Oddly enough there's the Array::Compare module (by our own davorg) for comparing arrays, or you could use the Data::Compare module for comparing any ol' data (yes, including hashes). You could also check out the perlfaq for information on how to hand-roll array and hash comparison routines. Also check out the Q&A section for even more info on how to do array and hash comparision. You're spoilt for choice really ;-)
HTH

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broquaint