Coroutine-in-coroutine

[Kriskras99]

How well does this crate work when putting coroutines in coroutines?
And how about doing recursive coroutines?

I might use this to implement a recursive (async) parser/writer (see apache/avro-rs#238 where I currently use manual state machines)

[Amanieu]

Recursive coroutine are fully supported. However in practice it's likely to be (slightly) slower than just using Box<dyn Future> for recursive async functions.

[Kriskras99]

Thanks!