Re: case-insensitive NSDictionary
Re: case-insensitive NSDictionary
- Subject: Re: case-insensitive NSDictionary
- From: Michael Ash <email@hidden>
- Date: Mon, 16 Mar 2009 14:27:27 -0400
On Mon, Mar 16, 2009 at 2:20 PM, Stuart Malin <email@hidden> wrote:
>
> On Mar 16, 2009, at 7:55 AM, Sherm Pendley <email@hidden> wrote:
>
> On Mon, Mar 16, 2009 at 12:03 PM, Michael Ash <email@hidden> wrote:
>
>
> Why does everybody think that subclassing a class cluster is hard?
>
>
> Beats me - I've often wondered the same thing. All you need to do is
> implement the required primitive methods. What's so hard about that?
>
> Question from a non-expert:
> How does one know just which methods are "required primitive" methods for
> some class? Is that discernible from documentation? Header file?
Why not go look at the docs and see?
Open the NSDictionary docs, cmd-F, "primitive", return, and you'll see
a section called "Primitive Methods". This is true of every class that
Apple documents as being a class cluster.
(Some classes, like NSTask, are class clusters but Apple never tells
us that. For those, you get to find out when you subclass them and
your subclass explodes. Fun times.)
Mike
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