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在Objective-c中,如果两个类采用特定协议,那么这些类的实例可以互换使用?替换采用特定协议的类(Objective-c)
说我有下面的代码:
@protocol MyProtocol
@required
@property (nonatomic, retain) SomeObject *object;
@end
@interface ClassA <MyProtocol>
@property (nonatomic, retain) SomeObject *object;
// ...
@end
@interface ClassB <MyProtocol>
@property (nonatomic, retain) SomeObject *object;
// ...
@end
我可以代替(id <MyProtocol>)instanceOfClassB
当一个方法需要的ClassA
一个实例?