---
name: "Perl::Critic::Policy::References::ProhibitDoubleSigils"
section: "3pm"
platform: "linux"
package: "perl-perl-critic"
version: "1.156-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Perl::Critic::Policy::References::ProhibitDoubleSigils"
---

# Perl::Critic::Policy::References::ProhibitDoubleSigils(3pm)

Write "@{ $array\_ref }" instead of "@$array\_ref".

## NAME

Perl::Critic::Policy::References::ProhibitDoubleSigils - Write "@{ $array\_ref }" instead of "@$array\_ref".

## AFFILIATION

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

## DESCRIPTION

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.

## AUTHOR

Jeffrey Ryan Thalhammer \<jeff@imaginative-software.com\>

## COPYRIGHT

Copyright (c) 2005-2023 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.