How does constexpr affect performance in C++?

How does constexpr affect performance in C++?

Using constexpr allows for compile-time evaluation, which can lead to faster execution by reducing runtime calculations.

Can you give an example of when to use constexpr?

Sure! You can use constexpr for functions that can be evaluated at compile time, like mathematical calculations or constant expressions.

Are there any downsides to using constexpr?

One downside is that it can increase compile time if overused, as the compiler has to evaluate more expressions at compile time.

How does constexpr compare to regular functions?

Unlike regular functions, constexpr functions can be executed at compile time, which can optimize performance in certain scenarios.