I had the same thought when reading through Mastering Algorithms with Perl, but I'm actually working with strings here. I can't think of a cheap way to map strings to bits that would work for this. It may be worth trying to keep track of integers for these since I could probably do it cheaply as they are added to my database and then the union could be done this way.

In reply to Re^2: better union of sets algorithm? by perrin
in thread better union of sets algorithm? by perrin

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