> Thus Complex is somewhat similar to a Number but it is not a subclass of
> it. Some operations
> we would like to inherit (e.g. #abs, #negated, #reciprocal) but some of
> the Number operation
> do not have sens to inherit or to overload. Classes are not always neat
> mechanism.
> 
> !!!!!! We had to COPY the implementation of the
> 		abs
> 		negated
> 		reciprocal
> 		log:
> 		isZero
> 		reciprocal
> 		...
> 	methods from the Number class to the Complex class. Awful solution. Now
> I begin to
> 	appreciate the Self.
> 


... looks like a job for Traits :)


Stef