Hi,

In message "Re: Enumerable#to_a can run forever"
    on Tue, 25 Dec 2007 13:00:48 +0900, Benjamin Kudria <ben / kudria.net> writes:

|Fair enough - but then does it make sense to have these operations 
|defined?

Because it's very pragmatically useful for most of the case.
Theoretical cleanliness is not my concern.

|Perhaps there should 
|be a way to distinguish between sets that are countable finite and those 
|that are countably infinite?

And adding one burden to library implementer (including me)?  

|Does 1.9 include provisions for handling 
|infinite lists or sets?

I think you mean generator.  If so, it has been supported since 1.8.

							matz.