Perl::Critic::Policy::References::ProhibitDoubleSigils3pm

Write "@{ $array_ref }" instead of "@$array_ref".

Affiliation

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

Overview

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

Configuration

This Policy is not configurable except for the standard options.

Releases

10 releases since Debian 5.0 (Lenny); the text changed 9 times.

5.0
6.0
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Arch