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這是我目前有:如何編寫規則來檢測剪輯中實例的刪除?
(defclass classA (is-a USER) (role concrete))
(defclass classB (is-a USER) (role concrete)
(slot a (type INSTANCE)))
(defrule classA-delete
?binstance <- (object (is-a classB) (a ?a&~:(instance-existp ?a)))
=>
(send ?binstance delete))
但是當我刪除ClassA的實例的規則不火。