From: Trans Date: 2006-12-27T04:05:45+09:00 Subject: Re: Hash with two identical keys? thanks Ara and Jon, I see what your saying. I was using #== not #eql? in comparing the keys. So I see why it's faling now. How do I get aorund this? I'm caching object based on therr initialization paramaters, which has to be an array. Is there a simpler way or do I have to do something like: class Parameters < Array alias :eql? :== end T.