July 24, 2009
12:40 a.m.
[Andy Kish]
set_intersection = set.universal() for s in sets: set_intersection &= s
-1 This complicates the API and the implementation for very little benefit (saving you from writing a tiny, clear helper function for an uncommon use case). Currently, sets enjoy a near zero learning curve. That would be lost by adding set.universal() whose semantics are not immediately obvious -- for example, with s=set.universal() what is the meaning of list(s) or frozenset(s) or s.pop(); what is its repr value; and what is s^set('abc') or s-set('abc') or other operations? You may be able to come-up with definitions that work, but those won't be intuitive to most users. Raymond