github/semantic
1
1
Fork 0
mirror of https://github.com/github/semantic.git synced 2024-12-23 06:41:45 +03:00
Code Issues Projects Releases Wiki Activity

Simplify maybeUnionRanges.

Browse Source
This commit is contained in:
Rob Rix 2016-03-04 20:03:37 -05:00
parent aea8e3e200
commit 6b17c3c1ff
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/Range.hs
View File

@ -73,8 +73,8 @@ unionRangesFrom :: (Functor f, Foldable f) => Range -> f Range -> Range
unionRangesFrom range ranges = option range id . foldl mappend mempty $ Option . Just <$> ranges unionRangesFrom range ranges = option range id . foldl mappend mempty $ Option . Just <$> ranges
-- | Return Just the union of all the ranges in a Foldable, or else Nothing. -- | Return Just the union of all the ranges in a Foldable, or else Nothing.
maybeUnionRanges :: (Functor f, Foldable f) => f Range -> Maybe Range maybeUnionRanges :: Foldable f => f Range -> Maybe Range
maybeUnionRanges ranges = getOption $ foldl mappend mempty $ Option . Just <$> ranges maybeUnionRanges ranges = getOption $ foldMap (Option . Just) ranges
instance Monoid (Option Range) where instance Monoid (Option Range) where
mempty = Option Nothing mempty = Option Nothing