What is compile-time evaluation in C++?

What is compile-time evaluation in C++?

Compile-time evaluation in C++ refers to computations that are performed during the compilation process rather than at runtime.

Can you give me an example of compile-time evaluation?

Sure! Using constexpr functions allows you to compute values at compile time. For instance, constexpr int square(int x) { return x * x; }.

What are the benefits of using compile-time evaluation?

The benefits include improved performance, as it reduces runtime overhead, and the ability to catch errors during compilation.

Are there any limitations to compile-time evaluation?

Yes, limitations include the inability to use dynamic memory allocation and certain runtime features, as everything must be known at compile time.