Re: Another CFTypeRef question

2016-01-14 Thread Kyle Sluder 
On Thu, Jan 14, 2016, at 08:54 AM, Clark Cox wrote:
> No. It does not change. A CF object has a single address for its
> lifetime.
> 
> > On Jan 14, 2016, at 06:42, Dave  wrote:
> > 
> > Hi,
> > 
> > Does the pointer value of a CFTypeRef change during it’s lifetime? Can I 
> > safely uses the string value of the pointer %p as a key to a dictionary?

That said, this is a very strange question. It sounds like you're trying
to implement a hash table by working around the requirement that an
NSDictionary key's must be copiable. Are you sure NSMapTable is not
better for your needs?

--Kyle Sluder

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Re: Another CFTypeRef question

2016-01-14 Thread Clark Cox 
No. It does not change. A CF object has a single address for its lifetime.

> On Jan 14, 2016, at 06:42, Dave  wrote:
> 
> Hi,
> 
> Does the pointer value of a CFTypeRef change during it’s lifetime? Can I 
> safely uses the string value of the pointer %p as a key to a dictionary?
> 
> All the Best
> Dave
> 
> 
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