Hello. Does anyone know why, when using `.asSingle()` on a `Deferred<T>` from the `kotlinx-cor...

# coroutines

[Shan]

Hello. Does anyone know why, when using .asSingle() on a Deferred<T> from the kotlinx-coroutines-rx2 library, why the coroutineContext I pass into .asSingle() can't contain a Job?

[Shan]

I see it throws an IllegalArgumentException but am unclear why.

[satyan]

Because the lifecycle is managed by RX Disposable and not by a context’s Job:

https://github.com/Kotlin/kotlinx.coroutines/blob/4ea40782a8b05c41504fbd26b42339fbda8712c4/reactive/kotlinx-coroutines-rx2/src/RxSingle.kt

[Shan]

Ah okay, that makes sense. Thanks!