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