>
> It's definitely something to think about, for now, I'll leave it,  
> it's been in my image quite a while, and only SkipList overrides it  
> with a more specific implementation.  I'm still using 3.8, it'll be  
> interesting to see how 3.9 and it's traits refactorings on the  
> collections affect this.

there is no refactoring of collection in 3.9.
I think that what would be nice is to regularly add some tests to the  
collections to that at the end we get a really good coverage.
This could be a success factor if one day someone wants to refactor  
them.

stef