Hi Thomas, On Dec 12, 2007 5:31 PM, Thomas Hartman <[EMAIL PROTECTED]> wrote: > (solution involves building an accum list of (average,listLength) tuples. > again you can't do a naive fold due to stack overflow, but in this case even > strict foldl' from data.list isn't "strict enough", I had to define my own > custom fold to be strict on the tuples.)
Might it be worthwhile considering the use of a custom strict pair type instead of rewriting the strict fold functions? I.e., define data Pair a b = Pair !a !b and then use ordinary foldl' and foldr' on that. Best, - Benja _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe