Hello to all How can I define an interface for this method ` kotlinlang #coroutines

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Alexjok

03/04/2019, 9:16 AM

Hello to all! How can I define an interface for this method

suspend fun CoroutineScope.removeDuplicateTerminal(objectId: MutableList<Int>, token: String) = async { }

antonis

03/04/2019, 9:24 AM

Hello. I don’t think an extension function can be extracted in an interface

What is your use case?

Alexjok

03/04/2019, 9:27 AM

I use it in spring and want to make an autowired implementation through the interface.

antonis

03/04/2019, 9:28 AM

It seems that I’m wrong. This looks valid

interface YourInterface { suspend fun CoroutineScope.removeDuplicateTerminal(objectId: MutableList<Int>, token: String) } class YourClass: YourInterface { override suspend fun CoroutineScope.removeDuplicateTerminal(objectId: MutableList<Int>, token: String) { } }

Alexjok

03/04/2019, 9:45 AM

Thank! I hurried with the question 🙂

suspend fun CoroutineScope.removeDuplicateTerminal(objectId: MutableList<Int>, token: String): Deferred<Unit>

👍 1

tseisel

03/04/2019, 4:16 PM

If your function starts a coroutine that doesn't need to return a result, you may consider returning a

Job

instead of

Deferred<Unit>

, replacing

async

with

launch

. You can then

job.join()

to wait for the coroutine to complete its work.

👍 1

Alexjok

03/04/2019, 5:27 PM

Yes, you are right! Thank you

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