noble (3) Perl::Critic::Policy::BuiltinFunctions::ProhibitReverseSortBlock.3pm.gz

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitReverseSortBlock - Forbid $b before $a in sort blocks.

AFFILIATION

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

DESCRIPTION

       Conway says that it is much clearer to use "reverse" than to flip $a and $b around in a "sort" block.  He
       also suggests that, in newer perls, "reverse" is specifically looked for and optimized, and in the case
       of a simple reversed string "sort", using "reverse" with a "sort" with no block is faster even in old
       perls.

           my @foo = sort { $b cmp $a } @bar;         #not ok
           my @foo = reverse sort @bar;               #ok

           my @foo = sort { $b <=> $a } @bar;         #not ok
           my @foo = reverse sort { $a <=> $b } @bar; #ok

CONFIGURATION

       This Policy is not configurable except for the standard options.

AUTHOR

       Chris Dolan <cdolan@cpan.org>

COPYRIGHT

       Copyright (c) 2006-2011 Chris Dolan.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

perl v5.36.0                               Perl::Critic::Policy::BuiltinFunctions::ProhibitReverseSortBlock(3pm)