Re: [Haskell-cafe] Links into list

On Mon, May 2, 2011 at 8:16 AM, Ivan Lazar Miljenovic wrote:

On 2 May 2011 11:10, John Sneer 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.