A modern programming language that makes developers happier.

kotlinlang

Hey all, been working on a DSL for building finite state machines please check it out if this interests you and ping me if you have any suggestions for improvement
<https://github.com/rossdanderson/finite>

I've also been looking at FSMs a lot lately but where I have been really getting stuck is around not just transitioning from one state to another but in _doing_ something in that transition (and making those side effects atomic and testable).  In your example, the state transitions make complete sense, but other than describing the actions of a phone, nothing is really happening.  If this was actually describing a VOIP app, where would the network calls and UI changes actually live?  Would they need to be added when the DSL is used or are they added to the states/triggers themselves?