On 07/16/2011 08:59 PM, Matt Benson wrote:
xor(true, false) == true
xor(true, false, true) == false
xor(true, false, true, false) == false
Is this correct?
Follows the usual semantics; cf.:
http://en.wikipedia.org/wiki/Exclusive_or#Associativity_and_commutativity
It would seem that semantically an xor over multiple
nested conditions should mean that exactly one value should evaluate
true in order for the xor operation to yield truth.
Which is in fact the case in the examples you mentioned, but probably you are
thinking of
xor(true, true, true) == true
which is consistent with the algebraic definition, and the behavior of Java's ^ operator for that matter. If you wanted a condition with the semantics you describe, it
should be named something else.
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