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add GHC.HetMet.{hetmet_kappa,hetmet_kappa_app}
[ghc-base.git]
/
Data
/
Either.hs
diff --git
a/Data/Either.hs
b/Data/Either.hs
index
6af488f
..
6ffc607
100644
(file)
--- a/
Data/Either.hs
+++ b/
Data/Either.hs
@@
-1,4
+1,8
@@
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP, NoImplicitPrelude #-}
+#ifdef __GLASGOW_HASKELL__
+{-# LANGUAGE DeriveDataTypeable, DeriveGeneric, StandaloneDeriving #-}
+#endif
+
-----------------------------------------------------------------------------
-- |
-- Module : Data.Either
-----------------------------------------------------------------------------
-- |
-- Module : Data.Either
@@
-30,6
+34,7
@@
import GHC.Read
#endif
import Data.Typeable
#endif
import Data.Typeable
+import GHC.Generics (Generic)
#ifdef __GLASGOW_HASKELL__
{-
#ifdef __GLASGOW_HASKELL__
{-
@@
-47,7
+52,8
@@
either correct or an error; by convention, the 'Left' constructor is
used to hold an error value and the 'Right' constructor is used to
hold a correct value (mnemonic: \"right\" also means \"correct\").
-}
used to hold an error value and the 'Right' constructor is used to
hold a correct value (mnemonic: \"right\" also means \"correct\").
-}
-data Either a b = Left a | Right b deriving (Eq, Ord, Read, Show)
+data Either a b = Left a | Right b
+ deriving (Eq, Ord, Read, Show, Generic)
-- | Case analysis for the 'Either' type.
-- If the value is @'Left' a@, apply the first function to @a@;
-- | Case analysis for the 'Either' type.
-- If the value is @'Left' a@, apply the first function to @a@;
@@
-79,8
+85,8
@@
rights x = [a | Right a <- x]
partitionEithers :: [Either a b] -> ([a],[b])
partitionEithers = foldr (either left right) ([],[])
where
partitionEithers :: [Either a b] -> ([a],[b])
partitionEithers = foldr (either left right) ([],[])
where
- left a (l, r) = (a:l, r)
- right a (l, r) = (l, a:r)
+ left a ~(l, r) = (a:l, r)
+ right a ~(l, r) = (l, a:r)
{-
{--------------------------------------------------------------------
{-
{--------------------------------------------------------------------