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📝 cacheLookup.

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Rob Rix 2017-12-20 16:15:06 -05:00
parent 7f8755b748
commit 5488187caf
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src/Data/Abstract/Cache.hs
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@ -18,6 +18,7 @@ deriving instance (Show l, Show t, Show v, Show (Cell l v)) => Show (Cache l t v
deriving instance (Ord l, Ord t, Ord v, Ord (Cell l v)) => Semigroup (Cache l t v) deriving instance (Ord l, Ord t, Ord v, Ord (Cell l v)) => Semigroup (Cache l t v)
deriving instance (Ord l, Ord t, Ord v, Ord (Cell l v)) => Monoid (Cache l t v) deriving instance (Ord l, Ord t, Ord v, Ord (Cell l v)) => Monoid (Cache l t v)
-- | Look up the resulting value & 'Store' for a given 'Configuration'.
cacheLookup :: (Ord l, Ord t, Ord v, Ord (Cell l v)) => Configuration l t v -> Cache l t v -> Maybe (Set (v, Store l v)) cacheLookup :: (Ord l, Ord t, Ord v, Ord (Cell l v)) => Configuration l t v -> Cache l t v -> Maybe (Set (v, Store l v))
cacheLookup key = Map.lookup key . unCache cacheLookup key = Map.lookup key . unCache