http://qs321.pair.com?node_id=35209


in reply to Answer: set theory w/hashes? arrays? done quickly?
in thread Data Structures

I don't really know how to remove elements from the hash.

That reminded me that you can subtract %h2 from %h1 via:

delete @h1{ keys %h2 };

        - tye (but my friends call me "Tye")