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;;;; Are the following two equivalent, except that in #2, foo-meta is ;;;; not reachable using find-class? ;;;; 1 (defclass foo-meta (standard-class) ()) (defmethod closer-mop:validate-superclass ((class foo-meta) (superclass standard-class)) t) (defclass foo () () (:metaclass foo-meta)) ;;;; 2 (let ((meta (make-instance 'standard-class :name 'foo-meta :direct-superclasses (list (find-class 'standard-class))))) ;; Validate superclass (add-method #'closer-mop:validate-superclass (multiple-value-bind (method-lambda initargs) (closer-mop:make-method-lambda #'closer-mop:validate-superclass (closer-mop:class-prototype (closer-mop:generic-function-method-class #'closer-mop:validate-superclass)) '(lambda (class superclass) t) nil) (apply #'make-instance 'standard-method :lambda-list '(class superclass) :specializers (list meta (find-class 'standard-class)) :function (compile nil method-lambda) initargs))) (setf (find-class 'foo) (make-instance meta :direct-superclasses nil :name 'foo)))