Is there a way to get the values in a parameter pack without using recursion?

Question

I've seen many example codes that use recursion to extract the values from a parameter pack. Is there any way, other than recursion, to extract the values from a parameter pack?

Answer 1

Depending on what you want to do, you can use C++17 fold expressions:

template <int ... ints>
constexpr int product() {
    return (ints * ...);
}