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Re^5: 'xor' operator is not a sibling to 'or' and 'and'?

by soonix (Canon)
on Dec 19, 2019 at 09:36 UTC ( #11110385=note: print w/replies, xml ) Need Help??


in reply to Re^4: 'xor' operator is not a sibling to 'or' and 'and'?
in thread 'xor' operator is not a sibling to 'or' and 'and'?

regarding "Boolean", see "Scalar values" in perldata:
A scalar value is interpreted as FALSE in the Boolean sense if it is undefined, the null string or the number 0 (or its string equivalent, "0"), and TRUE if it is anything else. The Boolean context is just a special kind of scalar context where no conversion to a string or a number is ever performed. Negation of a true value by ! or not returns a special false value. When evaluated as a string it is treated as "" , but as a number, it is treated as 0. Most Perl operators that return true or false behave this way.
You seem to think upon a "really" boolean datatype with exactly two distinct values. This is not the case here.
  • Comment on Re^5: 'xor' operator is not a sibling to 'or' and 'and'?

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