Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks
Conway discourages using unless because it leads to double-negatives that are hard to understand. Instead, reverse the logic and use if.
unless
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.
ProhibitPostfixControls
Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls
Jeffrey Ryan Thalhammer <thaljef@cpan.org>
Copyright (c) 2005-2007 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.
To install Perl::Critic, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Perl::Critic
CPAN shell
perl -MCPAN -e shell install Perl::Critic
For more information on module installation, please visit the detailed CPAN module installation guide.