> The simplest and safest solution is to change foldl to foldl', but it produces > the unnecessary evaluation of `elem`s in addSetElem's.
Wrong. Please ignore it. $!! is better in a sense that it reduces the stack usage further than foldl' (foldl''s second argument needs stacks to be evaluated). -- Koji Nakahara _______________________________________________ Haskell mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell
