Hi Edward, thanks that is very interesting. If these should turn out not to be usable for some reason, do you happen to know of alternatives? Günther Am 17.09.10 19:49, schrieb Edward Z. Yang:
Excerpts from Günther Schmidt's message of Fri Sep 17 13:27:45 -0400 2010:
I'd want to create a EDSL where I want to be able to statically ensure that expressions can only be built according to a particular "state".
Like in a network application, SMTP client for example, where I can only issue commands if the application is in a certain state.
Are there any Haskell examples for this sort of thing?
Hello Gunther,
I believe what you are describing is called "session types". There are several session type encodings on Hackage: sessions, simple-sessions and full-sessions. However, I don't think they're really ready to be used on actual projects.
Cheers, Edward