C++20 for Programmers, 3rd Edition

Chapter 16. C++20 Modules: Large-Scale Development

Objectives

In this chapter, you’ll:

■ Understand the motivation for modularity, especially for large software systems.

■ See how modules improve encapsulation.

■ import standard library headers as module header units.

■ Define a module’s primary interface unit.

■ export declarations from a module to make them available to other translation units.

■ import modules to use their exported declarations.

■ Separate a module’s interface from its implementation by placing the implementation in a :private module fragment or a module implementation unit.

■ See what compilation errors occur when you attempt ...