Re: Why the need for the id type?
Re: Why the need for the id type?
- Subject: Re: Why the need for the id type?
- From: "Shawn Erickson" <email@hidden>
- Date: Mon, 18 Jun 2007 14:25:21 -0700
On 6/18/07, Wagner Truppel <email@hidden> wrote:
> On 6/18/07, Wagner Truppel <email@hidden> wrote:
>> Hi everyone,
>>
>> I apologize if this isn't directly related to Cocoa, but I suddenly
>> realized that I don't understand why id should be necessary. Why
>> isn't NSObject (or some other root class) enough?
>
> NSObject is a Cocoa framework concept. Objective-C is not bound to
> Cocoa.
Fair enough. The point remains, though. To me, id is nothing more
than a root class, much like Object in java. Is that true, or is
there something else to it that I'm missing?
> Additionally even within Cocoa not all objects inherit from NSObject
> (some just conform to the NSObject protocol).
True. Again, they're id, so it's as if they inherit from a master
root class.
I apologize for belaboring the point. It's just that I still don't
see a difference between id and a root class.
id isn't a class it is a type that means any class. I am not sure what
more can be said about it...
-Shawn
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