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tuple.cpp
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27 lines (24 loc) · 730 Bytes
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//
// Created by light on 19-11-4.
//
#include <iostream>
#include <tuple>
using namespace std;
// tuple使用
int main() {
tuple<int, int, string> t, t1, t2;
t = make_tuple(1, 2, "qwe");
t1 = make_tuple(3, 2, "qwe");
t2 = make_tuple(3, 2, "qwe");
int a = get<0>(t);
get<0>(t) = get<1>(t); // 可以修改
cout << a << endl;
cout << (get<0>(t) > get<1>(t) ? "true" : "false") << endl; // 比较大小
cout << (t1 == t2 ? "true" : "false") << endl;
typedef tuple<int, int, int, string> T;
cout << tuple_size<T>::value << endl; // meta programming 处理类型
cout << tuple_size<T>::value << endl;
tuple_element<1, T>::type a1 = 10;
cout << a1 << endl;
return 0;
}