Re: understanding conversions between CF and NS datatypes
Re: understanding conversions between CF and NS datatypes
- Subject: Re: understanding conversions between CF and NS datatypes
- From: "Michael Ash" <email@hidden>
- Date: Thu, 4 Sep 2008 12:27:53 -0400
On Thu, Sep 4, 2008 at 10:41 AM, Negm-Awad Amin <email@hidden> wrote:
>
> Am Sa,30.08.2008 um 05:22 schrieb Michael Ash:
>
>> Ultimately the most important thing to understand about toll-free
>> bridging (the link between CF and NS data types) is that you don't
>> have to convert anything. You *can't* convert anything. Because they
>> aren't two different things. An NSArray *is* a CFArray. An
>> NSMutableArray is a CFMutableArray. They are just two different names
>> for the same type.
>
> I'm not sure, whether this is completly correct. I would prefer to say, that
> are two different names of two different types, which are interchangeable.
No, they are the same type.
> But AFAIK in some (rare) cases, CF and NS behaves differently.
Meaningless. You can subclass NSArray and get whatever behavior you
want. The result is still an NSArray (and still a CFArray).
Mike
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