What are constexpr limits in C++?

What are constexpr limits in C++?

In C++, constexpr limits refer to the constraints on the values that can be evaluated at compile time using the constexpr keyword.

Can you give me an example of how to use constexpr?

Sure! Here's a simple example: you can define a constexpr function that calculates the factorial of a number at compile time.

Are there any limitations on the types that can be used with constexpr?

Yes, only certain types like integral types, floating-point types, and some user-defined types can be used with constexpr.

How does constexpr improve performance?

Using constexpr allows computations to be done at compile time, reducing runtime overhead and improving performance.