[_old_dude_]

Thanks for taking the time to explain me how it works. So you're right that you can not use a previous state.

And if i want to get the dispatcher directly, i can write a helper function

  function effect(fun) {
    return state => [state, [dispatcher => fun(dispatcher)]]
  }

and use it to access to the dispatcher/updater

  h(
    "button",
    { onclick: effect(updater => setTimeout(() => updater(Decrement), 1000)) },
    "subtract"
  )

Thanks a lot !

[jorgebucaran]

Basically, yes!

In practice, we don't advocate users to reach out for dispatch, as Hyperapp intends to provide all the fx/subscriptions building blocks you need to create the right abstractions and stay within the safe, declarative side of things.

The reality is, though, that crafting these building blocks takes time and thought, so we don't have them all yet. But people in the community have created fx/sub libraries that are already available, see e.g. this one: https://github.com/okwolf/hyperapp-fx that

Cheers!