On Oct 4, 2013, at 9:59 AM, Matt Neuburg <m...@tidbits.com> wrote:
> Surely an id<MyCellDelegate> is, by definition, an id

It is not. There is no id-style type system leniency in `id<SomeProtocol>`. 
That type must conform to the protocol and respond to its methods, and nothing 
more. Unlike `id` it does not allow use of any other methods.

In practice you'll usually want to use NSObject<SomeProtocol>*, in part because 
there are useful methods in class NSObject that are not part of protocol 
NSObject.


-- 
Greg Parker     gpar...@apple.com     Runtime Wrangler



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