Re: [Haskell-cafe] using Map rather than FiniteMap

S. Alexander Jacobson writes:

After actually running the correct test, I am still getting semi-ridiculous space behavior (6k/pair)!

import qualified Map zipped =zip [1..] [1..100000]::[(Int,Int)] untup f (x,y) = f x y produce = foldr (untup Map.insert) Map.empty zipped fm = length $ Map.keys produce main = print $ fm

Two questions I'm currently too lazy to investigate myself: Does having 'zipped' at the top level mean that the program is keeping the entire 100,000-element list in memory? Also, would performance improve if you used Map.fromList? How about Map.fromAscList? -- David Menendez | "In this house, we obey the laws http://www.eyrie.org/~zednenem | of thermodynamics!"