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authorBen Gamari <ben@smart-cactus.org>2021-01-05 15:54:42 -0500
committerBen Gamari <ben@smart-cactus.org>2021-01-05 16:14:31 -0500
commit1e56f63c3197e7ca1c1e506e083c2bad25d08793 (patch)
tree7152e5a53fe1c18e6fd5044d5aa3168ab99c3cc6 /html-test/src/Bug975.hs
parent1d657cf377b5f147b08aafb3ab3a5d11be538331 (diff)
parent665226f384ee9b0a66a98638ede9eff845f6c45b (diff)
Merge remote-tracking branch 'origin/ghc-8.10' into ghc-9.0
Diffstat (limited to 'html-test/src/Bug975.hs')
-rw-r--r--html-test/src/Bug975.hs15
1 files changed, 15 insertions, 0 deletions
diff --git a/html-test/src/Bug975.hs b/html-test/src/Bug975.hs
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+{-# LANGUAGE ExplicitForAll #-}
+module Bug973 where
+
+showRead
+ :: forall a b. (Show a, Read b)
+ => a -- ^ this gets turned into a string...
+ -> b -- ^ ...from which this is read
+showRead = read . show
+
+-- | Same as 'showRead', but with type variable order flipped
+showRead'
+ :: forall b a. (Show a, Read b)
+ => a -- ^ this gets turned into a string...
+ -> b -- ^ ...from which this is read
+showRead' = read . show