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| author | Austin Seipp <austin@well-typed.com> | 2015-02-17 09:08:12 -0600 |
|---|---|---|
| committer | Austin Seipp <austin@well-typed.com> | 2015-02-18 09:45:10 -0600 |
| commit | 91d9530525803403c3c012901115d54ff4fc3b5e (patch) | |
| tree | 8acf239cc007fb97696530567f7365d5b50b8c47 /libraries/base | |
| parent | 1b82619bc2ff36341d916c56b0cd67a378a9c222 (diff) | |
| download | haskell-91d9530525803403c3c012901115d54ff4fc3b5e.tar.gz | |
Revert "Eta-expand argument to foldr in mapM_ for []"
This change lacked justification (or a test!) for its improvements, and
I merged it on a sweep of Phabricator without fixing this. Trac #10034.
This reverts commit 7cf87fc6928f0252d9f61719e2344e6c69237079.
Diffstat (limited to 'libraries/base')
| -rw-r--r-- | libraries/base/Data/Foldable.hs | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/libraries/base/Data/Foldable.hs b/libraries/base/Data/Foldable.hs index b8b0973a8c..a745f66092 100644 --- a/libraries/base/Data/Foldable.hs +++ b/libraries/base/Data/Foldable.hs @@ -349,8 +349,7 @@ for_ = flip traverse_ -- As of base 4.8.0.0, 'mapM_' is just 'traverse_', specialized to -- 'Monad'. mapM_ :: (Foldable t, Monad m) => (a -> m b) -> t a -> m () -{-# INLINE mapM_ #-} -mapM_ f = foldr (\m n -> f m >> n) (return ()) +mapM_ f= foldr ((>>) . f) (return ()) -- | 'forM_' is 'mapM_' with its arguments flipped. For a version that -- doesn't ignore the results see 'Data.Traversable.forM'. |