How do I use concepts in C++20?

In C++20, concepts are a powerful new feature that allow you to specify constraints on template parameters. They help improve code readability and provide better compile-time error messages when templates are instantiated.

By using concepts, you can create more flexible and reusable code while ensuring that template parameters meet specific requirements.

Example of Using Concepts in C++20

// Example of a concept that checks if a type is an integral type template concept Integral = std::is_integral_v; // A function that uses the Integral concept template T add(T a, T b) { return a + b; } // Usage int main() { int result = add(1, 2); // Valid // double dresult = add(1.0, 2.0); // Invalid, will not compile return 0; }

concepts C++20 template programming type constraints compile-time checks

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