Advertisement
brlewis

Scheme syntax equivalent to Javascript for()

Apr 12th, 2011
116
0
Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
Scheme 0.49 KB | None | 0 0
  1. (define-syntax for
  2.   (syntax-rules ()
  3.     ((for ((var init) condition step) expr ...)
  4.      (let ((var init))
  5.        (let loop ()
  6.          (if condition
  7.              (begin
  8.                (begin expr ...)
  9.                step
  10.                (loop))))))))
  11.  
  12. (define (test-for)
  13.   (let ((v (make-vector 10)))
  14.     (for ((i 0) (< i 10) (set! i (+ 1 i)))
  15.       (vector-set! v i (lambda () i)))
  16.     (for ((i 0) (< i 10) (set! i (+ 1 i)))
  17.       (display ((vector-ref v i)))
  18.       (newline))))
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement