Perl::Critic::Policy::ControlStructures::ProhibitUntilBlocks - Write while(! $condition) instead of until($condition).
while(! $condition)
until($condition)
This Policy is part of the core Perl::Critic distribution.
Conway discourages using until because it leads to double-negatives that are hard to understand. Instead, reverse the logic and use while.
until
while
until($condition) { do_something() } #not ok until(! $no_flag) { do_something() } #really bad while( ! $condition) { do_something() } #ok
This Policy only covers the block-form of until. For the postfix variety, see ProhibitPostfixControls.
ProhibitPostfixControls
This Policy is not configurable except for the standard options.
Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
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.
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.