Summary - Advanced coroutines

Combine CoroutineScope, Dispatchers and Job to write a parallel job manager.

Summary - Advanced coroutines

This group covered CoroutineScope, Dispatchers, Job, SupervisorJob and CoroutineExceptionHandler. Their common thread: each manages some part of a coroutine's lifecycle and environment.

The next lesson has a mini task that brings these pieces together. Scope sets the boundary, dispatcher the thread, Job the waiting, SupervisorJob the isolation and the handler the error path. Together they form robust concurrent code.

Exercise Combine all pieces

Open runBlocking. Write val job = launch { println("Started") }. Wait with job.join(). Then print println("Done").

Show example solution

fun main() = runBlocking {
    val job = launch {
        println("Started")
    }
    job.join()
    println("Done")
}

Test yourself

Which one relates to SupervisorJob?
- Dispatchers.IO
- Isolates child failures
- runBlocking
- launch
Show answer

Isolates child failures — SupervisorJob keeps one child's failure from spreading to siblings.
Match all concepts

CoroutineScope

Scope
Dispatchers

Thread choice
Job

Waiting
SupervisorJob

Isolation
CoroutineExceptionHandler

Error catching

Next lesson: StateFlow

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