Re: Another fold question

On Thu, Nov 06, 2003 at 03:41:32PM +1100, Thomas L. Bevan wrote:

patty,

what you have written is not a fold. A fold operates over a list. There is no list in your code, only some sort of tree structure.

I think you are wrong. Folds are not restricted to lists and lists are also "some sort of tree structure". See http://www.haskell.org/hawiki/WhatIsaFold Best regards, Tom -- .signature: Too many levels of symbolic links