The c++20 coroutine is a high-performance coroutine solution, but it has not become popular, because there is no encapsulation that satisfies everyone.
   The author provides a set of event-based encapsulation to separate from IO, network, and business code. Developers no longer need to implement coroutine encapsulation and can quickly convert existing asynchronous programs into coroutine programs.


    The author's source code address is£ºhttps://github.com/dou1984/coev