Copyright	(C) 2012-2016 Edward Kmett
License	BSD-style (see the file LICENSE)
Maintainer	Edward Kmett <ekmett@gmail.com>
Stability	experimental
Portability	non-portable
Safe Haskell	Safe
Language	Haskell98

Control.Lens.Internal.Zoom

Contents

Zoom
Magnify

Description

Synopsis

Zoom

newtype Focusing m s a #

Used by Zoom to zoom into StateT.

Constructors

Focusing
Fields unfocusing :: m (s, a)

Instances

Monad m => Functor (Focusing m s) #
Methods fmap :: (a -> b) -> Focusing m s a -> Focusing m s b # (<$) :: a -> Focusing m s b -> Focusing m s a #
(Monad m, Monoid s) => Applicative (Focusing m s) #
Methods pure :: a -> Focusing m s a # (<>) :: Focusing m s (a -> b) -> Focusing m s a -> Focusing m s b # (>) :: Focusing m s a -> Focusing m s b -> Focusing m s b # (<*) :: Focusing m s a -> Focusing m s b -> Focusing m s a #
(Monad m, Semigroup s) => Apply (Focusing m s) #
Methods (<.>) :: Focusing m s (a -> b) -> Focusing m s a -> Focusing m s b # (.>) :: Focusing m s a -> Focusing m s b -> Focusing m s b # (<.) :: Focusing m s a -> Focusing m s b -> Focusing m s a #

newtype FocusingWith w m s a #

Used by Zoom to zoom into RWST.

Constructors

FocusingWith
Fields unfocusingWith :: m (s, a, w)

Instances

Monad m => Functor (FocusingWith w m s) #
Methods fmap :: (a -> b) -> FocusingWith w m s a -> FocusingWith w m s b # (<$) :: a -> FocusingWith w m s b -> FocusingWith w m s a #
(Monad m, Monoid s, Monoid w) => Applicative (FocusingWith w m s) #
Methods pure :: a -> FocusingWith w m s a # (<>) :: FocusingWith w m s (a -> b) -> FocusingWith w m s a -> FocusingWith w m s b # (>) :: FocusingWith w m s a -> FocusingWith w m s b -> FocusingWith w m s b # (<*) :: FocusingWith w m s a -> FocusingWith w m s b -> FocusingWith w m s a #
(Monad m, Semigroup s, Semigroup w) => Apply (FocusingWith w m s) #
Methods (<.>) :: FocusingWith w m s (a -> b) -> FocusingWith w m s a -> FocusingWith w m s b # (.>) :: FocusingWith w m s a -> FocusingWith w m s b -> FocusingWith w m s b # (<.) :: FocusingWith w m s a -> FocusingWith w m s b -> FocusingWith w m s a #

newtype FocusingPlus w k s a #

Used by Zoom to zoom into WriterT.

Constructors

FocusingPlus
Fields unfocusingPlus :: k (s, w) a

Instances

Functor (k (s, w)) => Functor (FocusingPlus w k s) #
Methods fmap :: (a -> b) -> FocusingPlus w k s a -> FocusingPlus w k s b # (<$) :: a -> FocusingPlus w k s b -> FocusingPlus w k s a #
Applicative (k (s, w)) => Applicative (FocusingPlus w k s) #
Methods pure :: a -> FocusingPlus w k s a # (<>) :: FocusingPlus w k s (a -> b) -> FocusingPlus w k s a -> FocusingPlus w k s b # (>) :: FocusingPlus w k s a -> FocusingPlus w k s b -> FocusingPlus w k s b # (<*) :: FocusingPlus w k s a -> FocusingPlus w k s b -> FocusingPlus w k s a #
Apply (k (s, w)) => Apply (FocusingPlus w k s) #
Methods (<.>) :: FocusingPlus w k s (a -> b) -> FocusingPlus w k s a -> FocusingPlus w k s b # (.>) :: FocusingPlus w k s a -> FocusingPlus w k s b -> FocusingPlus w k s b # (<.) :: FocusingPlus w k s a -> FocusingPlus w k s b -> FocusingPlus w k s a #

newtype FocusingOn f k s a #

Used by Zoom to zoom into MaybeT or ListT.

