is there a way to wait for not yet started coroutine? I want to achieve something similar to `yield`...

# coroutines

[Maciek]

is there a way to wait for not yet started coroutine? I want to achieve something similar to yield but with the coroutine that'll be started in the future

[octylFractal]

I don't get what you mean by something similar to yield()? are you talking about the Sequence yield() or the top-level yield()?

[octylFractal]

regardless, it sounds like you probably want to use CompleteableDeferred

[Maciek]

top-level yield

[octylFractal]

yield doesn't wait for anything though

[octylFractal]

https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/yield.html

[Maciek]

thanks! Will checkout completable deffered

[streetsofboston]

What about a call to CoroutineScope.async(start=LAZY)?

This will return a Deferred<T> and the Coroutine won't yet be running. It will start only after calling await() , start() (and some other methods) on it.

https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/async.html

[Maciek]

oo that's cool, it's really close to something that I wanted to achieve, thanks!
I was trying to avoid having some handle/object on coroutine that needs to do the waiting and was wondering if it can be automagically done through some await or yield mechanism under the hood. But I guess it's close enough

[bdawg.io]

Coroutines try to stop being automagical beyond the suspend keyword :)

[Maciek]

good point, I guess it's better to keep things simple 🙂