How do I mix modules with headers and precompiled headers?

Mixing modules with headers and precompiled headers in C++ can optimize compile times while maintaining the modularity of your code. This approach allows you to take advantage of the benefits of modules, such as better encapsulation and increased compile-time efficiency, while still relying on traditional header files for compatibility and legacy code integration.

Here's a simple example demonstrating how to combine modules and headers in C++:

// mymodule.ixx export module mymodule; export void hello() { std::cout << "Hello from the module!" << std::endl; } // main.cpp import mymodule; int main() { hello(); return 0; }

In this example, we define a simple module `mymodule` that exports a function `hello`. The `main.cpp` file imports this module and calls the `hello` function. Using precompiled headers for common includes can further enhance compile times.


C++ modules precompiled headers headers optimization compile time

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