Fair enough.

On Jan 13, 2011, at 1:19 PM, Uli Kusterer wrote:

> On Jan 13, 2011, at 1:27 AM, Erik Buck wrote:
>> Class or instance method makes no difference in this case with regard to 
>> polymorphism.
> 
> It does. He's only passing the two instance variables to the class method. 
> And, being a class method, "self" is the class, not the half-initialized 
> instance.
> 
> So what using a class method does, is it makes it possible for subclasses to 
> change the computation by overriding the method (assuming he's using [[self 
> class] compute:...] to call the class method, and doesn't hardcode the class 
> name). However, since it's a class method, subclasses can't accidentally mess 
> with the half-initialized object.
> 
> Cheers,
> -- Uli Kusterer
> "The Witnesses of TeachText are everywhere..."
> 
> 
> 

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