In Jess, parentheses always have special meaning; most of the time,
they mean "this is a function call". So (?slide) would mean "call
what's in ?slide as a function", which is definitely not what you
want. The "+" function, like all Jess functions, is called using
prefix notation; the quantity "three more than ?slide" is written (+ ?
slide 3) .
On Aug 18, 2009, at 9:24 AM, John Chrysakis wrote:
Hello to all community,
I am trying to bind an int variable e.g slide
and then to use it's value plus a different number,
e.g slide + 2, slide +3.
How I Can Do that, the following doesn't work.
(defrule Rule1
...
=>
(bind ?slide 4)
(calling goToSlide "p1" ?slide)
(calling goToSlide "p2" ((?slide)+1))
(calling goToSlide "p3" ((?slide)+6))
...
)
thank you in advance!
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Ernest Friedman-Hill
Informatics & Decision Sciences Phone: (925) 294-2154
Sandia National Labs
PO Box 969, MS 9012 [email protected]
Livermore, CA 94550 http://www.jessrules.com
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