Reputation: 11
What means a word "USING" in declaration of @protocol
?
The declaration is:
@protocol name
USING
// declaration of methods
@end
Upvotes: 1
Views: 341
Reputation: 126095
There's no using
keyword in Objective-C.
Two possibilities:
It's somewhere defined as a macro, in that case you have to look it up in your code. (Xcode helps you with this if you click on it using a right-click.)
The file is actually Objective-C++. The using
keyword comes from C++, but I don't think there's a special functionality in the context of @protocol
.
Given the fact that it's written in capitals, I'd say it's a macro.
Upvotes: 1