勢い余って「適用できるメソッドがなければ method-missing を呼び出す」機能を作ってみた． (define-generic method-missing) (define-class <method-missing-generic> (<generic>) ()) (define-method apply-methods ((gf <method-missing-generic>) methods args) (if (null? methods) (apply method-missing gf arg</method-missing-generic></generic></method-missing-generic>…