20 lines
335 B
Scheme
20 lines
335 B
Scheme
(define-library (picrin control list)
|
|
(import (scheme base)
|
|
(picrin control))
|
|
|
|
(define-syntax for
|
|
(syntax-rules ()
|
|
((_ expr ...)
|
|
(reset expr ...))))
|
|
|
|
(define (in m)
|
|
(shift k (apply append (map k m))))
|
|
|
|
(define (yield x)
|
|
(list x))
|
|
|
|
(define (null . x)
|
|
'())
|
|
|
|
(export for in yield null))
|