[Python-ideas] Implement __add__ for set and frozenset
arnodel at googlemail.com
Tue Jun 3 21:55:44 CEST 2008
On 3 Jun 2008, at 20:12, Mattias Engdegård wrote:
> Arnaud Delobelle <arnodel at googlemail.com> writes:
>> A ^ (B ^ B) = A but (A ^ B) ^ B = A | B
> No, symmetric set difference is associative.
Sorry, I don't know what came over me. It's obviously associative
because an element is in the symmetric difference if it is in an odd
numbers of sets.
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