title: why is @class used in objective-c
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/3653316/class-may-i-know-the-proper-use-of-this">@class May I know the proper use of this</a>  </p>
  </blockquote>
  
  
  
  <p>I am wondering why @class is used. I have a general understanding  that it allows you to access things in that class you call, however I don't know the benefit of it.. </p>