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XCEngine/docs/api/containers/hashmap/operator-assign.md
ssdfasd dc850d7739 docs: 重构 API 文档结构并修正源码准确性
- 重组文档目录结构: 每个模块的概述页移动到模块子目录
- 重命名 index.md 为 main.md
- 修正所有模块文档中的错误:
  - math: FromEuler→FromEulerAngles, TransformDirection 包含缩放, Box 是 OBB, Color::ToRGBA 格式
  - containers: 新增 operator==/!= 文档, 补充 std::hash DJB 算法细节
  - core: 修复 types 链接错误
  - debug: LogLevelToString 返回大写, timestamp 是秒, Profiler 空实现标注, Windows API vs ANSI
  - memory: 修复头文件路径, malloc vs operator new, 新增方法文档
  - resources: 修复 Shader/Texture 链接错误
  - threading: TaskSystem::Wait 空实现标注, ReadWriteLock 重入描述, LambdaTask 链接
- 验证: fix_links.py 确认 0 个断裂引用
2026-03-19 00:22:30 +08:00

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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