Yukihiro Matsumoto wrote: > That's the point. My guess is a Range should work as both, depending > on a method called. I think I have to define useful / natural set of > method names for each definition of a range. What about a class Continuum and a class Sequence? (naming is not important now) Perhaps as subclasses of Range. A little more complex, but less confusing. Tobi -- http://www.pinkjuice.com/