1. xor
- Posted by jiri babor <jbabor at PARADISE.NET.NZ>
Oct 28, 1998
-
Last edited Oct 29, 1998
-- bred for speed. jiri
function xor(object a, object b)
return not a != not b
end function
2. Re: xor
I'll add an xor keyword for the next release.
Symmetry and completeness seem to demand it.
Currently we have:
keyword function
not ... not_bits()
or ... or_bits()
and ... and_bits()
??? ... xor_bits()
I don't expect that xor will be used much.
I guess this has something to do with the nature of
the logic, and something to do with our lack of a
common word for "xor" in English and other human languages.
Regards,
Rob Craig
Rapid Deployment Software
http://members.aol.com/FilesEu/
3. Re: xor
On Wed, 28 Oct 1998, Robert Craig wrote:
> I'll add an xor keyword for the next release.
> Symmetry and completeness seem to demand it.
> I don't expect that xor will be used much.
> I guess this has something to do with the nature of
> the logic, and something to do with our lack of a
> common word for "xor" in English and other human languages.
But we do. We use "or" to mean "xor" in English. e.g.:
"You may have the Ice-Cream _or_ the Candy-Floss."
This quite obviously means "one _or_ the other, but not both".
Which is the definition for "xor"... :)
What we don't have is an equivalent for the logical "or"!
--
Carl R White -- Final Year Computer Science at the University of Bradford
E-mail...: cyrek- at -bigfoot.com -- Remove the hyphens before mailing. Ta :)
URL......: http://www.bigfoot.com/~cyrek/
Ykk rnyllaqur rgiokc cea nyemdok ymc giququezka caysgr -- B.Q.Vgesa
