tayebi mohammed
tayebi mohammed

Reputation: 11

declaration a @protocol in objective-c

What means a word "USING" in declaration of @protocol?

The declaration is:

@protocol  name

USING

// declaration of methods

@end

Upvotes: 1

Views: 341

Answers (1)

Georg Schölly
Georg Schölly

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

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