gistfile1.cpp

#include <iostream>
#include <tuple>
#include <utility>

using namespace std;

template <typename F, typename T, size_t... I>
auto apply_(F f, T&& t, integer_sequence<size_t, I...>) {
    return f(get<I>(t)...);
}

template <typename F, typename... Args>
auto apply(F f, tuple<Args...>&& t) {
    return apply_(f, t, make_integer_sequence<size_t, sizeof...(Args)>());
}

int main() {
    apply([](auto x, auto y, auto z) {
        cout << x << ", " << y << ", " << z << endl;
    }, make_tuple(10, "Hello", 42.5));
}