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  1. (<$>) :: Functor f => (a -> b) -> f a -> f b

    classy-prelude ClassyPrelude

    An infix synonym for fmap. The name of this operator is an allusion to $. Note the similarities between their types: 

    ($)  ::              (a -> b) ->   a ->   b
(<$>) :: Functor f => (a -> b) -> f a -> f b
    Whereas $ is function application, <$> is function application lifted over a Functor.

    Examples

    Convert from a Maybe Int to a Maybe String using show: 
    >>> show <$> Nothing
Nothing

    >>> show <$> Just 3
Just "3"
    Convert from an Either Int Int to an Either Int String using show: 
    >>> show <$> Left 17
Left 17

    >>> show <$> Right 17
Right "17"
    Double each element of a list: 
    >>> (*2) <$> [1,2,3]
[2,4,6]
    Apply even to the second element of a pair: 
    >>> even <$> (2,2)
(2,True)

  2. (<$) :: Functor f => a -> f b -> f a

    ghc-lib-parser GHC.Prelude.Basic

    Replace all locations in the input with the same value. The default definition is fmap . const, but this may be overridden with a more efficient version.

    Examples

    Perform a computation with Maybe and replace the result with a constant value if it is Just: 
    >>> 'a' <$ Just 2
Just 'a'

>>> 'a' <$ Nothing
Nothing

  3. (<$>) :: Functor f => (a -> b) -> f a -> f b

    ghc-lib-parser GHC.Prelude.Basic

    An infix synonym for fmap. The name of this operator is an allusion to $. Note the similarities between their types: 

    ($)  ::              (a -> b) ->   a ->   b
(<$>) :: Functor f => (a -> b) -> f a -> f b
    Whereas $ is function application, <$> is function application lifted over a Functor.

    Examples

    Convert from a Maybe Int to a Maybe String using show: 
    >>> show <$> Nothing
Nothing

    >>> show <$> Just 3
Just "3"
    Convert from an Either Int Int to an Either Int String using show: 
    >>> show <$> Left 17
Left 17

    >>> show <$> Right 17
Right "17"
    Double each element of a list: 
    >>> (*2) <$> [1,2,3]
[2,4,6]
    Apply even to the second element of a pair: 
    >>> even <$> (2,2)
(2,True)

  4. (<$>) :: Functor f => (a -> b) -> f a -> f b

    ghc-lib-parser GHC.Utils.Monad

    An infix synonym for fmap. The name of this operator is an allusion to $. Note the similarities between their types: 

    ($)  ::              (a -> b) ->   a ->   b
(<$>) :: Functor f => (a -> b) -> f a -> f b
    Whereas $ is function application, <$> is function application lifted over a Functor.

    Examples

    Convert from a Maybe Int to a Maybe String using show: 
    >>> show <$> Nothing
Nothing

    >>> show <$> Just 3
Just "3"
    Convert from an Either Int Int to an Either Int String using show: 
    >>> show <$> Left 17
Left 17

    >>> show <$> Right 17
Right "17"
    Double each element of a list: 
    >>> (*2) <$> [1,2,3]
[2,4,6]
    Apply even to the second element of a pair: 
    >>> even <$> (2,2)
(2,True)

  5. (<$$>) :: StaticPtr (a -> b) -> Trusted a -> Trusted b

    hackage-security Hackage.Security.Trusted

    Apply a static function to a trusted argument

  6. (|$|) :: (ProductIsoFunctor f, ProductConstructor (a -> b)) => (a -> b) -> f a -> f b

    product-isomorphic Data.Functor.ProductIsomorphic.Class

    No documentation available.

  7. (<$%>) :: Functor (Flip t c) => (a -> b) -> t a c -> t b c

    type-flip Data.Type.Flip

    No documentation available.

  8. type (f :: Type -> Type) :$: (ts :: Set Type) = 'SetApp f Map f ts

    type-set Data.Type.SetApp

    No documentation available.

  9. (<$$>) :: Doc -> Doc -> Doc

    wl-pprint-text Text.PrettyPrint.Leijen.Text

    The document (x <$$> y) concatenates document x and y with a linebreak in between. (infixr 5)

  10. (<$>) :: Doc -> Doc -> Doc

    wl-pprint-text Text.PrettyPrint.Leijen.Text

    The document (x <$> y) concatenates document x and y with a line in between. (infixr 5)

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