SICP の 2.23 の練習問題のやつ.scm

sicp_2_23.scm

(define (for-each proc items)
  (if (null? items)
    #f
    (begin
      (proc (car items))
      (for-each proc (cdr items)))
  )
)
(for-each (lambda (x) (newline) (display x)) (list 57 321 88))

gosh> (for-each (lambda (x) (newline) (display x)) (list 57 321 88))
57
321
88#f

何もしない。のやり方がわからなくて #f にした...。