Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks.3pm

Langue: en

Autres versions - même langue

Version: 2008-03-08 (mandriva - 01/05/08)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

Perl::Critic::Policy::ControlStructures::ProhibitUnlessBlocks

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".

SEE ALSO

Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls

AUTHOR

Jeffrey Ryan Thalhammer <thaljef@cpan.org> Copyright (c) 2005-2008 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.