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📝 storeLookupAll.

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Rob Rix 2017-12-20 17:18:07 -05:00
parent 48ac9e284a
commit 1ea1d1e0ca
1 changed files with 1 additions and 0 deletions
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src/Data/Abstract/Store.hs
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@ -28,6 +28,7 @@ deriving instance Traversable (Cell l) => Traversable (Store l)
storeLookup :: Ord l => Address l a -> Store l a -> Maybe (Cell l a)
storeLookup (Address address) = Map.lookup address . unStore
-- | Look up the list of values stored for a given address, if any.
storeLookupAll :: (Ord l, Foldable (Cell l)) => Address l a -> Store l a -> Maybe [a]
storeLookupAll address = fmap toList . storeLookup address