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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# String::Find
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```cpp
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SizeType Find(const char* str, SizeType pos = 0) const;
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```
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在字符串中查找子串 `str`,从位置 `pos` 开始搜索。
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**参数:**
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- `str` - 要查找的以 null 结尾的 C 字符串
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- `pos` - 开始搜索的位置,默认为 0
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**返回:** 子串首次出现的起始位置;如果未找到,返回 `String::npos`
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**复杂度:** O(n * m),其中 n 为原字符串长度,m 为要查找的字符串长度
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**示例:**
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```cpp
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#include "XCEngine/Containers/String.h"
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#include <iostream>
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int main() {
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XCEngine::Containers::String s("Hello World, Hello Universe");
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XCEngine::Containers::String::SizeType pos1 = s.Find("World");
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std::cout << "Found at: " << pos1 << std::endl; // 输出: Found at: 6
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XCEngine::Containers::String::SizeType pos2 = s.Find("Hello", 0);
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std::cout << "First 'Hello' at: " << pos2 << std::endl; // 输出: First 'Hello' at: 0
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XCEngine::Containers::String::SizeType pos3 = s.Find("Hello", 7);
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std::cout << "Second 'Hello' at: " << pos3 << std::endl; // 输出: Second 'Hello' at: 13
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XCEngine::Containers::String::SizeType pos4 = s.Find("NotFound");
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if (pos4 == XCEngine::Containers::String::npos) {
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std::cout << "Not found" << std::endl; // 输出: Not found
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}
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return 0;
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}
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```
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## 相关文档
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- [String 总览](string.md) - 返回类总览
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- [StartsWith](starts-with.md) - 检查前缀
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- [EndsWith](ends-with.md) - 检查后缀
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