centos man page for perl::critic::policy::controlstructures::prohibitunlessblocks

Query: perl::critic::policy::controlstructures::prohibitunlessblocks

OS: centos

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

Perl::Critic::Policy::ControlStructures::ProhibitUnlessBUsersContributed Perl DocuPerl::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
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 v5.16.3 2014-06-09 Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks(3)
Related Man Pages
perl::critic::policy::controlstructures::prohibitunreachablecode(3) - centos
perl::critic::policy::controlstructures::prohibitcascadingifelse(3) - centos
perl::critic::policy::controlstructures::prohibitdeepnests(3) - centos
perl::critic::policy::controlstructures::prohibitunlessblocks(3pm) - debian
perl::critic::policy::controlstructures::prohibitunreachablecode(3pm) - debian
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