Am 15.11.2005 um 12:20 schrieb Dan Corneanu:

> Hi,
> In a SqueakImage 3.8 running on WinXP the ALT+. does interrupt the  
> loop
> (for me).
> I still have a question: why does Collection>>size iterates over all
> elements and actually counts them?
>     1. Why is this not implemented with a simple instance variable? or

It is, in subclasses where this matters (e.g., Set). Actually, almost  
all subclasses override #size.

>     2. Why is this not implemented with subclass responsibility?

It's the default implementation because so you only have to override  
#do: in a collection subclass. This default implementation is used,  
for example, in LinkedList.

- Bert -