• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Array Key-value Paths
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Array Key-value Paths

  • Subject: Re: Array Key-value Paths
  • From: Allan Odgaard <email@hidden>
  • Date: Wed, 26 May 2004 15:54:15 +0200
On 26. May 2004, at 5:50, Sheehan Olver wrote:

[...] what happens when you call:
[self setValue:descriptionArray
forKeyPath:@"array.description"]
It can't call "setDescription:" on anything because "array" is not populated. I couldn't find a detailed description of key-value paths in the documentation, unless I just looked in the wrong place.

From NSArray documentation:
- (void)setValue:(id)value forKey:(NSString *)key
Invokes setValue:forKey: on each of the receiver's
items using the specified value and key.

But I am not sure what you refer to above. Is 'array' a key in each item in descriptionArray? And by "not populated" you mean empty?

Or doesn't it exist? Cause then you'll get a run-time exception.
_______________________________________________
cocoa-dev mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/cocoa-dev
Do not post admin requests to the list. They will be ignored.

  • Follow-Ups:
    • Re: Array Key-value Paths
      • From: Sheehan Olver <email@hidden>
References: 
 >Array Key-value Paths (From: Sheehan Olver <email@hidden>)

  • Prev by Date: Re: monitoring retainCount
  • Next by Date: Re: NSComboBox and bindings
  • Previous by thread: Re: Array Key-value Paths
  • Next by thread: Re: Array Key-value Paths
  • Index(es):
    • Date
    • Thread