Actually you already have an and/or operator (or). The English
equivilent for "or" in perl is "xor". Examine:
Take this or that (NB this implies you cannot take both, but you must
take one).
take table (instead of truth table)
left left = not allowed (false)
left took = allowed (true)
took left = allowed (true)
took took = not allowed (false)
Compare this with xor's truth table:
false false = false
false true = true
true false = true
true true = false
Take this and/or that (NB this implies you can take one or both but you
must take one).
take table
left left = not allowed (false)
left took = allowed (true)
took left = allowed (true)
took took = allowed (true)
Compare this with or's truth table:
false false = false
false true = true
true false = true
true true = true
On 07 Jun 2001 18:39:32 -0400, Travis Smith wrote:
> <snip src="Chas Owens">
> Either you or I (or maybe both us) have a really dirty mind.
> <snip>
>
> Isn't that like:
> (true != 0)
>
> You know, there's no and/or operator. In ksh you do have the |& - but that's
> something different.
>
> Completely useless, but I want a and/or operator.
>
> ~Travis Smith
> Systems Admin
> finger sage at post891 dot org
> for pgp public key
> tazium at yahoo dot com
>
> "Please remember, life is not life without a death to embrace at the end."
--
Today is Pungenday, the 12nd day of Confusion in the YOLD 3167
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