On Tue, Jul 05, 2005 at 12:30:56PM -0500, Henry Cejtin wrote: > As Stephen said, sharing can be vital any way. As an example, if you had > a circular list (using ref's of course) then without sharing it would be > infinite. That's impossible to acheive without refs.... AFAICT, with ref-less SML you can never have any cycles. -- Wesley W. Terpstra