Nico Rolle wrote: > Hi > > I tried this but it diddn't work in ghci: > > import qualified Data.Map as Map > > test :: Map.Map [Int] [[Int]] -> Bool > test (fromList[((i:is), (j:js))]) = [i] == j > > i get the : "Parse error in pattern > Failed." error.
Pattern matching only works on constructors (and view patterns, but they are a bit more advanced.) I'm not sure what you are trying to accomplish, could you elaborate? Cheers, -- Jochem Berndsen | joc...@functor.nl GPG: 0xE6FABFAB _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
