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kotlinlang

Do you think passing a `CompletableDeferred` down a `Flow` or a `Channel` (exposed as a `ReceiveChannel`) is a good idea?
The use case is to allow to observe a state (a sealed class instance), and allow an action depending on that state.

Why not just send the state change as a regular value over the channel?

The state change already passes down the flow/channel. What I'm looking for is allowing an action just for that state (obsolete when the state changes).

Is this somewhat like what is used on RxAndroidBle where connecting to a device emits an Observable that represents the connection-setup and then observing that emitted Observable will yield a Connection?

That's common in CSP systems I think. You send a message to a process, and that message contains a dedicated channel just for sending responses back.