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

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 to use non-exported module items.

• Use module partitions to organize modules into logical components.

• Divide a module into ...