On Feb 21, 2009, at 17:36, Quincey Morris wrote:

Nothing wrong, just failing to use @class for its intended purpose. :)

#import <Cocoa/Cocoa.h>
@class ControllerB;

@interface ControllerA : NSObject {
        ControllerB *myController;
        NSArray *fruit;
}

@property (readonly, getter=fruit) NSArray *fruit;
@property (retain) ControllerB *myController;

- (NSArray *)fruit;

@end

#import <Foundation/Foundation.h>
@class ControllerA;

@interface ControllerB : NSObject {
        ControllerA *delegate;
}

@property (retain) ControllerA *delegate;

- (void)doSomethingSpecialWithFruit;

@end

Note that you don't need to include either .h file in the other .h file, although you could if you had some other reason to, once you'd used @class to handle the forward-referencing problem caused by mutual class references.

Sorry, I didn't read down into all the nested quotes. You already got this far. This missing piece is that you have to explicitly #import *both* .h files into *both* .m files. Alternatively, each .h file could #import the other, but would still need the appropriate @class statement to declare the class before it's referred to.


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