遍歷輸出tuple元素的簡潔方式(C++11)

//遍歷輸出tuple元素的簡潔方式(C++11)
//Win32Con17_VS2017_01.cpp
#include <iostream>
#include <tuple>
using namespace std;

template<typename... Args>
void myprint_impl(tuple<Args...> tup)        //泛化版本
{
    //cout << get<0>(tup) << ((tuple_size<decltype(tup)>::value > 1) ? ", " : "");
    //cout << tup._Myfirst._Val << ((tuple_size<decltype(tup)>::value > 1) ? ", " : "");
    cout << tup._Myfirst._Val << ((tup._Mysize > 1) ? ", " : "");    //輸出tup的頭1項
    myprint_impl(tup._Get_rest());                                    //對除頭1項之外的tup遞歸調用
}

template<>
void myprint_impl(tuple<> tup)                //終止條件
{
    cout << endl;
}

int main()
{
    auto t = make_tuple(3, 4.67, "Hello", true);
    myprint_impl(t);        //3, 4.67, Hello, 1

    system("pause");
    return 0;
}