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| author | David Feuer <david.feuer@gmail.com> | 2014-11-23 22:00:48 +0100 |
|---|---|---|
| committer | Herbert Valerio Riedel <hvr@gnu.org> | 2014-11-23 22:02:20 +0100 |
| commit | cc7a735f015510dda6f69d4a48d1b0cdd55856ba (patch) | |
| tree | 4872d558c2d97a62cd8a8b6538090b4d963f4930 | |
| parent | 96d29b5403bd8a6465a65a39da861f5b9610fc89 (diff) | |
| download | haskell-cc7a735f015510dda6f69d4a48d1b0cdd55856ba.tar.gz | |
Define void using <$ (re #9827)
`() <$ x` is sometimes better than `fmap (const ()) x` and should
never be worse.
Reviewed By: ekmett
Differential Revision: https://phabricator.haskell.org/D521
| -rw-r--r-- | libraries/base/Data/Functor.hs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libraries/base/Data/Functor.hs b/libraries/base/Data/Functor.hs index 9db4c8fd5c..c12564f23c 100644 --- a/libraries/base/Data/Functor.hs +++ b/libraries/base/Data/Functor.hs @@ -23,7 +23,7 @@ module Data.Functor void, ) where -import GHC.Base ( Functor(..), const, flip ) +import GHC.Base ( Functor(..), flip ) -- $setup -- Allow the use of Prelude in doctests. @@ -140,4 +140,4 @@ infixl 4 $> -- 2 -- void :: Functor f => f a -> f () -void = fmap (const ()) +void x = () <$ x |