham Ollis <plicease@cpan.org>
This software is copyright (c) 2019 by Graham Ollis.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
To install Perl::Critic::Plicease, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Perl::Critic::Plicease
CPAN shell
perl -MCPAN -e shell install Perl::Critic::Plicease
For more information on module installation, please visit the detailed CPAN module installation guide.