Constructors

FocusingOn
Fields unfocusingOn :: k (f s) a

Instances

Functor (k (f s)) => Functor (FocusingOn f k s) #
Methods fmap :: (a -> b) -> FocusingOn f k s a -> FocusingOn f k s b # (<$) :: a -> FocusingOn f k s b -> FocusingOn f k s a #
Applicative (k (f s)) => Applicative (FocusingOn f k s) #
Methods pure :: a -> FocusingOn f k s a # (<>) :: FocusingOn f k s (a -> b) -> FocusingOn f k s a -> FocusingOn f k s b # (>) :: FocusingOn f k s a -> FocusingOn f k s b -> FocusingOn f k s b # (<*) :: FocusingOn f k s a -> FocusingOn f k s b -> FocusingOn f k s a #
Apply (k (f s)) => Apply (FocusingOn f k s) #
Methods (<.>) :: FocusingOn f k s (a -> b) -> FocusingOn f k s a -> FocusingOn f k s b # (.>) :: FocusingOn f k s a -> FocusingOn f k s b -> FocusingOn f k s b # (<.) :: FocusingOn f k s a -> FocusingOn f k s b -> FocusingOn f k s a #

newtype FocusingMay k s a #

Used by Zoom to zoom into ErrorT.

Constructors

FocusingMay
Fields unfocusingMay :: k (May s) a

Instances

Functor (k (May s)) => Functor (FocusingMay k s) #
Methods fmap :: (a -> b) -> FocusingMay k s a -> FocusingMay k s b # (<$) :: a -> FocusingMay k s b -> FocusingMay k s a #
Applicative (k (May s)) => Applicative (FocusingMay k s) #
Methods pure :: a -> FocusingMay k s a # (<>) :: FocusingMay k s (a -> b) -> FocusingMay k s a -> FocusingMay k s b # (>) :: FocusingMay k s a -> FocusingMay k s b -> FocusingMay k s b # (<*) :: FocusingMay k s a -> FocusingMay k s b -> FocusingMay k s a #
Apply (k (May s)) => Apply (FocusingMay k s) #
Methods (<.>) :: FocusingMay k s (a -> b) -> FocusingMay k s a -> FocusingMay k s b # (.>) :: FocusingMay k s a -> FocusingMay k s b -> FocusingMay k s b # (<.) :: FocusingMay k s a -> FocusingMay k s b -> FocusingMay k s a #

newtype May a #

Make a Monoid out of Maybe for error handling.

Constructors

May
Fields getMay :: Maybe a

Instances

Semigroup a => Semigroup (May a) #
Methods (<>) :: May a -> May a -> May a # sconcat :: NonEmpty (May a) -> May a # stimes :: Integral b => b -> May a -> May a #
Monoid a => Monoid (May a) #
Methods mempty :: May a # mappend :: May a -> May a -> May a # mconcat :: [May a] -> May a #

newtype FocusingErr e k s a #

Used by Zoom to zoom into ErrorT.

Constructors

FocusingErr
Fields unfocusingErr :: k (Err e s) a

Instances

Functor (k (Err e s)) => Functor (FocusingErr e k s) #
Methods fmap :: (a -> b) -> FocusingErr e k s a -> FocusingErr e k s b # (<$) :: a -> FocusingErr e k s b -> FocusingErr e k s a #
Applicative (k (Err e s)) => Applicative (FocusingErr e k s) #
Methods pure :: a -> FocusingErr e k s a # (<>) :: FocusingErr e k s (a -> b) -> FocusingErr e k s a -> FocusingErr e k s b # (>) :: FocusingErr e k s a -> FocusingErr e k s b -> FocusingErr e k s b # (<*) :: FocusingErr e k s a -> FocusingErr e k s b -> FocusingErr e k s a #
Apply (k (Err e s)) => Apply (FocusingErr e k s) #
Methods (<.>) :: FocusingErr e k s (a -> b) -> FocusingErr e k s a -> FocusingErr e k s b # (.>) :: FocusingErr e k s a -> FocusingErr e k s b -> FocusingErr e k s b # (<.) :: FocusingErr e k s a -> FocusingErr e k s b -> FocusingErr e k s a #

newtype Err e a #

Make a Monoid out of Either for error handling.

Constructors

Err
Fields getErr :: Either e a

Instances

Semigroup a => Semigroup (Err e a) #
Methods (<>) :: Err e a -> Err e a -> Err e a # sconcat :: NonEmpty (Err e a) -> Err e a # stimes :: Integral b => b -> Err e a -> Err e a #
Monoid a => Monoid (Err e a) #
Methods mempty :: Err e a # mappend :: Err e a -> Err e a -> Err e a # mconcat :: [Err e a] -> Err e a #

