diff options
Diffstat (limited to 'libraries')
| -rw-r--r-- | libraries/base/Data/Functor/Compose.hs | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/libraries/base/Data/Functor/Compose.hs b/libraries/base/Data/Functor/Compose.hs index ca659cd1b7..d705e8ee70 100644 --- a/libraries/base/Data/Functor/Compose.hs +++ b/libraries/base/Data/Functor/Compose.hs @@ -27,13 +27,11 @@ module Data.Functor.Compose ( ) where import Data.Functor.Classes -import Data.Functor.Utils (Max(..), Min(..)) import Control.Applicative import Data.Coerce (coerce) import Data.Data (Data) import Data.Foldable (Foldable(..)) -import Data.Maybe (fromMaybe) import Data.Monoid (Sum(..), All(..), Any(..), Product(..)) import Data.Type.Equality (TestEquality(..), (:~:)(..)) import GHC.Generics (Generic, Generic1) @@ -127,10 +125,8 @@ instance (Foldable f, Foldable g) => Foldable (Compose f g) where length (Compose t) = getSum (foldMap' (Sum . length) t) elem x (Compose t) = getAny (foldMap (Any . elem x) t) - minimum (Compose fga) = - fromMaybe (error "minimum: empty structure") $ getMin $ foldMap' (\ga -> if null ga then Min Nothing else Min $ Just $ minimum ga) fga - maximum (Compose fga) = - fromMaybe (error "maximum: empty structure") $ getMax $ foldMap' (\ga -> if null ga then Max Nothing else Max $ Just $ maximum ga) fga + minimum (Compose fga) = minimum $ map minimum $ filter (not . null) $ toList fga + maximum (Compose fga) = maximum $ map maximum $ filter (not . null) $ toList fga sum (Compose t) = getSum (foldMap' (Sum . sum) t) product (Compose t) = getProduct (foldMap' (Product . product) t) |