How do you “close” a flow? I’m trying to wrap a paginated API call, with ktor, into a flow. I want the flow to emit all pages, and stop emitting once I’ve queried the last page.

cancel the scope it’s launched with

So this would work?

flow {
    emit(page)
    if(page.isLast) {
       cancel()
    }
}

If you’re using the

flow

builder (or

callback/channelFlow

), just return from the lambda. You don’t need to cancel.

once the

flow { .. }

lambda completes, the flow cancels automatically

Oh yeah I forgot about that. I guess I need a repeat in there.

Not on a raw

while

loop, but a lot of the iterable/sequence operators have a

WithIndex

or

Indexed

version that does.