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-rw-r--r--src/Data/Dependent/EnumMap/Strict/Internal.hs4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/Data/Dependent/EnumMap/Strict/Internal.hs b/src/Data/Dependent/EnumMap/Strict/Internal.hs
index 7e54a64..0d944ba 100644
--- a/src/Data/Dependent/EnumMap/Strict/Internal.hs
+++ b/src/Data/Dependent/EnumMap/Strict/Internal.hs
@@ -247,7 +247,9 @@ partition :: (forall a. v a -> Bool) -> DEnumMap k v -> (DEnumMap k v, DEnumMap
partition f (DEnumMap m) =
bimap DEnumMap DEnumMap (IM.partition (\(KV _ v) -> f v) m)
--- partitionWithKey
+partitionWithKey :: Enum1 k => (forall a. k a -> v a -> Bool) -> DEnumMap k v -> (DEnumMap k v, DEnumMap k v)
+partitionWithKey f (DEnumMap m) =
+ bimap DEnumMap DEnumMap (IM.partitionWithKey (\i (KV inf v) -> case toEnum1 i inf of Some k -> f k (coe1 v)) m)
-- takeWhileAntitone
-- dropWhileAntitone