I’m trying to make a `suspend` function execute it...

# coroutines

[rook]

I’m trying to make a suspend function execute its contents on a specific dispatcher. So far:```
suspend fun getFoo(): Foo? = coroutineScope {
withContext(Dispatchers.IO) { retrieveFoo() }
}```
Is this the best way to go about it?

[octylFractal]

I don't think there's a need to open a new coroutineScope, just doing withContext should work

[rook]

Ah, perfect, thanks!

[gildor]

Also this is enough:

<http://Dispatchers.IO|Dispatchers.IO> { retrieve Foo }

There is invoke operator for Dispatcher

[octylFractal]

Oh, that's pretty fancy.

[Eric Martori]

@gildor is you example equivalent to withContext? Does invoking the Dispatcher propagate the coroutineContext?

[gildor]

Yes, this is just a shortcut for withContext(SomeDispatcher)

[Eric Martori]

I am trying it right now but can't find the invoke operator for CoroutineDispatcher in what version is this available? Or is it not part of the core?

[gildor]

Autocomplete works not so well with invoke operator, I should create an issue about this, but invoke is a part of the core
https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/invoke.html

[Eric Martori]

I see, thank you