Re: Challenge Chapter 8: sorting with key-path
Re: Challenge Chapter 8: sorting with key-path
- Subject: Re: Challenge Chapter 8: sorting with key-path
- From: "Alexandre Badez" <email@hidden>
- Date: Wed, 23 Jul 2008 09:05:10 +0200
I understand how to call a method and I've make my app work as I
wanted with method and code etc.
The problem, is that the challenge's main objective is to do it only
in interface builder, and this is where I'm stuck.
I should retrieve the lenght of personName (witch is as you guess a
NSString) and compare it to other person's name.
> Hi, I don't have the book in front of me but if personName is a NSString.
> Then, you can do the following:
> int stringLength = [ personName length ];
> Good luck,
> -Conrad
>
> On Tue, Jul 22, 2008 at 11:23 PM, Alexandre Badez
>>
>> 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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