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changkun merged 1 commit into from
Oct 17, 2018
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Update 02-usability.md #44

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2 changes: 1 addition & 1 deletion book/zh-cn/02-usability.md
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Expand Up @@ -890,7 +890,7 @@ class Magic {

### 强类型枚举

在传统 C++中，枚举类型并非类型安全，枚举类型会被视作整数，则会让两种完全不同的枚举类型可以进行直接的比较（虽然编译器给出了检查，但并非所有），**甚至枚举类型的枚举值名字不能相同**，这不是我们希望看到的结果。
在传统 C++中，枚举类型并非类型安全，枚举类型会被视作整数，则会让两种完全不同的枚举类型可以进行直接的比较（虽然编译器给出了检查，但并非所有），**甚至同一个命名空间中的不同枚举类型的枚举值名字不能相同**，这通常不是我们希望看到的结果。

C++11 引入了枚举类（enumaration class），并使用 `enum class` 的语法进行声明：

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