[Haskell-cafe] eager/strict eval katas
benja.fallenstein at gmail.com
Wed Dec 12 15:50:23 EST 2007
On Dec 12, 2007 5:31 PM, Thomas Hartman <thomas.hartman at db.com> 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.
More information about the Haskell-Cafe