Challenge Chapter 8: sorting with key-path
Challenge Chapter 8: sorting with key-path
- Subject: Challenge Chapter 8: sorting with key-path
- From: "Alexandre Badez" <email@hidden>
- Date: Wed, 23 Jul 2008 08:23:34 +0200
Hy,
I'm actually reading the "cocoa programming for Mac OS X (third edition)".
In chapter 8 we build an application witch display an array of object
with 2 properties (personName, expectedRaise).
We add sorting to the NSTableView using key: personName and selector:
"caseInsensitiveCompare:".
Now, for challenge, I try to sort the same column according to the
lenght of the personName.
I think that I should use the selectore "compare:" of NSNumber, but
what should be my key path for retrieving the lenght of the personName
?
I tried something like personName.@lenght (and @lenght.personName)
personName.lenght but none of them seems to work properly.
--
Alex
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