Repository : ssh://g...@git.haskell.org/base
On branch : master
Link :
http://ghc.haskell.org/trac/ghc/changeset/ebc85262ccfbb65db71d7fdff7a35c8178b99f18/base
>---------------------------------------------------------------
commit ebc85262ccfbb65db71d7fdff7a35c8178b99f18
Author: Krzysztof Gogolewski <krz.gogolew...@gmail.com>
Date: Mon Oct 14 21:47:40 2013 +0200
Add Show and Read instances for Data.Ord.Down
libraries mailing list thread "Proposal: Show and Read for Data.Ord.Down",
Sep 2013, http://www.haskell.org/pipermail/libraries/2013-September/020867.html
>---------------------------------------------------------------
ebc85262ccfbb65db71d7fdff7a35c8178b99f18
Data/Ord.hs | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/Data/Ord.hs b/Data/Ord.hs
index f7d32f6..a574b83 100644
--- a/Data/Ord.hs
+++ b/Data/Ord.hs
@@ -23,6 +23,8 @@ module Data.Ord (
) where
import GHC.Base
+import GHC.Show
+import GHC.Read
-- |
-- > comparing p x y = compare (p x) (p y)
@@ -42,7 +44,8 @@ comparing p x y = compare (p x) (p y)
-- as in: @then sortWith by 'Down' x@
--
-- /Since: 4.6.0.0/
-newtype Down a = Down a deriving (Eq)
+-- Show and Read instances /Since: 4.7.0.0/
+newtype Down a = Down a deriving (Eq, Show, Read)
instance Ord a => Ord (Down a) where
compare (Down x) (Down y) = y `compare` x
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