Remove Control.Parallel*, now in package parallel

[haskell-directory.git] / Data / Foldable.hs

diff --git a/Data/Foldable.hs b/Data/Foldable.hs
index 1111a37..096a347 100644 (file)
--- a/Data/Foldable.hs
+++ b/Data/Foldable.hs
@@ -65,6 +65,10 @@ import Data.Maybe (fromMaybe, listToMaybe)
 import Data.Monoid
 import Data.Array
 
+#ifdef __NHC__
+import Control.Arrow (ArrowZero(..)) -- work around nhc98 typechecker problem
+#endif
+
 #ifdef __GLASGOW_HASKELL__
 import GHC.Exts (build)
 #endif
@@ -181,7 +185,7 @@ for_ :: (Foldable t, Applicative f) => t a -> (a -> f b) -> f ()
 {-# INLINE for_ #-}
 for_ = flip traverse_
 
--- | Map each element of a structure to an monadic action, evaluate
+-- | Map each element of a structure to a monadic action, evaluate
 -- these actions from left to right, and ignore the results.
 mapM_ :: (Foldable t, Monad m) => (a -> m b) -> t a -> m ()
 mapM_ f = foldr ((>>) . f) (return ())