NAME

       Perl::Critic::Policy::BuiltinFunctions::RequireSimpleSortBlock - Sort blocks should have a
       single statement.

AFFILIATION

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

DESCRIPTION

       Conway advises that sort functions should be simple.  Any complicated operations on list
       elements should be computed and cached (perhaps via a Schwartzian Transform) before the
       sort, rather than computed inside the sort block, because the sort block is called "N log
       N" times instead of just "N" times.

       This policy prohibits the most blatant case of complicated sort blocks: multiple
       statements.  Future policies may wish to examine the sort block in more detail -- looking
       for subroutine calls or large numbers of operations.

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 v5.18.1                  Perl::Critic::Policy::BuiltinFunctions::RequireSimpleSortBlock(3pm)