#include <map> // 使用tuple需要包含的头文件 #include <iostream> using namespace std; int main() { tuple<int, char, string>tup0(1, 'A', "hello world"); int e1 = tup0.head();// 1 int e2 = tup0.tail().head(); // 'A' unsigned short cnt = tuple_size(decltype(tup0))::value; // 获取元素个数:3 tuple<char, string> tup1 = tup0.tail(); tuple<double, string> tup2 = make_tuple(1.1, "ABC"); auto d0 = get<0>(tup2);// 1.1 auto d1 = get<1>(tup2);// "ABC" cout <<typeid(d0).name()<< endl;// 获取元素的数据类型:double decltype(d0) d2 = d0;// 逆推d0的数据类型,并使用其声明一个变量d0,然后赋值为d0 return 0; }
原文地址:http://blog.csdn.net/xufeng0991/article/details/42194613