Perl::Critic::Policy::References::ProhibitDoubleSigils - Write @{ $array_ref } instead of @$array_ref.
This Policy is part of the core Perl::Critic distribution.
When dereferencing a reference, put braces around the reference to separate the sigils. Especially for newbies, the braces eliminate any potential confusion about the relative precedence of the sigils.
push @$array_ref, 'foo', 'bar', 'baz'; #not ok
push @{ $array_ref }, 'foo', 'bar', 'baz'; #ok
foreach ( keys %$hash_ref ){} #not ok
foreach ( keys %{ $hash_ref } ){} #ok
This Policy is not configurable except for the standard options.
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.