I have come across the following behaviour that may be of interest
to others...
(defglobal ?*myGlobal* = 0)
(deftemplate item
(slot id)
)
(defrule myRule1
?f <- (performRule)
=>
(retract ?f)
(build "(defrule myRule2
?f <- (item (id ?id&:(< ?id 10)) ) ; Note this line...
=>
(retract ?f)
)")
)
If I try
?f <- (item (id ?id&:(< ?id ?*myGlobal*)) )
on the noted line, at runtime, JESS complains of the fact that ?*myGlobal* is not
bound. However, if I instead use the following line
?f <- (item (id ?id&:(< ?id (getMyGlobal))) )
and define
(deffunction getMyGlobal ()
(return ?*myGlobal*)
)
Then everything works fine!
Alan.
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