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Postings from August 2000
>Next, what subset of the set-theory should be implemented. Obviously you >refer to the basic and / or / xor, but in real practice, the other operators >can be very useful. Chaining operators (especially with array-based-sets) >can be a performance nightmare. Unless you use bitwise operators on bit vectors! Which, on rare occasion, I have certainly used. It is unbelievably fast and unbelievably compact. I think that there are modules that do this sort of thing. The listwise union/intersection/symmetric difference code in the Ram uses hashes for all this, though. --tomThread Previous | Thread Next