Tie::Hash::StructKeyed - use structures like hashes and arrays as keys to a hash

   use Tie::Hash::StructKeyed;
   tie %hash,  'Tie::Hash::StructKeyed';

   $hash{[1,2,3]} = 'Keyed by listref';

   my $h = { one=>1, two=>2 };
   $hash{$h}      = 'Keyed by hashref';

Tie::Hash::StructKeyed ties a hash so that you can use arrays, hashes or complex structures as the key of the hash.

The current implementation uses YAML to generate the hash-key for the structure. This is possibly the easiest way to get a powerful and flexible key-hashing behaviour.

It does mean that the behaviour for objects is undefined: Two objects with the same representation will hash the same. The same object, after an internal state change may hash differently. Behaviour of objects as keys (or as part of a key) is subject to change in future versions.

osfameron - osfameron@cpan.org

Version 0.03 Apr 14 2005

 This program is free software; you can redistribute it
 and/or modify it under the same terms as Perl itself.

perl perltie