このコードは、警告メッセージを除いて、私が望むように機能します。GNU Common Lisp では、他の可能性のある警告メッセージを抑制せずにそのメッセージを抑制するにはどうすればよいですか?
1 (defgeneric zang (x y)
2 (:documentation "they want you to put documentation here"))
3 (defmethod zang ((a number) (b string))
4 (format t "got to zang ((~s number) (~s string))~%" a b))
5 (defmethod zang ((a integer) (b string))
6 (format t "got to zang ((~s integer) (~s string))~%" a b)
7 (when (evenp a)
8 (format t "passing control to the other guy~%")
9 (call-next-method (1+ a) "hoo boy")
10 (format t "returned control from the other guy~%")))
11 (defmethod no-applicable-method (zang &rest args)
12 (format t "no applicable method for (zang ~{~s~^ ~})~%" args))
13 (zang 3.5 "hi")
14 (zang 3 "hi")
15 (zang 4 "hi")
16 (zang "hello" "world")
WARNING: Replacing method #<STANDARD-METHOD (#<BUILT-IN-CLASS T>)> in
#<STANDARD-GENERIC-FUNCTION NO-APPLICABLE-METHOD>
got to zang ((3.5 number) ("hi" string))
got to zang ((3 integer) ("hi" string))
got to zang ((4 integer) ("hi" string))
passing control to the other guy
got to zang ((5 number) ("hoo boy" string))
returned control from the other guy
no applicable method for (zang "hello" "world")
Vatineの親切な返信に応じて編集します。
私はそれを試しましたが、状況は警告から致命的なエラーにエスカレートしました:
(defgeneric zang (x y)
(:documentation "they want you to put documentation here"))
(defmethod zang ((a number) (b string))
(format t "got to zang ((~s number) (~s string))~%" a b))
(defmethod zang ((a integer) (b string))
(format t "got to zang ((~s integer) (~s string))~%" a b)
(when (evenp a)
(format t "passing control to the next guy~%")
(call-next-method (1+ a) "hoo boy")
(format t "returned control from the next guy~%")))
;(defmethod no-applicable-method (zang &rest args)
; (format t "no applicable method for (zang ~{~s~^ ~})~%" args))
(defmethod no-applicable-method ((zang eql #'zang) &rest args)
(format t "no applicable method for (zang ~{~s~^ ~})~%" args))
(zang 3.5 "hi")
(zang 3 "hi")
(zang 4 "hi")
(zang "hello" "world")
*** - DEFMETHOD NO-APPLICABLE-METHOD: Invalid specialized parameter in method
lambda list ((ZANG EQL #'ZANG) &REST ARGS): (ZANG EQL #'ZANG)