-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 11-01-12 21:26, Gregory Cooper wrote: > Hi Marijn, > > FrTime propagates changes asynchronously. When send-event returns, > there's no guarantee that the event has finished propagating > through the system. And in general, (value-now b) is not > well-defined, since asynchronous processing makes it difficult to > define what "now" means; programs should only call this if they can > tolerate stale values.
Hi Gregory, so just to make sure I understand the implications of this: there is no way to do something like the following: #lang racket (require frtime) (define a (event-receiver)) (define b (event-receiver)) (define a+b (... ??? (merge-e a b))) (send-event a 3) (send-event b 5) (... ??? make sure everything is consistent again) (... ??? get the value 8 out of a+b) Marijn -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk8OnpkACgkQp/VmCx0OL2z8tACffv+uhmEAttZ7YhZ4UStbQR6p bFIAn3KOoI5uxWU+5hbWHxxJLgih8l7M =0Y03 -----END PGP SIGNATURE----- _________________________ Racket Developers list: http://lists.racket-lang.org/dev
