浅拷贝，深拷贝－－－ios

#import <Foundation/Foundation.h>

@interface Father : NSObject <NSCopying,NSMutableCopying>
@property (nonatomic,copy) NSString *name;
@property (nonatomic,retain) NSNumber *age;
-(id) initWithName:(NSString *)name withAge:(NSNumber *) age;
@end
#import <Foundation/Foundation.h>

@interfa