Thanks for your assistance. I'm using now Notepad.exe . Before I did it in Wordpad. I use Windows XP. I'm trying to solve this nasty problem ----- Original Message ----- From: SCOTT J. To: haskell-cafe@haskell.org Sent: Thursday, April 21, 2005 5:16 PM Subject: [Haskell-cafe] a newbie's question Hi, I'm trying to investigate the list monad. I program instance Monad [] where xs >= f = concat ( map f xs ) return x = [x] a = [1,2,3] b = "there" do { x <- a y <- b return (x , y) } And I get the error Syntax error in input (unexpected backslash (lambda)) Jan ------------------------------------------------------------------------------ _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe