On Mon, May 2, 2011 at 8:16 AM, Ivan Lazar Miljenovic <ivan.miljeno...@gmail.com> wrote: > On 2 May 2011 11:10, John Sneer <johnsn...@operamail.com> wrote: >> Hello all, >> >> I have rather strange question. I wonder whether there is an obvious >> solution or not in Haskell. I tried but without defining quite >> ugly tree-like structures and incorporating IORefs it seems to me like >> impossible. > > What you want seems more applicable to a Sequence rather than a list.
Or a mutable list, something like data MList s a = Nil | Cons (STRef s a) (STRef s (MList s a)) Cheers, -- Felipe. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
