30 lines
541 B
Markdown
30 lines
541 B
Markdown
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# Vector2::operator-=
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```cpp
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Vector2& operator-=(const Vector2& other)
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```
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向量减法赋值，将 `other` 的分量从当前向量减去。
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**参数：**
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- `other` - 要减的向量
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**返回：** `Vector2&` - 引用到修改后的当前向量
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**线程安全：** ✅
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**复杂度：** O(1)
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**示例：**
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```cpp
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Vector2 v(5.0f, 8.0f);
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v -= Vector2(2.0f, 3.0f); // v = (3.0f, 5.0f)
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```
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## 相关文档
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- [Vector2 总览](vector2.md)
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- [`operator-`](operator-sub.md) - 减法
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- [`operator+=`](operator-add-assign.md) - 加法赋值
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