On trying to run this code in playground: <https:/...

# coroutines

[aksh1618]

On trying to run this code in playground: https://pl.kotl.in/r1dZNoYIE, it says "No main method found in project". However, on uncommenting await() on both, it runs. Is this a bug with the playground?

[groostav]

looks like a type inference problem, await is causing runBlocking to return Unit, where before its returning Deferred<Unit>.

[groostav]

try writing fun main() = runBlocking<Unit> {....

[bdawg.io]

Usually the IDE would mark the function as unused. Beyond that, type inference on the main function has almost always been confusing one way or another

[ansman]

I think main can be a suspend fun starting with a recent version of Kotlin

[bdawg.io]

Yes, Kotlin 1.3

[gildor]

Yes, but it’s not exactly the same, you cannot use coroutine builders like launch/async without runBlocking or coroutineContext