empty :: FunMap k v
empty = FunMap f
    where f _ = Nothing


-- | Creates a FunMap with a single element inside it.
empty :: FunMap k v
empty = FunMap f
    where f _ = Nothing


-- | Creates a FunMap with a single element inside it.
empty = FunMap f
    where f _ = Nothing


-- | Creates a FunMap with a single element inside it.