A modern programming language that makes developers happier.

kotlinlang

I have caught `kotlin.TypeCastException` while using coroutine’s `async/await` in `common` when running on iOS. But it works well on Android. Any advice to go about this?

<https://github.com/Kotlin/kotlinx.coroutines/issues/920>

Thanks, I saw the closed issue about using `delay` caused `TypeCastException` but it is actually `IllegalStateException` because the dispatcher doesn’t implement the Delay interface.

So we will have to implement the Deferred&lt;Unit&gt; (Generic is not available K/N) in to a custom dispatcher class?

Are there any examples to go about it?

&gt; Thanks, I saw the closed issue about using `delay` caused `TypeCastException` but it is actually `IllegalStateException` because the dispatcher doesn’t implement the Delay interface.

Could you clarify, do you encounter `TypeCastException` or `IllegalStateException`?

&gt; So we will have to implement the Deferred&lt;Unit&gt; (Generic is not available K/N) in to a custom dispatcher class?

How is `Deferred` related?

&gt;&gt;&gt; Could you clarify, do you encounter `TypeCastException` or `IllegalStateException`?
I encountered `kotlin.TypeCastException` when using `async/await` in `commonMain`
&gt;&gt;&gt; How is `Deferred` related?
<https://github.com/Kotlin/kotlinx.coroutines/issues/470>, The temporary solution to solving `TypeCastException` for using `delay` is to implement `Delay` to the class subclassing `CoroutineDispatcher()`. So if I am not mistaken, the problem to `TypeCastException` to using `async/await` is the implementation of the `Deferred` interface in class that subclass `CoroutineDispatcher()`.

Do you mean `Deferred` or `Delay`?
&gt; Are there any examples to go about it?

I believe there is one in the comments to the issue.