什么是“静态枚举"?在C ++中意味着什么? [英] What does "static enum" mean in C++?

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,
    ...
};

它可以在Microsoft VS2005下编译并工作.但是，我不确定静态"修饰符应该做什么.与以下内容有何不同?

It compiles and works under Microsoft VS2005. 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

仅删除省略号的确切代码不是有效的C ++.您不能在enum声明中使用static存储类说明符；在那里没有任何意义(只能将对象，函数和匿名联合声明为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一个enum和一个变量:

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

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

此处的static适用于x，实际上与您说的相同:

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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