Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks(3)
NAME
Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks - Write
"if(! $condition)" instead of "unless($condition)".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
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".
CONFIGURATION
This Policy is not configurable except for the standard options.
SEE ALSO
Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls(3)
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. 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.
perl v5.28.2 Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks(3)
perl-critic 1.134.0 - Generated Mon Jun 3 10:58:17 CDT 2019