This is strange (to me) .. I’m extending the NSMutableArray class, which in a simple example only overrides the count method. But I’m getting the following runtime exception:

*** -count only defined for abstract class. Define -[IndexableMutableArray count]! IndexableMutableArray.h: @interface IndexableMutableArray : NSMutableArray { } @end IndexableMutableArray.m: @implementation IndexableMutableArray - (unsigned)count { NSLog(@"IndexableMutableArray:count"); return [super count]; } @end What's wrong here?? Anyone? :) ---- See ClassClusters for the question and TextFormattingRules for how to make your code not look terrible. ---- Excellent. Sorry for noobing out. Thanks for the tips.