C++ 0x:使用函数迭代元组

#include<iostream>
#include<tuple>

template<int INDEX, typename FUNC, typename... ARGS, typename std::enable_if<INDEX == sizeof...(ARGS), int>::type = 0>
void IterateTuple(std::tuple<ARGS...>& t, FUNC f)
{
}

template<int INDEX, typename FUNC, typename... ARGS, typename std::enable_if<INDEX< sizeof...(ARGS), int>::type = 0>
void IterateTuple(std::tuple<ARGS...>& t, FUNC f)
{
    f(std::get<INDEX>(t));
    IterateTuple<INDEX + 1, FUNC, ARGS...>(t, f);
}

template<typename FUNC, typename... ARGS>
void IterateTuple(std::tuple<ARGS...>& t, FUNC f)
{
    IterateTuple<0, FUNC, ARGS...>(t, f);
}

int main()
{
    std::tuple<int, double, std::string> t(1, 2.0, "Hello");

    auto print = [](const auto& v) { std::cout << v << std::endl; };
    IterateTuple(t, print);

    return 0;
}