On Feb 28, 2010, at 9:26 AM, Jens Alfke wrote:
On Feb 28, 2010, at 8:23 AM, Chris Tracewell wrote:
I have two synthesized properties - A and B. Whenever A changes I
need B to be updated to A.keypath.
If B's value is entirely dependent upon A, you don't even need to
synthesize it — you can just implement B's getter to return
A.keypath, and declare B as dependent on A:
- (NSString*) b {return A.keypath; }
+ (NSArray*) keyPathsForValuesAffectingB { return [NSArray
arrayWithObject: @"a"]; }
—Jens
Jens -
keyPathsForValuesAffecting looks like what I am looking for.
Thank you
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to arch...@mail-archive.com
