| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Data.Functor.Free.Internal
Synopsis
- newtype Free c a = Free {
- runFree :: forall b. c b => (a -> b) -> b
- unit :: a -> Free c a
- rightAdjunct :: c b => (a -> b) -> Free c a -> b
- counit :: c a => Free c a -> a
- leftAdjunct :: (Free c a -> b) -> a -> b
- transform :: (forall r. c r => (b -> r) -> a -> r) -> Free c a -> Free c b
- newtype Extract a = Extract {
- getExtract :: a
- newtype Duplicate f a = Duplicate {
- getDuplicate :: f (f a)
- class Class f x => Class' f x where
- evaluate' :: AlgebraSignature f => f x -> x
- newtype LiftAFree c f a = LiftAFree {
- getLiftAFree :: f (Free c a)
- data ShowHelper a where
- ShowUnit :: a -> ShowHelper a
- ShowRec :: Show (f (ShowHelper a)) => f (ShowHelper a) -> ShowHelper a
- class a => b => a :=> b
- deriveInstances :: Name -> Q [Dec]
Documentation
The free functor for class c.
Free c a is basically an expression tree with operations from class c
and variables/placeholders of type a, created with unit.
Monadic bind allows you to replace each of these variables with another sub-expression.
Instances
| (forall x. c x => Class' f x) => Algebra f (Free c a) Source # | |
Defined in Data.Functor.Free.Internal | |
| Monad (Free c) Source # | |
| Functor (Free c) Source # | |
| Applicative (Free c) Source # | |
| (forall (f :: Type -> Type) x. Applicative f => c (LiftAFree c f x)) => Foldable (Free c) Source # | |
Defined in Data.Functor.Free.Internal Methods fold :: Monoid m => Free c m -> m # foldMap :: Monoid m => (a -> m) -> Free c a -> m # foldr :: (a -> b -> b) -> b -> Free c a -> b # foldr' :: (a -> b -> b) -> b -> Free c a -> b # foldl :: (b -> a -> b) -> b -> Free c a -> b # foldl' :: (b -> a -> b) -> b -> Free c a -> b # foldr1 :: (a -> a -> a) -> Free c a -> a # foldl1 :: (a -> a -> a) -> Free c a -> a # elem :: Eq a => a -> Free c a -> Bool # maximum :: Ord a => Free c a -> a # minimum :: Ord a => Free c a -> a # | |
| (forall (f :: Type -> Type) x. Applicative f => c (LiftAFree c f x)) => Traversable (Free c) Source # | |
| (forall x. c (Extract x), forall x. c (Duplicate (Free c) x)) => Comonad (Free c) Source # | |
| (forall x. c x :=> Floating x) => Floating (Free c a) Source # | |
Defined in Data.Functor.Free Methods sqrt :: Free c a -> Free c a # (**) :: Free c a -> Free c a -> Free c a # logBase :: Free c a -> Free c a -> Free c a # asin :: Free c a -> Free c a # acos :: Free c a -> Free c a # atan :: Free c a -> Free c a # sinh :: Free c a -> Free c a # cosh :: Free c a -> Free c a # tanh :: Free c a -> Free c a # asinh :: Free c a -> Free c a # acosh :: Free c a -> Free c a # atanh :: Free c a -> Free c a # log1p :: Free c a -> Free c a # expm1 :: Free c a -> Free c a # | |
| (forall x. c x :=> Fractional x) => Fractional (Free c a) Source # | |
| (forall x. c x :=> Num x) => Num (Free c a) Source # | |
| (Show a, Show (Signature c (ShowHelper a)), c (ShowHelper a)) => Show (Free c a) Source # | |
| (forall x. c x :=> Semigroup x) => Semigroup (Free c a) Source # | |
| (forall x. c x :=> Monoid x) => Monoid (Free c a) Source # | |
rightAdjunct :: c b => (a -> b) -> Free c a -> b Source #
rightAdjunct is the destructor of values.Free c
leftAdjunct :: (Free c a -> b) -> a -> b Source #
leftAdjunct f = f . unit
transform :: (forall r. c r => (b -> r) -> a -> r) -> Free c a -> Free c b Source #
transform f as = as >>= f unit
transform f . transform g = transform (g . f)
Constructors
| Extract | |
Fields
| |
newtype Duplicate f a Source #
Constructors
| Duplicate | |
Fields
| |
class Class f x => Class' f x where Source #
Methods
evaluate' :: AlgebraSignature f => f x -> x Source #
newtype LiftAFree c f a Source #
Constructors
| LiftAFree | |
Fields
| |
Instances
data ShowHelper a where Source #
Constructors
| ShowUnit :: a -> ShowHelper a | |
| ShowRec :: Show (f (ShowHelper a)) => f (ShowHelper a) -> ShowHelper a |
Instances
class a => b => a :=> b Source #
Instances
| a -> b => a :=> b Source # | |
Defined in Data.Functor.Free.Internal | |
deriveInstances :: Name -> Q [Dec] Source #
Derive the instances of for the class Free c ac, Show, Foldable and Traversable.
For example:
deriveInstances ''Num