[Haskell] [ANNOUNCE]: Ranged Sets

[Paul Johnson]

Martin Erwig wrote:

>
> For discrete value domains, you might also want to take a look at:
>
>   http://eecs.oregonstate.edu/~erwig/diet/
>   http://eecs.oregonstate.edu/~erwig/papers/abstracts.html#JFP98
>
Thanks.  I did actually consider using a tree structure instead of a 
list.  However trees don't cope with infinite lists, and I do 
particularly want infinite lists of ranges.

(Short pause for someone to point out that Wyzchyvski Heaps can process 
infinite lists in O(1) time).

Paul.