35 lines
862 B
Markdown
35 lines
862 B
Markdown
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# HashMap::Copy/Move 构造
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```cpp
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HashMap(const HashMap& other);
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HashMap(HashMap&& other) noexcept;
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```
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拷贝构造和移动构造。
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**参数：**
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- `other` - 源哈希表（拷贝版本为 `const` 引用，移动版本为右值引用）
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**返回：** 无（构造函数）
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**复杂度：**
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- 拷贝构造：O(m_bucketCount + other.m_size)
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- 移动构造：O(1)，直接接管源对象的内部资源
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**示例：**
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```cpp
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XCEngine::Containers::HashMap<int, std::string> map1;
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map1.Insert(1, "hello");
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map1.Insert(2, "world");
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XCEngine::Containers::HashMap<int, std::string> map2(map1); // 拷贝构造
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XCEngine::Containers::HashMap<int, std::string> map3(std::move(map1)); // 移动构造，map1 在此调用后状态不确定
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```
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## 相关文档
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- [HashMap 总览](hashmap.md) - 返回类总览
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- [operator=](operator-assign.md) - 赋值运算符
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