Summary
In this chapter, you have seen how to use C++ coroutines for building generators using the keywords co_yield and co_return. To better understand how C++ stackless coroutines differ from stackful coroutines, we compared the two and also looked at the customization points that C++ coroutines offer. This gave you a deep understanding of how flexible C++ coroutines are, as well as how they can be used to achieve efficiency. Stackless coroutines are closely related to state machines. By rewriting a traditionally implemented state machine into code that uses coroutines, we explored this relationship and you saw how well compilers can transform and optimize our coroutines to machine language.
In the next chapter, we will continue to discuss coroutines by focusing on asynchronous programming and will deepen your understanding of the co_await keyword.