newtype FocusingFree f m k s a #

Used by Zoom to zoom into FreeT

Constructors

FocusingFree
Fields unfocusingFree :: k (Freed f m s) a

Instances

Functor (k (Freed f m s)) => Functor (FocusingFree f m k s) #
Methods fmap :: (a -> b) -> FocusingFree f m k s a -> FocusingFree f m k s b # (<$) :: a -> FocusingFree f m k s b -> FocusingFree f m k s a #
Applicative (k (Freed f m s)) => Applicative (FocusingFree f m k s) #
Methods pure :: a -> FocusingFree f m k s a # (<>) :: FocusingFree f m k s (a -> b) -> FocusingFree f m k s a -> FocusingFree f m k s b # (>) :: FocusingFree f m k s a -> FocusingFree f m k s b -> FocusingFree f m k s b # (<*) :: FocusingFree f m k s a -> FocusingFree f m k s b -> FocusingFree f m k s a #
Apply (k (Freed f m s)) => Apply (FocusingFree f m k s) #
Methods (<.>) :: FocusingFree f m k s (a -> b) -> FocusingFree f m k s a -> FocusingFree f m k s b # (.>) :: FocusingFree f m k s a -> FocusingFree f m k s b -> FocusingFree f m k s b # (<.) :: FocusingFree f m k s a -> FocusingFree f m k s b -> FocusingFree f m k s a #

newtype Freed f m a #

Make a Monoid out of FreeF for result collection.

Constructors

Freed
Fields getFreed :: FreeF f a (FreeT f m a)

Instances

(Applicative f, Semigroup a, Monad m) => Semigroup (Freed f m a) #
Methods (<>) :: Freed f m a -> Freed f m a -> Freed f m a # sconcat :: NonEmpty (Freed f m a) -> Freed f m a # stimes :: Integral b => b -> Freed f m a -> Freed f m a #
(Applicative f, Monoid a, Monad m) => Monoid (Freed f m a) #
Methods mempty :: Freed f m a # mappend :: Freed f m a -> Freed f m a -> Freed f m a # mconcat :: [Freed f m a] -> Freed f m a #

Magnify

newtype Effect m r a #

Wrap a monadic effect with a phantom type argument.

Constructors

Effect
Fields getEffect :: m r

Instances

Functor (Effect m r) #
Methods fmap :: (a -> b) -> Effect m r a -> Effect m r b # (<$) :: a -> Effect m r b -> Effect m r a #
(Monad m, Monoid r) => Applicative (Effect m r) #
Methods pure :: a -> Effect m r a # (<>) :: Effect m r (a -> b) -> Effect m r a -> Effect m r b # (>) :: Effect m r a -> Effect m r b -> Effect m r b # (<*) :: Effect m r a -> Effect m r b -> Effect m r a #
Contravariant (Effect m r) #
Methods contramap :: (a -> b) -> Effect m r b -> Effect m r a # (>$) :: b -> Effect m r b -> Effect m r a #
(Apply m, Semigroup r) => Apply (Effect m r) #
Methods (<.>) :: Effect m r (a -> b) -> Effect m r a -> Effect m r b # (.>) :: Effect m r a -> Effect m r b -> Effect m r b # (<.) :: Effect m r a -> Effect m r b -> Effect m r a #
(Apply m, Semigroup r) => Semigroup (Effect m r a) #
Methods (<>) :: Effect m r a -> Effect m r a -> Effect m r a # sconcat :: NonEmpty (Effect m r a) -> Effect m r a # stimes :: Integral b => b -> Effect m r a -> Effect m r a #
(Monad m, Monoid r) => Monoid (Effect m r a) #
Methods mempty :: Effect m r a # mappend :: Effect m r a -> Effect m r a -> Effect m r a # mconcat :: [Effect m r a] -> Effect m r a #

newtype EffectRWS w st m s a #

Wrap a monadic effect with a phantom type argument. Used when magnifying RWST.

Constructors

EffectRWS
Fields getEffectRWS :: st -> m (s, st, w)

Instances

Functor (EffectRWS w st m s) #
Methods fmap :: (a -> b) -> EffectRWS w st m s a -> EffectRWS w st m s b # (<$) :: a -> EffectRWS w st m s b -> EffectRWS w st m s a #
(Monoid s, Monoid w, Monad m) => Applicative (EffectRWS w st m s) #
Methods pure :: a -> EffectRWS w st m s a # (<>) :: EffectRWS w st m s (a -> b) -> EffectRWS w st m s a -> EffectRWS w st m s b # (>) :: EffectRWS w st m s a -> EffectRWS w st m s b -> EffectRWS w st m s b # (<*) :: EffectRWS w st m s a -> EffectRWS w st m s b -> EffectRWS w st m s a #
Contravariant (EffectRWS w st m s) #
Methods contramap :: (a -> b) -> EffectRWS w st m s b -> EffectRWS w st m s a # (>$) :: b -> EffectRWS w st m s b -> EffectRWS w st m s a #
(Semigroup s, Semigroup w, Bind m) => Apply (EffectRWS w st m s) #
Methods (<.>) :: EffectRWS w st m s (a -> b) -> EffectRWS w st m s a -> EffectRWS w st m s b # (.>) :: EffectRWS w st m s a -> EffectRWS w st m s b -> EffectRWS w st m s b # (<.) :: EffectRWS w st m s a -> EffectRWS w st m s b -> EffectRWS w st m s a #