Question: only states and events (no side effects)

[Dario-GoldenSpear]

Hi,

I have implemented and ad-hoc Bluetooth connection state machine based on states and events (no need for SideEffects / actions for the moment). I was thinking about switching that state machine to a version created using this library.

Is it possible to create such state machine, or as a minimum I should have at least 1 SideEffect (a dummy one for example)?

Thanks in advance.

[dave08]

I think you can just use Nothing as the side-effect type, and just not pass them at all. (But then, I'm pretty new to this library too....)

[Dario-GoldenSpear]

Thanks for the suggestion @dave08 . I'm currently not working on this, but should I have some time to try it, I will confirm what you mention here.

[felixwiemuth]

Using Nothing for type parameters which you aren't going to use is the correct way. This ensures that there is no way you can accidentally use a side-effect parameter anywhere in your statemachine definition. In transitionTo and anywhere else the effect parameter is optional and the Nothing type won't allow you to pass anything but null.