-- | Same as 'difference'.
(\\) :: IntMap a -> IntMap b -> IntMap a
IntMap m1 \\ IntMap m2 = IntMap (m1 W.\\ m2)
(\\) :: IntMap a -> IntMap b -> IntMap a
IntMap m1 \\ IntMap m2 = IntMap (m1 W.\\ m2)
IntMap m1 \\ IntMap m2 = IntMap (m1 W.\\ m2)