Data.Machine.Mealy

http://en.wikipedia.org/wiki/Mealy_machine

Documentation

newtype Mealy a b

Mealy machines

Examples

We can enumerate inputs:

>>> let countingMealy = unfoldMealy (\i x -> ((i, x), i + 1)) 0
>>> run (auto countingMealy <~ source "word")
[(0,'w'),(1,'o'),(2,'r'),(3,'d')]

Constructors

Mealy

Fields

• runMealy :: a -> (b, Mealy a b)

Instances

Arrow Mealy

Defined in Data.Machine.Mealy

Methods

arr :: (b -> c) -> Mealy b c

first :: Mealy b c -> Mealy (b, d) (c, d)

second :: Mealy b c -> Mealy (d, b) (d, c)

(***) :: Mealy b c -> Mealy b' c' -> Mealy (b, b') (c, c')

(&&&) :: Mealy b c -> Mealy b c' -> Mealy b (c, c')

ArrowChoice Mealy

Defined in Data.Machine.Mealy

Methods

left :: Mealy b c -> Mealy (Either b d) (Either c d)

right :: Mealy b c -> Mealy (Either d b) (Either d c)

(+++) :: Mealy b c -> Mealy b' c' -> Mealy (Either b b') (Either c c')

(|||) :: Mealy b d -> Mealy c d -> Mealy (Either b c) d

ArrowApply Mealy

Defined in Data.Machine.Mealy

Methods

app :: Mealy (Mealy b c, b) c

Profunctor Mealy

Defined in Data.Machine.Mealy

Methods

dimap :: (a -> b) -> (c -> d) -> Mealy b c -> Mealy a d

lmap :: (a -> b) -> Mealy b c -> Mealy a c

rmap :: (b -> c) -> Mealy a b -> Mealy a c

(#.) :: forall a b c q. Coercible c b => q b c -> Mealy a b -> Mealy a c

(.#) :: forall a b c q. Coercible b a => Mealy b c -> q a b -> Mealy a c

Corepresentable Mealy

Defined in Data.Machine.Mealy

Associated Types

type Corep Mealy :: Type -> Type

Methods

cotabulate :: (Corep Mealy d -> c) -> Mealy d c

Choice Mealy

Defined in Data.Machine.Mealy

Methods

left' :: Mealy a b -> Mealy (Either a c) (Either b c)

right' :: Mealy a b -> Mealy (Either c a) (Either c b)

Closed Mealy

Defined in Data.Machine.Mealy

Methods

closed :: Mealy a b -> Mealy (x -> a) (x -> b)

Strong Mealy

Defined in Data.Machine.Mealy

Methods

first' :: Mealy a b -> Mealy (a, c) (b, c)

second' :: Mealy a b -> Mealy (c, a) (c, b)

Costrong Mealy

Defined in Data.Machine.Mealy

Methods

unfirst :: Mealy (a, d) (b, d) -> Mealy a b

unsecond :: Mealy (d, a) (d, b) -> Mealy a b

Automaton Mealy

Defined in Data.Machine.Mealy

Methods

auto :: Mealy a b -> Process a b

Cosieve Mealy NonEmpty

Defined in Data.Machine.Mealy

Methods

cosieve :: Mealy a b -> NonEmpty a -> b

Functor (Mealy a)

Defined in Data.Machine.Mealy

Methods

fmap :: (a0 -> b) -> Mealy a a0 -> Mealy a b

(<$) :: a0 -> Mealy a b -> Mealy a a0

Applicative (Mealy a)

Defined in Data.Machine.Mealy

Methods

pure :: a0 -> Mealy a a0

(<*>) :: Mealy a (a0 -> b) -> Mealy a a0 -> Mealy a b

liftA2 :: (a0 -> b -> c) -> Mealy a a0 -> Mealy a b -> Mealy a c

(*>) :: Mealy a a0 -> Mealy a b -> Mealy a b

(<*) :: Mealy a a0 -> Mealy a b -> Mealy a a0

Distributive (Mealy a)

Defined in Data.Machine.Mealy

Methods

distribute :: Functor f => f (Mealy a a0) -> Mealy a (f a0)

collect :: Functor f => (a0 -> Mealy a b) -> f a0 -> Mealy a (f b)

distributeM :: Monad m => m (Mealy a a0) -> Mealy a (m a0)

collectM :: Monad m => (a0 -> Mealy a b) -> m a0 -> Mealy a (m b)

Representable (Mealy a)

Defined in Data.Machine.Mealy

Associated Types

type Rep (Mealy a)

Methods

tabulate :: (Rep (Mealy a) -> a0) -> Mealy a a0

index :: Mealy a a0 -> Rep (Mealy a) -> a0

Pointed (Mealy a)

Defined in Data.Machine.Mealy

Methods

point :: a0 -> Mealy a a0

Extend (Mealy a)

Defined in Data.Machine.Mealy

Methods

duplicated :: Mealy a a0 -> Mealy a (Mealy a a0)

extended :: (Mealy a a0 -> b) -> Mealy a a0 -> Mealy a b

Category Mealy

Defined in Data.Machine.Mealy

Methods

id :: forall (a :: k). Mealy a a

(.) :: forall (b :: k) (c :: k) (a :: k). Mealy b c -> Mealy a b -> Mealy a c

Semigroup b => Semigroup (Mealy a b)

Defined in Data.Machine.Mealy

Methods

(<>) :: Mealy a b -> Mealy a b -> Mealy a b

sconcat :: NonEmpty (Mealy a b) -> Mealy a b

stimes :: Integral b0 => b0 -> Mealy a b -> Mealy a b

Monoid b => Monoid (Mealy a b)

Defined in Data.Machine.Mealy

Methods

mempty :: Mealy a b

mappend :: Mealy a b -> Mealy a b -> Mealy a b

mconcat :: [Mealy a b] -> Mealy a b

type Corep Mealy

Defined in Data.Machine.Mealy

type Corep Mealy = NonEmpty

type Rep (Mealy a)

Defined in Data.Machine.Mealy

type Rep (Mealy a) = NonEmpty a

unfoldMealy :: (s -> a -> (b, s)) -> s -> Mealy a b

A Mealy machine modeled with explicit state.

logMealy :: Semigroup a => Mealy a a

Accumulate history.