How can I pull variadic template arguments off from the tail instead of the head?

Question

For silly reasons I\'ll not go into here, I need the commented out line to work and the line above it it to not work:

template
         


        

Answer 1

I've been playing with it all night and finally got something to work (changed my casing to match the STL):

template
struct reverse_tuple_outer
{
    template
    struct reverse_tuple_inner: reverse_tuple_outer<_N-1, _Head, _All...>::template reverse_tuple_inner<_Tail...> { };
};

template
struct reverse_tuple_outer<0, _All...>
{
    template
    struct reverse_tuple_inner {
        typedef std::tuple<_All...> type;
    };
};

template
struct reverse_tuple
{
    typedef typename reverse_tuple_outer::template reverse_tuple_inner<_Args...>::type type;
};

template
struct strip_and_reverse_tuple;

template
struct strip_and_reverse_tuple>
{
    typedef typename reverse_tuple<_Args...>::type type;
};

template
struct partial_tuple
{
    typedef typename strip_and_reverse_tuple::template reverse_tuple_inner<_Args...>::type>::type type;
};

int main()
{
    //partial_tuple<1, std::string, std::string, int, int>::type A{"test", 5, 1};
    partial_tuple<1, std::string, std::string, int, int>::type B{"test", "test", 5};
}

As an added bonus, I also have reverse_tuple, should I ever need it.