Warning fix for unused and redundant imports

[ghc-hetmet.git] / compiler / utils / Util.lhs

diff --git a/compiler/utils/Util.lhs b/compiler/utils/Util.lhs
index a7b65e8..39fd64b 100644 (file)
--- a/compiler/utils/Util.lhs
+++ b/compiler/utils/Util.lhs
@@ -12,7 +12,7 @@ module Util (
         zipLazy, stretchZipWith,
        mapFst, mapSnd,
        mapAndUnzip, mapAndUnzip3,
-       nOfThem, filterOut, partitionWith,
+       nOfThem, filterOut, partitionWith, splitEithers,
 
        lengthExceeds, lengthIs, lengthAtLeast, 
        listLengthCmp, atLength, equalLength, compareLength,
@@ -177,6 +177,13 @@ partitionWith f (x:xs) = case f x of
                       where
                         (bs,cs) = partitionWith f xs
 
+splitEithers :: [Either a b] -> ([a], [b])
+splitEithers [] = ([],[])
+splitEithers (e : es) = case e of
+                         Left x -> (x:xs, ys)
+                         Right y -> (xs, y:ys)
+                     where
+                       (xs,ys) = splitEithers es
 \end{code}
 
 A paranoid @zip@ (and some @zipWith@ friends) that checks the lists
@@ -883,13 +890,9 @@ handleDyn :: Typeable ex => (ex -> IO a) -> IO a -> IO a
 handleDyn = flip catchDyn
 
 handle :: (Exception -> IO a) -> IO a -> IO a
-#if __GLASGOW_HASKELL__ < 501
-handle = flip Exception.catchAllIO
-#else
 handle h f = f `Exception.catch` \e -> case e of
     ExitException _ -> throw e
     _               -> h e
-#endif
 
 -- --------------------------------------------------------------
 -- check existence & modification time at the same time