Steven D'Aprano wrote:
On Tue, 14 Jul 2009 11:25:08 -0700, Dr. Phillip M. Feldman wrote:
Current Boolean operators are 'and', 'or', and 'not'. It would be nice
to have an 'xor' operator as well.
I've often wished there was too, for the sake of completeness and
aesthetics, I'd love to be able to write:
a xor b
instead of defining a function xor(a, b).
Unfortunately, outside of boolean algebra and simulating electrical
circuits, I can't think of any use-cases for an xor operator. Do you have
any?
I was pondering on this yesterday, and the only case I've
come across in my code -- and it's reasonably common --
is checking that one and only one of two params has been
passed. I have code which wants, say, an id or a name
but doesn't want both. It's hardly difficult to write the
check even now, but an built-in xor would make it fractionally
cleaner.
TJG
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