Using Coroutine Flow in Swift

Question

How can we currently collect Flow from swift?

With the new Support for Kotlin’s suspending functions in Swift flow's collect method gets this rather unwieldy signature in swift

vm.topStoriesFlow.collect(
 collector: Kotlinx_coroutines_coreFlowCollector,
 completionHandler: @escaping (KotlinUnit?, Error?) -> Void
)

Any idea how it might be used or even if its usage is currently supported?

This is an opinion and not an answer. The support for suspend functions is kind of odd. You can't really control the dispatcher or lifecycle. In general, I'd still write a wrapper for general suspend functions rather than use the built-in, and even more so for Flow, you'd want to write something specific to what you're doing. dev.to/touchlab/kotlin-1-4-suspend-functions-209 In simpler cases, I think the suspend function output makes sense, but in "real app" scenarios, I think you'd want more control. — Kevin Galligan
– Kevin Galligan, Commented Sep 4, 2020 at 21:31

Róbert Nagy · Accepted Answer · 2020-10-10 18:49:28Z

6

As Kevin stated one possible and popular approach would be to create a wrapper. You can check out kotlinconf-app/CFlow for more info.

answered Oct 10, 2020 at 18:49

Róbert Nagy

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