Re: NSDictionary allocation
Re: NSDictionary allocation
- Subject: Re: NSDictionary allocation
- From: Nick Zitzmann <email@hidden>
- Date: Mon, 14 May 2007 19:18:22 -0600
On May 14, 2007, at 5:44 PM, Boyd Collier wrote:
I want to allocate an NSDictionary and initialize its contents with
arguments passed to it, and to do this within the initialization I
make use of an NSMutableDictionary. But I want the dictionary
that's returned from my initialization to be an NSDictionary rather
than the NSMutableDictionary.
What you're trying to do will not work. With only a handful of
exceptions (see NSObject, NSProxy, NSFormatter, and a couple of
others), none of the Foundation classes are made to be subclassable.
The reason is because classes like NSArray, NSDictionary, NSSet,
NSNumber, NSURL, etc. are actually class clusters instead of concrete
classes.
Nick Zitzmann
<http://www.chronosnet.com/>
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