C++ Modules Example

example-module.cxx

// Compile with:
// $ /opt/gcc-latest/bin/g++ --std=c++2b -fmodules-ts  other-module.cxx example-module.cxx -o example

// Global module fragment where #includes can happen
module;
#include <iostream>

// first thing after the Global module fragment must be a module command
export module example;
import other_module;

int main()
{
    OtherClass other;
    other.say_bar();
    std::cout << "Hello, world! " << std::endl;
}

other-module.cxx

// Global module fragment where #includes can happen
module;
#include <iostream>

// first thing after the Global module fragment must be a module command
export module other_module;

export class OtherClass
{
  public:
    void say_bar()
    {
        std::cout << "bar" << std::endl;
    }
};