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| author | David Feuer <david.feuer@gmail.com> | 2017-02-05 19:43:31 -0500 |
|---|---|---|
| committer | David Feuer <David.Feuer@gmail.com> | 2017-02-05 19:43:32 -0500 |
| commit | a2f39da0461b5da62a9020b0d98a1ce2765dd700 (patch) | |
| tree | 38333e49d205beb1ee81cf51cd92ee3b9dcdad66 /libraries/base/GHC/ST.hs | |
| parent | 54b9b064fc7960a4dbad387481bc3a6496cc397f (diff) | |
| download | haskell-a2f39da0461b5da62a9020b0d98a1ce2765dd700.tar.gz | |
Add liftA2 to Applicative class
* Make `liftA2` a method of `Applicative`.
* Add explicit `liftA2` definitions to instances in `base`.
* Add explicit invocations in `base`.
Reviewers: ekmett, bgamari, RyanGlScott, austin, hvr
Reviewed By: RyanGlScott
Subscribers: ekmett, RyanGlScott, rwbarton, thomie
Differential Revision: https://phabricator.haskell.org/D3031
Diffstat (limited to 'libraries/base/GHC/ST.hs')
| -rw-r--r-- | libraries/base/GHC/ST.hs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libraries/base/GHC/ST.hs b/libraries/base/GHC/ST.hs index dc5c71fe68..7982d598af 100644 --- a/libraries/base/GHC/ST.hs +++ b/libraries/base/GHC/ST.hs @@ -65,6 +65,7 @@ instance Applicative (ST s) where pure x = ST (\ s -> (# s, x #)) m *> k = m >>= \ _ -> k (<*>) = ap + liftA2 = liftM2 -- | @since 2.01 instance Monad (ST s) where |