rl: > On 12/05/2009, at 14:45, Reiner Pope wrote: > >> The Stream datatype seems to be much better suited to representing >> loops than the list datatype is. So, instead of programming with the >> lists, why don't we just use the Stream datatype directly? > > I think the main reason is that streams don't store data and therefore > don't support sharing. That is, in > > let xs = map f ys in (sum xs, product xs) > > the elements of xs will be computed once if it is a list but twice if it > is a stream. >
The other issue is reminding developers to preserve stream invariants, so as not to break the heavy duty rewriting that's going to happen to their code. Still, if someone finds a use for it, proceed! -- Don _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe