@class May I know the proper use of this

Question

Anyone can point out a documentation or a detailed discussion using @class. I\'ve been using this but haven\'t really fully understood it. I want to learn more about it and

Answer 1

@class is used to declare a class. Essentially telling the compiler: "Hey, there is a class with this name somewhere in the source code. The definition will come later, but let me use its name as a pointer type for now."

See also:
developer.apple.com
SO: Class vs Import
MacRumors

Note: As pointed out by Richard J. Ross III, the @class keyword allows for circular references (when two classes both depend on each-other) without breaking the build.