What are templates in C++20 and how do I use them?

What are templates in C++20 and how do I use them?

Templates in C++20 allow you to write generic and reusable code. You can create functions and classes that work with any data type.

Can you give me an example of a template function?

Sure! Here's a simple example:

template <typename T>
T add(T a, T b) {
    return a + b;
}

This function can add two values of any type that supports the + operator.

What are the new features related to templates in C++20?

C++20 introduced concepts, which allow you to specify constraints on template parameters, making your templates safer and easier to use.

How do concepts improve template programming?

Concepts improve template programming by allowing you to define requirements for template parameters, leading to clearer error messages and better code readability.