Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.Aprende Comparing Modules vs Headers | Modules
C++ Namespaces and Modules

bookComparing Modules vs Headers

Modules, introduced in C++20, solve these issues by providing a clear separation between interface and implementation, avoiding the need for textual inclusion. Modules are compiled once and imported, so changes in a module's implementation do not force recompilation of all importers unless the interface changes. This leads to faster builds, better encapsulation, and improved code hygiene. However, migrating to modules may require build system updates and is only supported in newer compilers.

main.cpp

main.cpp

math.ixx

math.ixx

copy

              
12345678

            
import math;
#include <iostream>

int main()
{
    int result = add(2, 3);
    std::cout << "2 + 3 = " << result << std::endl;
}

The differences between modules and headers are significant in both design and practical workflow. Traditional headers (.h files) require careful management of include guards to prevent multiple definition errors; changes in headers can trigger recompilation of all dependent files, increasing build times.

main.cpp

main.cpp

math.h

math.h

math.cpp

math.cpp

copy

              
12345678

            
#include <iostream>
#include "math.h"

int main()
{
    int result = add(2, 3);
    std::cout << "2 + 3 = " << result << std::endl;
}
question mark

Which of the following is a key benefit of using modules over traditional headers in C++?

Select the correct answer

¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 3. Capítulo 3

Pregunte a AI

expand

Pregunte a AI

ChatGPT

Pregunte lo que quiera o pruebe una de las preguntas sugeridas para comenzar nuestra charla

Suggested prompts:

Can you explain how to migrate an existing project from headers to modules?

What are the main challenges when using modules in large codebases?

Are there any compatibility issues with older compilers when using modules?

Awesome!

Completion rate improved to 12.5

bookComparing Modules vs Headers

Desliza para mostrar el menú

Modules, introduced in C++20, solve these issues by providing a clear separation between interface and implementation, avoiding the need for textual inclusion. Modules are compiled once and imported, so changes in a module's implementation do not force recompilation of all importers unless the interface changes. This leads to faster builds, better encapsulation, and improved code hygiene. However, migrating to modules may require build system updates and is only supported in newer compilers.

main.cpp

main.cpp

math.ixx

math.ixx

copy

              
12345678

            
import math;
#include <iostream>

int main()
{
    int result = add(2, 3);
    std::cout << "2 + 3 = " << result << std::endl;
}

The differences between modules and headers are significant in both design and practical workflow. Traditional headers (.h files) require careful management of include guards to prevent multiple definition errors; changes in headers can trigger recompilation of all dependent files, increasing build times.

main.cpp

main.cpp

math.h

math.h

math.cpp

math.cpp

copy

              
12345678

            
#include <iostream>
#include "math.h"

int main()
{
    int result = add(2, 3);
    std::cout << "2 + 3 = " << result << std::endl;
}
question mark

Which of the following is a key benefit of using modules over traditional headers in C++?

Select the correct answer

¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 3. Capítulo 3
some-alt