can i launch a new coroutine inside a suspending function with the same scope the suspending functio...

# coroutines

[Adriano Celentano]

can i launch a new coroutine inside a suspending function with the same scope the suspending function was called ? sth like this

suspend fun test() {
   suspendingFunctionScope.launch {
      ...
   }
}

[Fudge]

You can make test an extension function on a coroutineContext

[tseisel]

Yes, you can wrap your launch call into a coroutineScope block:

suspend fun test() = coroutineScope {
    launch {
        ...
    }
}

Note that the test function will not return before the launched coroutine is completed. If that's not what you want, you should consider making test a non-suspending extension of CoroutineScope, which is the usual way to define a function that starts a coroutine:

fun CoroutineScope.test()

[Adriano Celentano]

is it possible to have this somehow object oriented like this ?

class GameEngine {
    fun CoroutineScope.start() {
...
}

[tseisel]

You can do that, but it's not very handy. You would have to write something like this:

val engine = GameEngine()
with(engine) {
    scope.start()
}

This is because a member function can (normally) have only one receiver.
Something like

fun startIn(scope: CoroutineScope)

would be better. You can also pass a CoroutineScope as a constructor parameter of your engine, provided the engine has the same lifetime as the passed scope.

[Adriano Celentano]

thank you now its clear to me 👍