[jcelerier]

> Eh, I think coroutines are a convenient way to achieve concurrency and parallelism.

but how often do you need concurrency and parallelism outside of handling network requests and performing some complicated math algorithm (which may be in a lib that you don't touch anyways, e.g. FFT>) ?

e.g. most UI code has to run on the main thread due to macOS / Windows limitations, and in most UI software it is extremely rare to have the kind of chains of callbacks whose readability gets improved by coroutines.

[gpderetta]

Coroutines are not really for parallelism. I doubt you'll see them much around math heavy code. Possibly if someone implements some Cilk style work stealing executor...