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