How to check parameter variable? Post: 74613

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perl::critic::policy::controlstructures::prohibituntilblocks

Perl::Critic::Policy::ControlStructures::ProhibitUntilBlUser(Contributed Perl DocPerl::Critic::Policy::ControlStructures::ProhibitUntilBlocks(3pm)

NAME

       Perl::Critic::Policy::ControlStructures::ProhibitUntilBlocks - Write "while(! $condition)" instead of "until($condition)".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Conway discourages using "until" because it leads to double-negatives that are hard to understand.  Instead, reverse the logic and use
       "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".

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 v5.14.2							    2012-06-07	 Perl::Critic::Policy::ControlStructures::ProhibitUntilBlocks(3pm)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Help with making a parameter check script.

Discussion started by: GCTEII

2. Shell Programming and Scripting

Check if parameter passes in contains certain string

Discussion started by: bcunney

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Reading a variable from parameter file

Discussion started by: abhinav192

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How to check what are the current kernel parameter settings

Discussion started by: newbie_01