Re: NSMutable setArray Behavior
Re: NSMutable setArray Behavior
- Subject: Re: NSMutable setArray Behavior
- From: Kyle Sluder <email@hidden>
- Date: Tue, 20 Apr 2010 14:48:31 -0700
On Tue, Apr 20, 2010 at 2:07 PM, Jens Alfke <email@hidden> wrote:
> In general I can't think of any deep-copy behavior in any of the Cocoa
> collection classes. With one exception*, objects only get copied when you
> explicitly call -copy. And even -copy is implemented shallowly in existing
> classes (so copying an NSArray results in a new array that contains the same
> objects, not copies of those objects.)
On Tiger and earlier, custom subclasses of the collection classes
would deep-copy. See the Leopard release notes:
http://developer.apple.com/iphone/library/releasenotes/Cocoa/Foundation.html
--Kyle Sluder
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