Query: perl::critic::policy::builtinfunctions::prohibitvoidmap
OS: debian
Section: 3pm
Links: debian man pages all man pages forum categories
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Perl::Critic::Policy::BuiltinFunctions::ProhibitVoidMap(User Contributed Perl DocumentPerl::Critic::Policy::BuiltinFunctions::ProhibitVoidMap(3pm)NAMEPerl::Critic::Policy::BuiltinFunctions::ProhibitVoidMap - Don't use "map" in void contexts.AFFILIATIONThis Policy is part of the core Perl::Critic distribution.DESCRIPTION"map" and "grep" are intended to be pure functions, not mutators. If you want to iterate with side-effects, then you should use a proper "for" or "foreach" loop. grep{ print frobulate($_) } @list; #not ok print map{ frobulate($_) } @list; #ok grep{ $_ = lc $_ } @list; #not ok for( @list ){ $_ = lc $_ }; #ok map{ push @frobbed, frobulate($_) } @list; #not ok @frobbed = map { frobulate($_) } @list; #okCONFIGURATIONThis Policy is not configurable except for the standard options.AUTHORJeffrey Ryan Thalhammer <jeff@imaginative-software.com>COPYRIGHTCopyright (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::BuiltinFunctions::ProhibitVoidMap(3pm)