それらの技術的な違いは何ですか? Apple が推奨する方法はどれですか?
// 1
@interface CocoaQuizViewController : UIViewController
{
IBOutlet UILabel *myLabel;
}
@end
// 2
@interface CocoaQuizViewController : UIViewController
{
IBOutlet UILabel *myLabel;
}
@property (nonatomic, retain) IBOutlet UILabel *myLabel;
@end
// 3
@interface CocoaQuizViewController : UIViewController
{
UILabel *myLabel;
}
@property (nonatomic, retain) IBOutlet UILabel *myLabel;
@end
// 4
@interface CocoaQuizViewController : UIViewController
@property (nonatomic, retain) IBOutlet UILabel *myLabel;
@end