静态关键字在命名空间范围内无用？ [英] static keyword useless in namespace scope?

问题描述

namespace N
{
   static int x = 5;
}

可以是声明具有静态变量的重要性/用例命名空间范围？

What could be the importance/use-cases of declaring having a static variable at namespace scope?

推荐答案

附件D（兼容性功能）[C ++ 03]

Annex D (Compatibility features) [C++03]

D2：当在命名空间范围中声明对象时，static关键字的使用已过时。

D2: The use of the static keyword is deprecated when declaring objects in namespace scope.

使用未命名的命名空间，而不是此帖子中所述。

Use unnamed namespaces instead as mentioned in this post.

static关键字赋予C中的变量/对象以及C ++在命名空间范围内的内部链接，正如其他人在其帖子中提到的那样。

static keyword imparts internal linkage to variables/objects in C as well as in C++ in namespace scope as others have mentioned in their posts.

PS：
此功能已根据最新草稿（n3290）未淘汰。在n3225 §7.3.1.1/ 2 已存在但已删除。

P.S: Thie feature has been undeprecated as per the latest draft (n3290). In n3225 §7.3.1.1/2 is present but striked out.

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