This protocol declares a single method for classes to implement:
copyWithZone:. Classes should implement this
method to create and return a fully functioning object that is a copy
of the receiver. The zone parameter indicates what memory zone the
new object should be allocated in; if this parameter is
nil, then the instance is allocated in the default
zone. Clients generally make
copies
of objects using NSObject's
copy method, which is a convenience method for
invoking copyWithZone: with nil
as the zone.
@protocol NSCopying
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// Instance Methods |
- (id)copyWithZone:(NSZone *)zone;
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@end
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