I think Amit Chopra wrote: > > > defrule resolve-commitment > (and (?x) (commitment (cond ?x))) => (printout t "resolved" crlf)) > > Basically I'm trying to match a condition of the commitment (money) > with an event (money). If such an event is found, the commitment is > said to be resolved. I expect ?x to be bound to money when the > rule fires.
You can't do that. The "head" of a fact is a fixed constant like a Java class name; it's not data like the contents of a slot. You can't match the head of a fact (at least not in current versions of Jess.) This is true for both ordered and unordered facts. The alternate implementation you proposed is the way to do this. --------------------------------------------------------- Ernest Friedman-Hill Science and Engineering PSEs Phone: (925) 294-2154 Sandia National Labs FAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov -------------------------------------------------------------------- To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] --------------------------------------------------------------------
