diff options
Diffstat (limited to 'compiler/GHC/Data/Maybe.hs')
| -rw-r--r-- | compiler/GHC/Data/Maybe.hs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/GHC/Data/Maybe.hs b/compiler/GHC/Data/Maybe.hs index 6e68ef7d0a..1e8424c0a4 100644 --- a/compiler/GHC/Data/Maybe.hs +++ b/compiler/GHC/Data/Maybe.hs @@ -35,6 +35,7 @@ import Data.Maybe import Data.Foldable ( foldlM, for_ ) import GHC.Utils.Misc (HasCallStack) import Data.List.NonEmpty ( NonEmpty ) +import Control.Applicative( Alternative( (<|>) ) ) infixr 4 `orElse` @@ -47,7 +48,7 @@ infixr 4 `orElse` -} firstJust :: Maybe a -> Maybe a -> Maybe a -firstJust a b = firstJusts [a, b] +firstJust = (<|>) -- | Takes a list of @Maybes@ and returns the first @Just@ if there is one, or -- @Nothing@ otherwise. |