Am 23.02.2016 um 14:02 schrieb Henrique Andrade:
Dear Jack and Allin,
Thanks a lot for your invaluable advices! I really couldn't figure out
these solutions and code improvements by myself.
Let me pick up this old thread: Would it make sense to integrate such a
reasonably optimized powerset function into the extra.gfn package?
(which is now an addon)
thanks,
sven