Another option is Data::Denter as a serializer for comparissons. It supports blessed objects and references, in addition to being able to sort hashes by default. Persoanlly, I think the output is a lot easier on the eyes than trying to look at Dumper output too. If I remember right, it can even handle circular references.
-- KILNA - pop music for cyborgs - http://www.kilna.com
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