51 lines
936 B
C++
51 lines
936 B
C++
#include "ACMOJ-2095.hpp"
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#include <iostream>
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struct koishi {
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int id;
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koishi() = default;
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koishi(int id) : id(id) {}
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};
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std::ostream &operator<<(std::ostream &os, const koishi &k) {
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return os << "Komeiji Koishi " << k.id;
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}
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void test0() {
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using sjtu::unique_ptr;
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unique_ptr<int> ptr1(new int(114514));
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// 移交所有权
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unique_ptr<int> ptr2(std::move(ptr1));
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// 释放所有权
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int *tmp = ptr2.release();
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delete tmp;
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}
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void test1() {
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using sjtu::unique_ptr;
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unique_ptr<koishi> ptr1 = sjtu::make_unique<koishi>(koishi(1));
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// 这个行为可能是未定义的，但是我们要求其应该可以正常工作
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ptr1 = std::move(ptr1);
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// 成员访问
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ptr1->id = 514;
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// 解引用
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std::cout << *ptr1 << std::endl;
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// 重置，现在 ptr1 应该为空
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ptr1.reset();
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if (!ptr1.get()) {
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std::cout << "ptr1 is empty!" << '\n';
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}
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}
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signed main() {
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test0();
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test1();
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return 0;
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} |