Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks - Write if(! $condition) instead of unless($condition).
This Policy is part of the core Perl::Critic distribution.
Conway discourages using unless because it leads to double-negatives
that are hard to understand. Instead, reverse the logic and use if.
unless($condition) { do_something() } #not ok
unless(! $no_flag) { do_something() } #really bad
if( ! $condition) { do_something() } #ok
This Policy only covers the block-form of unless. For the postfix
variety, see ProhibitPostfixControls.
This Policy is not configurable except for the standard options.
Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls
Jeffrey Ryan Thalhammer <thaljef@cpan.org>
Copyright (c) 2005-2008 Jeffrey Ryan Thalhammer. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license can be found in the LICENSE file included with this module.