[Haskell-cafe] Data.Map lookup signature

[Nico Rolle]

Hi everyone.

The docs in the web on http://www.haskell.org/ghc/docs
define Data.Map.lookup as follows:
http://www.haskell.org/ghc/docs
lookup :: Ord k => k -> Map k a -> Maybe a
but my version of ghci does i like that:
Data.Map.lookup :: (Ord k, Monad m) => k -> Data.Map.Map k a -> m a
but i need the 1. one.
my version of ghci is 6.8.2
regards