On 12.11.2009, at 12:49, radoslav hodnicak wrote:

> 
> In all my time I've been programming in Smalltalk (since about 2000), the idea that Sets simply do not contain nil was a core assumption of using collection classes for me, not just an implementation detail. I routinely do "something asSet" to get rid of nils, and this change would break all my code.

(Array new: 5) asSet

raises an error in Squeak ...

> Now, I obvioulsy do not see the value of allowing Sets to contain nil, but other people do. How about creating a new class to handle this? NilSet or whatever
> 
> rado

Not a bad suggestion. SetWithNil?

- Bert -