[dataflow]

Do you mean C++ coroutines, or coroutines in general? If you're new to the concept I would try to start with Python's, then Javascript or C#. C++'s is way more complicated.

[pjmlp]

Note that C# and C++ are quite similar, the biggest difference are the lifetime gotchas and not having coroutines runtime on the standard library.

Their design has a common source, and the magic methods for awaitables as well.