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book: discriminative modification to the nature of override and overload (#265)

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lingkerio whiher
2023-05-07 15:19:09 +08:00
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book/zh-cn/02-usability.md
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@@ -880,7 +880,7 @@ C++11 引入了 `override` 和 `final` 这两个关键字来防止上述情形
#### override
当重载虚函数时，引入 `override` 关键字将显式的告知编译器进行重载，编译器将检查基函数是否存在这样的虚函数，否则将无法通过编译：
当重载虚函数时，引入 `override` 关键字将显式的告知编译器进行重载，编译器将检查基函数是否存在这样的其函数签名一致的虚函数，否则将无法通过编译：
```cpp
struct Base {