C ++：什么是“静态枚举”意思 [英] C++: what does "static enum" mean

问题描述

我最近遇到了这个问题：

I recently came across this:

static enum Response{
    NO_ERROR=0,
    MISSING_DESCRIPTOR,
    ...
};

它在MSVS2005下编译和工作。但是，我不知道静态修改器应该做什么。它与以下内容有什么不同？

It compiles and works under MSVS2005. However, I'm not sure what the 'static' modifier is supposed to do. Is it any different from the following?

enum Response {
    NO_ERROR=0,
    MISSING_DESCRIPTOR,
    ...
};

推荐答案

精确的代码，无效的C ++。您不能在枚举声明中使用 static 存储类说明符;它不会有任何意义（只有对象，函数和匿名联合可以声明 static ）。

That exact code, with just the ellipsis removed, is not valid C++. You can't use the static storage class specifier in an enum declaration; it doesn't make any sense there (only objects, functions, and anonymous unions can be declared static).

但是，您可以在一个声明中声明枚举和变量all：

You can, however, declare an enum and a variable all in one declaration:

static enum Response {
    NO_ERROR = 0,
    MISSING_DESCRIPTOR
} x; 

static 此处适用于 x ，它和你说的是一样的：

The static here applies to x and it is effectively the same as if you said:

enum Response { 
    NO_ERROR = 0,
    MISSING_DESCRIPTOR
};

static Response x;

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