On May 30, 2005, at 2:48 PM, Yair Benita wrote: > I usually combine 2 sets using union but one set is much smaller > than the other. It is better to do it using "add", as suggested, > and that is my solution. I didn't realize that using "add" will not > create redundancy, as you said these are like keys in a dictionary > so no duplicates can occur. I suppose "union" is worth doing when I > have two big sets to be combined.
Union is for combining two sets and creating a third set -- which involves a lot of copying and reference counting. If you want to combine two sets, simply mutating one, use update. -bob _______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG@python.org http://mail.python.org/mailman/listinfo/pythonmac-sig
