iOS遵循NSCopying协议采用的copy 和自己写的myCopy函数有什么区别？

@interface MyObject : NSObject <NSCopying> Then override the copyWithZone method like, - (id)copyWithZone:(NSZone *)zone { id copy = [[[self class]...

(void)encodeBycopyObject:(id)anObject; - (void)encodeByrefObject:(id)an...NSDataWritingFileProtectionNone NS_ENUM_AVAILABLE_IOS(4_0) = 0x10000000, ...

The problem is to copy properly between them. I...ios copywithzone nsmutablecopying share|improve this...If a subclass inherits NSCopying from its supercla...

I want to create a copy of cell object.. Following is my code but retrieving...Also it should conform to NSCopying protocol. Think of how you'd like...

handle copy efficiently (see next section regarding immutability and NSCopying...the object at the point in time when I am assigning it to my property?...