1 (use-modules (ice-9 rdelim))
2
3 (define (show l) (display l))
4
5 (define (read-two-lines)
6 (let ((count (read-line))
7 (l (read-line)))
8 (show l))) ; or (show count)
9
10 (read-two-lines)
上面的代码无法将第二行读入 l。相反,它只是两次读取相同的值:-
scheme@(guile-user)> (load "test.scm")
line1
line2
line1
当 line1 后跟 line2 作为输入时,它显示 line1 作为输出而不是 line2 。这里发生了什么?