Re: clarification regarding properties



On Fri, Mar 27, 2009 at 11:31 AM, WT <jrcapab@xxxxxxxxx> wrote:
> First, thanks to all who responded to my question.
>
> On Mar 27, 2009, at 6:34 PM, Quincey Morris wrote:
>
>> The 'foo' in 'self.foo' is a property. The 'foo' in 'just foo' is *not* a
>> property, but an instance variable. It's really important to know that the
>> two are entirely different things, even when they are named the same.
>> Whether the property foo even uses an instance variable foo is an
>> implementation detail of your class. A property *may* be implemented using
>> an instance variable for its storage requirements, and the instance variable
>> *may* have the same name as the property, but neither of those things are
>> requirements.
>
> I have trouble understanding the above. How can a property be implemented,
> if not by using an instance variable?

If I implement the methods -foo and -setFoo:, I've just implemented
the property foo.

--
Clark S. Cox III
clarkcox3@xxxxxxxxx
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