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XCEngine/docs/api/containers/array/clear.md

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# Array::Clear()
```cpp
void Clear();
```
清空数组中的所有元素。
**行为:**
- 调用所有元素的析构函数
-`Size()` 设为 0
- **不释放底层内存**`Capacity()` 保持不变
**线程安全:** ❌ 清空期间不可并发访问
**示例:**
```cpp
XCEngine::Containers::Array<int> arr = {1, 2, 3, 4, 5};
arr.Size(); // 5
arr.Capacity(); // 8假设自动扩容到 8
arr.Clear();
arr.Size(); // 0
arr.Capacity(); // 8内存未被释放
// 可继续添加元素,不会重新分配内存
arr.PushBack(10);
arr.PushBack(20);
```
## 相关文档
- [Array 总览](array.md) - 返回类总览