I don't understand your response. I copied the imports from Hoogles Data.Map page. What should the imports be? Michael --- On Mon, 6/8/09, Jochem Berndsen <jochem@functor.nl> wrote: From: Jochem Berndsen <jochem@functor.nl> Subject: Re: [Haskell-cafe] Problem with Data.Map To: "michael rice" <nowgate@yahoo.com> Cc: haskell-cafe@haskell.org Date: Monday, June 8, 2009, 12:45 PM michael rice wrote:
I'm trying to understand Map type for possible use in another problem I'm working on, but am stymied right off the bat.
==========Here's my source:
import Data.Map (Map) import qualified Data.Map as Map
*Main> fromList $ zip l1 l2
<interactive>:1:0: Not in scope: `fromList'
You imported map "qualified as Map", that means that only 'Map.fromList' and 'Data.Map.fromList' are in scope, and not 'fromList'. The reason one normally does it like this is that a lot of function names clash with the Prelude (on purpose). Normally one uses "qualified as M" or "qualified as Map" to shorten the notation. HTH, -- Jochem Berndsen | jochem@functor.nl GPG: 0xE6FABFAB