@class vs. #import

Question

It is to my understanding that one should use a forward-class declaration in the event ClassA needs to include a ClassB header, and ClassB needs to include a ClassA header t

Answer 1

This is an example scenario, where we need @class.

Consider if you wish to create a protocol within header file, which has a parameter with data type of the same class, then you can use @class. Please do remember that you can also declare protocols separately, this is just an example.

// DroneSearchField.h

#import 
@class DroneSearchField;
@protocol DroneSearchFieldDelegate
@optional
- (void)DroneTextFieldButtonClicked:(DroneSearchField *)textField;
@end
@interface DroneSearchField : UITextField
@end