From: Shashank Date Date: 2004-06-25T02:13:11+09:00 Subject: Re: N Dimensional Hash? "Robert Klemme" wrote in message > Alternatively you can use Arrays as hash keys. I always thought that Arrays cannot be used as hash keys, but after reading your email and re-reading Pickaxe (pg. 207) I learnt that you _can_ use them albeit with a little inconvenience: that you have to call Hash#rehash method to reindex the hash whenever a key hash changes. Thought I should share this insight here. -- shanko