2010/3/8 Raymond Hettinger <pyt...@rcn.com>: ... [snip detailed explanations] >... > In this case, we have an indication that what you really want is > a separate class supporting elementwise binary and unary operations > on vectors (where the vector fields are accessed by a dictionary > key instead of a positional value). > > >> Additionally, were issubset and issuperset considered for this >> interface (not sure whether symmetric_difference would be applicable)? > > If the need arises, these could be included. Right now, you > can get the same result with: "if a - b: ..." > > FWIW, I never liked those two method names. Can't remember whether > a.issubset(b) means "a is a subset of b" or "b issubset of a'. > > > Raymond > -- > Thanks for the further remarks Raymond, initially I thought while investigating new features of python 3, this would be a case for replacing the "home made" solutions with the standard module functionality. Now I can see, it probably wouldn't be an appropriate decision in this case, as the expected usage of Counter with its native methods is different.
As for the issubset, issuperset method names, I am glad, a far more skilled person has the same problem like me :-) In this case the operators appear to be clearer than the method names... regards, vbr -- http://mail.python.org/mailman/listinfo/python-list
