Module Units

A module unit is a source file meant to contain a module declaration. Different types of module units in C++20 modules are:

• Module interface unit: This unit exports a module name where the module declaration contains the export keyword.
• Module implementation unit: This unit is a separate file that is used to implement the modules.
• Module partition: It is a module where module-partition component is present.

In C++20, the concept of modules was introduced to improve the efficiency of the compilation process and provide better organization and encapsulation of code. Modules allow developers to divide their code into separate components, each with its own interface and implementation, and import them as needed. This article will explain the concept of modules in C++20, provide examples, and demonstrate the approach to working with modules.