syndicate-2017/racket/syndicate/examples/example-meta-drop.rkt

14 lines
458 B
Racket
Raw Normal View History

2016-04-01 23:53:46 +00:00
#lang syndicate
2015-03-21 22:38:37 +00:00
;; Analogous to nc-incremental-meta-drop.rkt in the Redex model.
;; Demonstrates (hopefully) correct processing of meta-interests when dropping a patch.
(spawn-dataspace
2015-03-21 22:38:37 +00:00
(spawn (lambda (e u)
(match u
[0 (transition 1 '())]
[1 (transition 2 (retract 'a #:meta-level 1))]
[_ #f]))
0
(patch-seq (assert 'a #:meta-level 1)
(assert (observe 'a) #:meta-level 1))))