C++, C#, Python coroutines are all stackless and pretty much equivalent. Lua, Go have stackful coroutines (i.e. one-shot continuations). There are libraries for stackful coroutines in C++ of course.
There is a proposal for executors that would add event loops to C++. In the meantime boost.Asio (also available outside of boost) is one of the best options (the standard proposal was originally based on Asio, and Asio is tracking the standard proposal closely).
There is a proposal for executors that would add event loops to C++. In the meantime boost.Asio (also available outside of boost) is one of the best options (the standard proposal was originally based on Asio, and Asio is tracking the standard proposal closely).