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Within LTS Haskell 24.6 (ghc-9.10.2)

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  1. (<$>) :: Doc a -> Doc a -> Doc a

    annotated-wl-pprint Text.PrettyPrint.Annotated.Leijen

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

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

    appar Text.Appar.ByteString

    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

    appar Text.Appar.ByteString

    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 -> f b -> f a

    appar Text.Appar.LazyByteString

    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

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

    appar Text.Appar.LazyByteString

    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)

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

    appar Text.Appar.String

    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

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

    appar Text.Appar.String

    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)

  8. (->$) :: IsPgJSON json => QGenExpr ctxt Postgres s (json a) -> QGenExpr ctxt Postgres s Text -> QGenExpr ctxt Postgres s (json b)

    beam-postgres Database.Beam.Postgres

    Acces a JSON object by key. Corresponds to the Postgres -> operator. See (->#) for the corresponding operator for arrays.

  9. (->>$) :: IsPgJSON json => QGenExpr ctxt Postgres s (json a) -> QGenExpr ctxt Postgres s Text -> QGenExpr ctxt Postgres s Text

    beam-postgres Database.Beam.Postgres

    Access a JSON object by key, returning the embedded object as a string. Corresponds to the Postgres ->> operator. See (->>#) for the corresponding operator on arrays.

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

    breakpoint Debug.Breakpoint.GhcFacade

    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)

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