> On Feb 25, 2016, at 8:35 AM, Dave <d...@looktowindward.com> wrote:
> 
>>> Also, beware subclassing a Non-ARC Class in an ARC Project - you have to 
>>> have the subclass Non-ARC too.
>> 
>> This is not true. For example, NSView is not ARC but you can write ARC 
>> subclasses of it.
> 
> I didn’t say it was impossible, but depending on what the class does and how 
> it’s implemented can cause problems……..

You did say “you have to have the subclass Non-ARC”, which to me sounds like 
“it’s impossible”.

And I can’t think of any way that a (properly implemented) non-ARC class could 
cause problems for an ARC subclass. A class’s or method’s behavior doesn’t 
change depending on whether its implementation uses ARC. Do you have any actual 
examples of problems?

—Jens
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