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
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docs/api/containers/hashmap/operator-assign.md
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# HashMap::operator=
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```cpp
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HashMap& operator=(const HashMap& other);
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HashMap& operator=(HashMap&& other) noexcept;
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```
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赋值运算符,用另一个 HashMap 的内容替换当前内容。
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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:** 对当前对象的引用 (`*this`)
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**复杂度:**
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- 拷贝赋值:O(m_bucketCount + other.m_size)
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- 移动赋值:O(m_size),需要先清空当前内容
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**示例:**
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```cpp
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XCEngine::Containers::HashMap<int, const char*> map1;
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map1.Insert(1, "one");
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map1.Insert(2, "two");
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XCEngine::Containers::HashMap<int, const char*> map2;
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map2 = map1; // 拷贝赋值
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XCEngine::Containers::HashMap<int, const char*> map3;
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map3 = std::move(map1); // 移动赋值,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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- [Copy/Move](copy-move.md) - 拷贝/移动构造
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