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NonEmptyList: newtype derive Foldable1 #144

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Merged
garyb merged 2 commits into from
May 22, 2018
Merged

NonEmptyList: newtype derive Foldable1 #144

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NonEmptyList: newtype derive Foldable1
matthewleon Jan 27, 2018
34e83ce
Merge branch 'compiler/0.12' into NonEmpty-Derive-Foldable1
garyb May 22, 2018
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6 changes: 1 addition & 5 deletions src/Data/List/Types.purs
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Original file line number Diff line number Diff line change
Expand Up @@ -211,11 +211,7 @@ derive newtype instance foldableNonEmptyList :: Foldable NonEmptyList

derive newtype instance traversableNonEmptyList :: Traversable NonEmptyList

instance foldable1NonEmptyList :: Foldable1 NonEmptyList where
fold1 (NonEmptyList (a :| as)) =
foldl append a as
foldMap1 f (NonEmptyList (a :| as)) =
foldl (\acc -> append acc <<< f) (f a) as
derive newtype instance foldable1NonEmptyList :: Foldable1 NonEmptyList

instance traversable1NonEmptyList :: Traversable1 NonEmptyList where
traverse1 f (NonEmptyList (a :| as)) =
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