What's a good way to compare a list to a collection of other lists to see whether it's already present in the collection?
From a collection of lists, I want to keep only one instance of each unique list.
Also, I would have to treat the lists as 'unordered' so that "1 2 2 3 4" is considered as being the same as "2 4 3 2 1", and only one of them will be kept.
thanks,
Tim