Hi, I'd like to observer a number of computed @properties in a class. For that would like to use +keyPathsForValuesAffectingValueForKey:
Or alternatively using a number of keyPathsForValuesAffectingMyPropertyName methods. as explained here: https://developer.apple.com/documentation/objectivec/nsobject/1414299-keypathsforvaluesaffectingvaluef Whatever I do, the +keyPathsForValuesAffectingValueForKey or keyPathsForValuesAffectingMyPropertyName methods never seem to get called by my code. In gnustep-base/Source/NSKeyValueObserving.m I see an implementation of +keyPathsForValuesAffectingValueForKey: but don't see, from where that is ever called? I created a simple test tool demonstrating my issue here: https://github.com/buzzdeee/TestObserver As I understand the docs, this should just work "magically" by the KVO implementation, or am I missing something? Any hints appreciated. thanks, Sebastian
