syndicate-2017/racket/syndicate/examples/mini-echo.rkt

26 lines
633 B
Racket

#lang syndicate/core
(struct echo-req (body) #:prefab)
(struct echo-resp (body) #:prefab)
(actor (lambda (e count)
(match e
[(message (echo-req body))
(transition (+ count 1)
(message (echo-resp body)))]
[_ #f]))
0
(sub (echo-req ?)))
(actor (lambda (e s)
(match e
[(message (echo-resp body))
(printf "Received: ~v\n" body)
#f]
[_ #f]))
(void)
(list (sub (echo-resp ?))
(message (echo-req 0))
(message (echo-req 1))
(message (echo-req 2))))