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  1. makeBimap :: Name -> Q Exp

    bifunctors Data.Bifunctor.TH

    Generates a lambda expression which behaves like bimap (without requiring a Bifunctor instance).

  2. makeBimapM :: Name -> Q Exp

    bifunctors Data.Bifunctor.TH

    Generates a lambda expression which behaves like bimapM (without requiring a Bitraversable instance).

  3. makeBimapMOptions :: Options -> Name -> Q Exp

    bifunctors Data.Bifunctor.TH

    Like makeBimapM, but takes an Options argument.

  4. makeBimapOptions :: Options -> Name -> Q Exp

    bifunctors Data.Bifunctor.TH

    Like makeBimap, but takes an Options argument.

  5. type family HeaderValMap (f :: Type -> Type) (xs :: [Type]) :: [Type]

    servant Servant.API.ResponseHeaders

    No documentation available.

  6. foldMapUnion :: forall c a (as :: [Type]) . All c as => Proxy c -> (forall x . c x => x -> a) -> Union as -> a

    servant Servant.API.UVerb.Union

    Convenience function to apply a function to an unknown union element using a type class. All elements of the union must have instances in the type class, and the function is applied unconditionally. See also: matchUnion.

  7. fmap :: Functor f => (a -> b) -> f a -> f b

    comonad Control.Comonad

    fmap is used to apply a function of type (a -> b) to a value of type f a, where f is a functor, to produce a value of type f b. Note that for any type constructor with more than one parameter (e.g., Either), only the last type parameter can be modified with fmap (e.g., b in `Either a b`). Some type constructors with two parameters or more have a Bifunctor instance that allows both the last and the penultimate parameters to be mapped over.

    Examples

    Convert from a Maybe Int to a Maybe String using show:
    >>> fmap show Nothing
    Nothing
    
    >>> fmap show (Just 3)
    Just "3"
    
    Convert from an Either Int Int to an Either Int String using show:
    >>> fmap show (Left 17)
    Left 17
    
    >>> fmap show (Right 17)
    Right "17"
    
    Double each element of a list:
    >>> fmap (*2) [1,2,3]
    [2,4,6]
    
    Apply even to the second element of a pair:
    >>> fmap even (2,2)
    (2,True)
    
    It may seem surprising that the function is only applied to the last element of the tuple compared to the list example above which applies it to every element in the list. To understand, remember that tuples are type constructors with multiple type parameters: a tuple of 3 elements (a,b,c) can also be written (,,) a b c and its Functor instance is defined for Functor ((,,) a b) (i.e., only the third parameter is free to be mapped over with fmap). It explains why fmap can be used with tuples containing values of different types as in the following example:
    >>> fmap even ("hello", 1.0, 4)
    ("hello",1.0,True)
    

  8. maybeNamedMapping :: Maybe Text -> [(Text, YamlBuilder)] -> YamlBuilder

    yaml Data.Yaml.Builder

    No documentation available.

  9. maybeNamedMappingComplex :: Maybe Text -> [(YamlBuilder, YamlBuilder)] -> YamlBuilder

    yaml Data.Yaml.Builder

    No documentation available.

  10. namedMapping :: Text -> [(Text, YamlBuilder)] -> YamlBuilder

    yaml Data.Yaml.Builder

    No documentation available.

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