title: Can Perl store an array reference as a hash key?
body: <p>Consider the following:</p>
  
  <pre><code>use strict;
  use Data::Dumper;
  my $hash={['one','two']=&gt;[1,2]};
  print Dumper($hash);
  =for comment
  prints....
  $VAR1 = {
            'ARRAY(0x35358)' =&gt; [
                                 1,
                                 2
                                ]
           };
  =cut
  </code></pre>
  
  <p>As an alternative, the key in the hash can be constrcuted as "one\ttwo" and then I can separate out the elements of the key based on tab delimiter (in latter part of the program while munging the data). </p>
  
  <p>Any advice on how to store the key as a array reference?</p>