Hi guys, this is a question of concept. Under which circumstances would it be beneficial to `launch`...

# coroutines

[jordigarcl]

Hi guys, this is a question of concept. Under which circumstances would it be beneficial to launch a single coroutine in a runBlocking scope?

Example

fun foo() {
	runBlocking {
		launch {
			// some suspend functions
		}
	}
}

Instead of

fun foo() {
	runBlocking {
		// some suspend functions
	}
}

[streetsofboston]

Just one launch, not much benefit.
But if you do multiple launch-es, you can do stuff in parallel and have runBlocking return when they are all done.

[jordigarcl]

That's what I thought. Is there any benefit for a single launch though?

[andylamax]

There is no benefit at all for a single launch.

[elizarov]

No benefit. A single launch inside runBlocking should be totally transparent.

[andylamax]

The man himself hath spoken

[streetsofboston]

To be sure; a runBlocking with j*ust* a single launch is totally transparent, but it could still have one launch and some other code, which then would happen in parallel. 🙂

runBlocking {
    launch { .... }
    here() 
    is()
    someOtherCode()
}