开发者

Is there any difference between __typeof and typeof?

There are more operators that work when we add __ to the开发者_StackOverflow中文版m too. what does __ mean?


An identifier with double underscores is reserved for the implementation. typeof is a compiler specific extension to the language, so naming it __typeof ensures no user code has an identifier with the same name

0

上一篇:

下一篇:

精彩评论

暂无评论...
验证码 换一张
取 消

最新问答

问答排行榜