Hello, I have a number of arrays within arrays. Some of them are duplicatess like: [[foo, bar, ru, by], [ru], [bar, foo], [foo, bar, ru, by]] I would like to remove duplicates to end up with: [[foo, bar, ru, by], [ru], [bar, foo]] Is there a Ruby function to do this? Cheers, -- Nick Black -------------------------------- http://www.blacksworld.net