Jeff Polakow wrote:
Then, I immediately blow my stack if I try something like:mean [1..1000000000].The culprit is actually sum which is defined in the base libraries as either a foldl or a direct recursion depending on a compiler flag. In either case, the code is not strict enough; just trying to compute:sum [1..10000000]blows the stack. This can be easily fixed by defining a suitable strict sum:sum' = foldl' (+) 0 and now sum' has constant space.
OK *now* I'm worried... I thought sum was _already_ defined this way? o_O _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
