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Perl::Critic::Policy::BuiltinFPerl::Critic::Policy::BuiltinFunctions::ProhibitReverseSortBlock(3)

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 v5.16.3		      Perl::Critic::Policy::BuiltinFunctions::ProhibitReverseSortBlock(3)
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