- 631 名前：デフォルトの名無しさん mailto:sage [04/10/05 23:01:51]
-
SICP を見ながら書いてみました。どうっすか？
(define (foo l)
(define (foo-iter result dir file)
(if (eq? file '())
result
(if (pair? (car file))
(let ((next-dir (string-append dir (caar file) "/")))
(foo-iter (append result (list next-dir))
next-dir
(cdar file)))
(foo-iter (append result (list (string-append dir (car file))))
dir
(cdr file)))))
(let ((dir (string-append (car l) "/")))
(foo-iter (list dir) dir (cdr l))))
