As far as I can see the intersection problem is On*Ologn which make scaling it problematic. There appear to be spcial cases where this can be reduced to On which allow you to deal with an infinitely large data set in finite time provided you have the horsepower.

It was interesting to see how bad subst was in the code above as compared to a straight unpack (~ 40x slower). Oh for a world full of fun problems to solve. Anyway back to the day to day drudgery ;-)

In reply to Re^7: Byte allign compression in Perl.. by tachyon-II
in thread Byte allign compression in Perl.. by MimisIVI

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