C++20 for Programmers: An Objects-Natural Approach, 3rd Edition

18. C++20 Coroutines

Objectives

In this chapter, you’ll:

• Understand what coroutines are and how they’re used.

• Use keyword co_yield to suspend a generator coroutine and return a result.

• Use the co_await operator to suspend a coroutine while it waits for a result to become available.

• Use a co_return statement to terminate a coroutine and return its result, or simply control, to its caller.

• Use the open-source generator library to simplify creating a generator coroutine with co_yield.

• Use the open-source concurrencpp library to simplify creating coroutines with co_await and co_return.

• Become aware of coroutine capabilities being contemplated for future C++ versions.

Outline

18.1 Introduction

18.2 Coroutine Support Libraries

18.3 Installing ...