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.