Safe Haskell | Safe |
---|---|
Language | Haskell2010 |
- ap :: Applicative f => f (a -> b) -> f a -> f b
- lift2 :: Applicative f => (a -> b -> c) -> f a -> f b -> f c
- lift3 :: Applicative f => (a -> b -> c -> d) -> f a -> f b -> f c -> f d
- (<*) :: Applicative f => f (a -> b) -> f a -> f b
- (*>) :: Applicative f => f a -> f (a -> b) -> f b
- (<$*) :: Applicative f => (a -> b -> c) -> f a -> f b -> f c
- (*$>) :: Applicative f => f a -> (a -> b -> c) -> f b -> f c
- (<$**) :: Applicative f => (a -> b -> c -> d) -> f a -> f b -> f c -> f d
- (**$>) :: Applicative f => f a -> (a -> b -> c -> d) -> f b -> f c -> f d
Documentation
ap :: Applicative f => f (a -> b) -> f a -> f b Source #
A simple alias for <*>
>>>
ap (Just (+1)) (Just 4)
Just 5
lift2 :: Applicative f => (a -> b -> c) -> f a -> f b -> f c Source #
An alias for lift2
, updating with unified "lift" naming
>>>
lift2 (+) (Just 4) (Just 1)
Just 5
lift3 :: Applicative f => (a -> b -> c -> d) -> f a -> f b -> f c -> f d Source #
An alias for lift3
, updating with unified "lift" naming
>>>
lift3 (\x y z -> x * y * z) (Just 4) (Just 3) (Just 2)
Just 24
(<*) :: Applicative f => f (a -> b) -> f a -> f b infixr 4 Source #
Right-associative, left-flowing applicative operator
>>>
Just (+1) <* Just 4
Just 5
(*>) :: Applicative f => f a -> f (a -> b) -> f b infixl 4 Source #
Left-associative, right-flowing applicative operator
>>>
Just 4 *> Just (+1)
Just 5
(<$*) :: Applicative f => (a -> b -> c) -> f a -> f b -> f c infixr 4 Source #
Right-associative, left-flowing lift2
operator
>>>
(+) <$* Just 4 |< Just 1
Just 5
(*$>) :: Applicative f => f a -> (a -> b -> c) -> f b -> f c infixl 4 Source #
Left-associative, right-flowing lift2
operator
>>>
Just 4 >| Just 1 *$> (+)
Just 5
(<$**) :: Applicative f => (a -> b -> c -> d) -> f a -> f b -> f c -> f d infixr 4 Source #
Right-associative, left-flowing lift3
operator
>>>
(\x y z -> x * y * z) <$** Just 4 |< Just 3 |< Just 2
Just 24
(**$>) :: Applicative f => f a -> (a -> b -> c -> d) -> f b -> f c -> f d infixl 4 Source #
Left-associative, right-flowing lift3
operator
>>>
Just 2 >| Just 3 >| Just 4 **$> \x y z -> x * y * z
Just 24