In the structured concurrency example for Android ...

# coroutines

[travis]

In the structured concurrency example for Android (https://github.com/Kotlin/kotlinx.coroutines/blob/master/ui/coroutines-guide-ui.md#structured-concurrency-lifecycle-and-coroutine-parent-child-hierarchy), Dispatchers.Main is added to the job to make it so the dispatcher used for child coroutine builders will be Dispatchers.Main (correct me if I'm wrong).

Which dispatcher is used if the + Dispatchers.Main portion is omitted?

override val coroutineContext: CoroutineContext 
    get() = job

[elizarov]

The default one is used by default

[travis]

That's what I speculated but it wasn't immediately obvious looking through the source code. Thanks for confirming!