Syntax error with typename and scope operator

Can someone tell me how to fix the syntax problem below?

#include <iostream>

template <int N>
struct Thing { 
    static const int num = N;
};

template <int N>
struct Get {
    using type = Thing<N>;
};

template <int... Is>
void foo() {
//  int a[] = {(std::cout << Thing<Is>::num << '\n', 0)...};  // This compiles.
    int a[] = {(std::cout << typename Get<Is>::type::num << '\n', 0)...};  // This does not.
}

int main() {
    foo<0,1,2>();
}

GCC 5.1.0 says [Error] expected '(' before '<<' token. Any quick way to fix this (without writing a new function and have it called within foo)?