> On Aug 19, 2016, at 1:46 PM, Quincey Morris 
> <quinceymor...@rivergatesoftware.com> wrote:
> 
> My point is that Apple might revisit the implementation of NSArray at any 
> time (in these Swiftian days, stranger things have happened), and choose to 
> write it with full ARC compatibility, which means there might not be any 
> autorelease when invoked from ARC client code, since ARC can optimize the 
> code when it handles both ends of the invocation.

This is true for other classes as well, such as [NSSet set], [NSDictionary 
dictionary], etc.  Interesting that doing something like [NSNumber new] returns 
nil.
-Carl



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