What are some examples of using enable_if in C++?

Can you explain what enable_if is in C++?

Sure! enable_if is a template metaprogramming utility that allows you to conditionally enable or disable function templates based on certain conditions.

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

Absolutely! Here's a simple example: you can use enable_if to create a function that only accepts integral types.

How does that work in code?

Here's a code snippet:

#include <type_traits>

template<typename T>
typename std::enable_if<std::is_integral<T>::value>::type myFunction(T value) {
    // Function implementation for integral types
}

What happens if I try to pass a non-integral type?

If you try to pass a non-integral type, the function will not be instantiated, and you'll get a compilation error.