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

    opt-env-conf OptEnvConf

    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

    opt-env-conf OptEnvConf.Parser

    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. (<$>) :: IsoFunctor f => Iso alpha beta -> f alpha -> f beta

    partial-isomorphisms Control.Isomorphism.Partial.Prim

    No documentation available.

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

    prettyprinter-compat-ansi-wl-pprint Text.PrettyPrint.ANSI.Leijen

    No documentation available.

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

    prettyprinter-compat-ansi-wl-pprint Text.PrettyPrint.ANSI.Leijen

    No documentation available.

  6. (.:$) :: SafeJSON a => Object -> Key -> Parser a

    safe-json Data.SafeJSON

    Similar to .:, but uses safeFromJSON instead of parseJSON to parse the value in the given field.

  7. (.:$!) :: SafeJSON a => Object -> Key -> Parser (Maybe a)

    safe-json Data.SafeJSON

    Similar to .:!, but uses safeFromJSON instead of parseJSON to maybe parse the value in the given field.

  8. (.:$?) :: SafeJSON a => Object -> Key -> Parser (Maybe a)

    safe-json Data.SafeJSON

    Similar to .:?, but uses safeFromJSON instead of parseJSON to maybe parse the value in the given field.

  9. (.=$) :: (SafeJSON a, KeyValue e kv) => Key -> a -> kv

    safe-json Data.SafeJSON

    Similarly to .=, but uses safeToJSON instead of toJSON to convert the value in that key-value pair.

  10. (<<$>>) :: (a -> IO b) -> Maybe a -> IO (Maybe b)

    status-notifier-item StatusNotifier.Util

    No documentation available.

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