For hash refs: 

  my $hash_ref = {};            # valid hash_ref, empty hash
  $hash_ref->{'key'} = 'value'; # hash now contains one k-v pair
                                # but hash_ref unchanged

[download]
The following code is just dereferencing an array ref. 
  @{$q_mail}

[download]

In reply to Re: Building Hashrefs by pbeckingham
in thread Building Hashrefs by Anonymous Monk

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