[Haskell-beginners] Printing the entries of a Data.Map m

Hi all, I have a map with some two thousand entries. Now I want to print that map. I could do: print m but I like to use my own print function: mapM_ myprint (Map.toList m) I may be wrong but having to use Map.toList looks pretty inefficient. Question: I'd like to know if there is a more efficient way to do it? -- Manfred