Folks;
Annoyed that something was amiss I have respecified the various bits
of code and it all now works as I knew Cocoa would..
Best explanation I can offer is some spelling error in key handling of
which I was blinded..
Sorry for the nuisance on the list! [:-(
Steve
This code works:
NSMutableDictionary *address = [NSMutableDictionary
dictionaryWithCapacity:7];
[address setObject:@"BoomTown" forKey:@"city"];
//more values set here..
NSMutableDictionary *myPerson = [NSMutableDictionary
dictionaryWithObjectsAndKeys:
@"Bob",
@"name",
address,
@"homeAddress",
nil];
NSLog(@"keyPath = %@", [myPerson
valueForKeyPath:@"homeAddress.city"]); //BoomTown
NSLog(@"keys = %@", [[myPerson valueForKey:@"homeAddress"]
valueForKey:@"city"]); //BoomTown
On Apr 30, 2009, at 7:29 PM, Ulai Beekam wrote:
Because just adding a key to a dictionary does not make it key-value-
coding compliant with respect to that key. KVC is needed for key
paths like that to work.
----------------------------------------
From: steve_cro...@mac.com
To: cocoa-dev@lists.apple.com
Date: Thu, 30 Apr 2009 19:00:51 -0500
Subject: valueForKeyPath
Folks;
I have a mutable dictionary 'myPerson' which has a key=@"address".
The object stored at @"address" is another mutable dictionary.
someCity = [myPerson valueForKeyPath:@"address.city"] --> nil
someCity = [[myPerson valueForKey:@"address"] valueForKey:@"city"] --
expected value
Why does -valueForKeyPath not work in this circumstance?
Steve
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