Why can't I xor strings?
aleaxit at yahoo.com
Mon Oct 11 15:15:19 CEST 2004
Grant Edwards <grante at visi.com> wrote:
> Probably so, but that doesn't support the arguement that
> there's something wrong with a logical xor argument coercing
> it's operands to boolean values unless one also argues that
> the logical "and", "or" and "not" operators should also not
> coerce their operands to booleans.
One of the greatest sources of usefulness for 'and' and 'or' is exactly
that these operators _don't_ coerce their operands -- they always return
one of the objects that are given as their operands, never any
'coercion' of it. This lets one code, e.g.,
k, v = (onedict or another).popitem()
k, v = onedict.popitem()
k, v = another.popitem()
Operator 'xor' couldn't possibly ensure this useful behavior, alas.
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