;; 2.87, 2.88 ;;;;;;;;;;;;; ;; 汎用演算 ;; ;;;;;;;;;;;;; (define (equ? x y) (apply-generic 'equ? x y)) (define (project x) (apply-generic 'project x)) (define (raise x) (apply-generic 'raise x)) (define (add x y) (apply-generic 'add x y)) …
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