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Perl::Critic::Perl::CrUser:ContributednPerlSDocumentationohibitUnlessBlocks(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 v5.24.1  Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks(3)

NAME | AFFILIATION | DESCRIPTION | CONFIGURATION | SEE ALSO | AUTHOR | COPYRIGHT

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