get part of std::tuple

Question

I have a tuple of unknown size (it\'s template parametr of method)

Is it way to get part of it (I need throw away first element of it)

For example, I have

Answer 1

With C++17, you can use std::apply:

template 
std::tuple tuple_tail(const std::tuple& t)
{
    return apply([](auto head, auto... tail) {
        return std::make_tuple(tail...)};
    }, t);
}