Is there a more idiomatic way to create a child scope from a parent scope?

val parentScope = CoroutineScope(Dispatchers.Default)
 val childScope = parentScope + Job(parent = scope.coroutineConext[Job]!!)

parentScope.newCoroutineContext(Job(parentScope.coroutineContext[Job]))

is probably more idiomatic, and the closest I could find to what actually happens

My concern is that it would be easy to accidentally break structured concurrency by doing:

val parentScope = CoroutineScope(Dispatchers.Default)
val childScope = parentScope + Job()

Might want to 👍 this issue: https://github.com/Kotlin/kotlinx.coroutines/issues/1485

Yeah, I think the team picked the wrong default behavior here unfortunately. Definitely a thumbs up!

I mean, how would it work "right" here?

CoroutineScope(...)

is a generic, non-suspend constructor. How can it figure out what the parent Job is?