On Tue, Jul 28, 2009 at 03:21:38AM +0900, Marcin Grski wrote:
> It would be nice to have for example {5, 1, 1, 1} in Set class object.
> Is it possible? Which method should I use to add element in that way?

Sounds like you want a Bag, not a Set. I don't know of aany implementation but
it's probably not hard to create one - all you have to do is keep track of the
count of each element.

-- 
Jos Backus
jos at catnook.com