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Dockyard > Objective-C Classes > NSString Additions
Class Description
NSString now supports KVO! Using the key @"string" will work for both mutable and immutable strings, thanks to this simple category. Works with Cocoa Bindings too!
Methods
Accessing the string
Overriden KVO methods
- addObserver:forKeyPath:options:context:
Method Detail
addObserver:forKeyPath:options:context:
- (void)addObserver:(NSObject *)observer forKeyPath:(NSString *)keyPath options:(NSKeyValueObservingOptions)options context:(void *)context
The normal KVO methods change the class of the observed object as soon as an observer is added. Because NSString is toll-free bridged with CFString, this causes serious problems on pre-10.4 systems (I don't really know why). This makes sure that any string's class will stay the same even after an observer has been added.
This page was generated with DocYouMeant, a program created by Belkadan Software