12 lines
291 B
Common Lisp
12 lines
291 B
Common Lisp
(defstruct super foo)
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(defstruct (sub (:include super)) bar)
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(defgeneric frob (thing))
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(defmethod frob ((super super))
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(format t "~&Super has foo = ~w." (super-foo super)))
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(defmethod frob ((sub sub))
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(format t "~&Sub has foo = ~w, bar = ~w."
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(sub-foo sub) (sub-bar sub)))
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