hi if I m given a `scope` called `bigScope` how can I create kotlinlang #coroutines

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Title

m

Mikołaj Kąkol

03/19/2020, 7:14 AM

hi, if I'm given a

scope

called

bigScope

how can I create a scope

smallScope

that will be canceled when

bigScope

is cancelled?

o

octylFractal

03/19/2020, 7:15 AM

CoroutineScope(Job(bigScope.coroutineContext[Job]))

?

m

Mikołaj Kąkol

03/19/2020, 7:18 AM

val smallScope = CoroutineScope(Dispatchers.Main + bigScope.coroutineContext)

like that?

is Job necessary?

val smallScope = CoroutineScope(Dispatchers.Main + Job(bigScope.coroutineContext[Job]))

compiles too, could you point a difference?

o

octylFractal

03/19/2020, 7:19 AM

yes, the

Job(parent: Job)

constructor means structured concurrency

basically it declares that

smallScope

is a child of

bigScope

rather than the same Job as

bigScope

m

Mikołaj Kąkol

03/19/2020, 7:20 AM

great, thankyou 🙂

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