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co-definition of classes
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co-definition of classes


  • Subject: co-definition of classes
  • From: Roland Silver <email@hidden>
  • Date: Fri, 28 Sep 2007 21:34:26 -0600

The C compiler is happy with the following co-definition of two struct types;

typedef struct Foo {
	struct Bar* bar;
} Foo;

typedef struct Bar {
	struct Foo* foo;
} Bar;

Is there some way to co-define two classes which reference each other?
The compiler barfs (error: parse error before 'Bar') at the following:

#import <Cocoa/Cocoa.h>

@interface Foo : NSObject {
 	Bar* bar;
}
@end

@interface Bar : NSObject {
 	Foo* foo;
}
@end

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