19 lines
250 B
Markdown
19 lines
250 B
Markdown
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# Rect::GetLeft
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```cpp
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float GetLeft() const
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```
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获取矩形左边界。
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**返回：** `float` - 左边界坐标 (x)
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**复杂度：** O(1)
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**示例：**
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```cpp
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Rect rect(10.0f, 20.0f, 100.0f, 50.0f);
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float left = rect.GetLeft(); // 10.0f
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```
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