2019-11-13から1日間の記事一覧
(define (take-inf n s-inf) (cond ((and n (zero? n)) '()) ((null? s-inf) '()) ((pair? s-inf) (cons (car s-inf) (take-inf (and n (sub1 n)) (cdr s-inf)))) (else (take-inf n (s-inf)))))
(define (take-inf n s-inf) (cond ((and n (zero? n)) '()) ((null? s-inf) '()) ((pair? s-inf) (cons (car s-inf) (take-inf (and n (sub1 n)) (cdr s-inf)))) (else (take-inf n (s-inf)))))