someAsyncJobHere not to cancel the outer coroutine...

# coroutines

[myanmarking]

someAsyncJobHere not to cancel the outer coroutine. how would i define such function ?

[kingsley]

You can use launch/async or most of the other existing coroutine builders depending on which one suits your needs:

fun CoroutineScope.someAsyncJobHere() = launch {
  // some code
}

This function returns a Job that you can then cancel (or not) later

[myanmarking]

yes, but if i cancel the job, won't it cancel the rest of the execution inside main.launch ?

[myanmarking]

please check edited code sample, i don't want it to cancel suspendFunc3

[myanmarking]

fun startStepsSync(): CoroutineScope {
        val scope = CoroutineScope(Dispatchers.Main)
        scope.launch { 
            // something here
        }
        return scope
    }

[myanmarking]

would canceling this job also cancel the mainScope?

[louiscad]

Just test it, it'll improve your understanding. Spoiler: canceling a child coroutine doesn't cancel the parent. Crashing a child coroutine does cancel the parent (a non CancellationException).

[myanmarking]

ya, thanks

[myanmarking]

in that case, i don't need the inner scope at all, right ?

[louiscad]

If you don't seem to need it, then you probably don't.

[streetsofboston]

@myanmarking https://medium.com/the-kotlin-chronicle/coroutine-exceptions-3378f51a7d33
and look for the “CancellationException” section.