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kotlinlang

Hi, I'm considering moving to coroutines from rx. From what I gather its almost 1:1 mental model
```suspend functions sequences = flatmaps of Singles
Flow = cold Observable
StateFlow = hot Observable
Dispatcher = Scheduler
Job = Disposable```
So the "only" thing coroutines seem to have on rx is
*Ergonomics* of suspend functions, vs boilerplate of flatmaps
Flow can emit nulls
Coroutine variants of Semaphore, Mutex allow to easier limit paralelism
And ability do "hack" stuff together myself from primitives, other than waiting for rx gods to give me an operator