The following code example is taken from the book
C++20 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2021
The code is licensed under a
Creative Commons Attribution 4.0 International License.
// raw code
struct CoroTask::promise_type {
auto get_return_object() { // init and return the coroutine interface
return CoroTask{CoroHdl::from_promise(*this)};
}
auto initial_suspend() { // initial suspend point
return std::suspend_always{}; // - suspend immediately
}
void unhandled_exception() { // deal with exceptions
std::terminate(); // - terminate the program
}
void return_void() { // deal with the end or co_return;
}
auto final_suspend() noexcept { // final suspend point
return std::suspend_always{}; // - suspend immediately
}
};