I think Mitch Christensen wrote:

> I want a rule that will only match the assignment fact with key=child.


(defrule find-singletons
  ;; There's an assignment with key k and value v
  ?a <- (assignment (key ?k) (value ?v))

  ;; and no other assignment has the same
  ;; key but a different value
  (not (assignment (key ?k) (value ~?v)))

  =>
  ;; ?a is a singleton assignment
  )




---------------------------------------------------------
Ernest Friedman-Hill  
Advanced Software Research          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]
--------------------------------------------------------------------

Reply via email to