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XCSDD/docs/api/containers/hashmap/operator-assign.md
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# HashMap::operator=
```cpp
HashMap& operator=(const HashMap& other);
HashMap& operator=(HashMap&& other) noexcept;
```
赋值运算符,用另一个 HashMap 的内容替换当前内容。
**参数:**
- `other` - 源哈希表(拷贝版本为 `const` 引用,移动版本为右值引用)
**返回:** 对当前对象的引用 (`*this`)
**复杂度:**
- 拷贝赋值O(m_bucketCount + other.m_size)
- 移动赋值O(m_size),需要先清空当前内容
**示例:**
```cpp
XCEngine::Containers::HashMap<int, const char*> map1;
map1.Insert(1, "one");
map1.Insert(2, "two");
XCEngine::Containers::HashMap<int, const char*> map2;
map2 = map1; // 拷贝赋值
XCEngine::Containers::HashMap<int, const char*> map3;
map3 = std::move(map1); // 移动赋值map1 在此调用后状态不确定
```
## 相关文档
- [HashMap 总览](hashmap.md) - 返回类总览
- [Copy/Move](copy-move.md) - 拷贝/移动构造