How do I write awaitable types and promise types?

In modern C++, writing awaitable types and promise types allows for more efficient asynchronous programming. This guide provides a basic overview and an example to help you get started.
awaitable types, promise types, C++, asynchronous programming, modern C++
// Example of creating an awaitable type in C++ #include <iostream> #include <coroutine> struct MyAwaitable { struct Awaiter { bool await_ready() { return false; } void await_suspend(std::coroutine_handle<> h) { // Resume the coroutine std::cout << "Awaiting...\n"; h.resume(); } void await_resume() { std::cout << "Resumed!\n"; } }; Awaiter operator co_await() { return Awaiter(); } }; // A simple coroutine that uses MyAwaitable std::coroutine_handle<std::coroutine

awaitable types promise types C++ asynchronous programming modern C++

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