We’ll start working on `IO<E, A>` very soon ...

# arrow

[simon.vergauwen]

We’ll start working on IO<E, A> very soon and you could do this then

val session: IO<Unit, String> = IO.just(Unit) // Unit is the same as `None` for `Option` here but could also be a custom domain like with `Either`
fun createSession(): IO<Nothing, Session>
session.handleErrorWith { createSession() }