[n9d] いる？ [n9d] http://practical-scheme.net/wiliki/wiliki2.cgi?Scheme%3a%a5%de%a5%af%a5%ed%a4%ce%b4%ed%b8%b1 [n9d] の (n9d) (define-macro (make-foo x y) `(cons ,x ,y)) (n9d) (define-macro (foo-x foo) `(car ,foo)) (n9d) (define-macro (fo…