Graphics.UI.LUI.Accessor

Documentation

data Accessor whole part

accessor :: (whole -> part) -> (part -> whole -> whole) -> Accessor whole part

convertor :: (whole -> part) -> (part -> whole) -> Accessor whole part

(^.) :: whole -> Accessor whole part -> part

(^:) :: Accessor whole part -> (part -> part) -> whole -> whole

(<^) :: Accessor b c -> Accessor a b -> Accessor a c

(^>) :: Accessor a b -> Accessor b c -> Accessor a c

self :: Accessor a a

null :: [a] -> Bool

Test whether a list is empty.

reader :: r -> Accessor a r

write :: Accessor whole part -> part -> whole -> whole

afirst :: Accessor (a, b) a

asecond :: Accessor (a, b) b

anth :: Int -> Accessor [a] a

aMapValue :: Ord k => k -> Accessor (Map k a) a

aMapValueDefault :: Ord k => a -> k -> Accessor (Map k a) a