Re: Sorting an NSArray
Re: Sorting an NSArray
- Subject: Re: Sorting an NSArray
- From: Andy Lee <email@hidden>
- Date: Thu, 30 Jun 2005 02:04:10 -0700
On Jun 30, 2005, at 1:53 AM, j o a r wrote:
On 30 jun 2005, at 10.46, Andy Lee wrote:
Oops, that isn't right. The selector you pass is supposed to be a
comparison method, which is not what -name is. What you should do
is write a comparison method in your object class, and pass the
selector for that method.
Stop to think if you really need to write a custom comparison
method - it's probably only necessary if you need to compare non-
object values or perform a compound comparison between several
attributes. The question asked in the first message in this thread
didn't give that impression.
Hm, taking a hint, I've discovered NSSortDescriptor, which I can now
use myself since I'm no longer supporting Jaguar in my app. (I'll
have to check whether it buys me anything.)
I won't try to explain NSSortDescriptor at this hour, for fear of
embarrassing myself -- I'll just repeat the advice to see the docs
and post again if they're not clear.
Thanks.
--Andy
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