On Jul 14, 7:25 pm, "Dr. Phillip M. Feldman" <pfeld...@verizon.net> wrote: > Current Boolean operators are 'and', 'or', and 'not'. It would be nice to > have an 'xor' operator as well.
Hmm. I don't think 'nice' is sufficient. You'd need to make the case that it's sufficiently useful to justify adding a new keyword 'xor' to the language; I suspect that would be an uphill struggle. :) I'll just note that: (1) It's easy to emulate xor: 'x xor y' <-> bool(x) != bool(y) (2) 'and' and 'or' are special in that they have useful short- circuiting behaviour; xor doesn't have this property (that is, you always need to evaluate *both* operands to determine the result). I'd also guess that 'xor' would be much less used than 'and' or 'or', but maybe that's just a reflection of the sort of code that I tend to write. -- Mark -- http://mail.python.org/mailman/listinfo/python-list
