Maybe I miss something, but it seems, the standard KVO does not work
for properties whose values are non-objects, say int, float etc.
How can I effortless accomplish to observe at such properties?
For instance:
@interface Model {
int value;
}
@property int value;
@end
@interface Observer {
}
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDictionary *)change context:(void
*)context;
@end
// Register an observer:
Model model* = [[Model alloc] init];
Observer* observer = [[Observer alloc] init];
[model addObserver:observer forKeyPath:@"value" options:0 context:NULL];
And, btw., how can Model determine whether an observer is added to one
of its properties?
Thanks in advance
Regards
Andreas
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