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  1. (<$>?) :: BEncode a => (Maybe a -> b) -> BKey -> Get b

    bencoding Data.BEncode

    Shorthand for: f <$> optional (field (req k)).

  2. (~$$~) :: b -> a -> (a -> b -> r) -> r

    between Data.Function.Between.Lazy

    Infix version of common pattern:

    \f -> a `f` b     -- Notice the order of 'a' and 'b'.
    
    Since version 0.11.0.0.

  3. (~$~) :: a -> b -> (a -> b -> r) -> r

    between Data.Function.Between.Lazy

    Infix version of common pattern:

    \f -> a `f` b
    
    Where a and b are fixed parameters. There is also prefix version named inbetween. Since version 0.11.0.0.

  4. (~$$~) :: b -> a -> (a -> b -> r) -> r

    between Data.Function.Between.Strict

    Infix version of common pattern:

    \f -> (f $! a) $! b   -- Notice the order of 'a' and 'b'.
    
    Since version 0.11.0.0.

  5. (~$~) :: a -> b -> (a -> b -> r) -> r

    between Data.Function.Between.Strict

    Infix version of common pattern:

    \f -> (f $! a) $! b
    
    Where a and b are fixed parameters. There is also prefix version named inbetween. Since version 0.11.0.0.

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

    classy-prelude-yesod ClassyPrelude.Yesod

    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

    classy-prelude-yesod ClassyPrelude.Yesod

    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. (=$) :: forall (m :: Type -> Type) a b c r . Monad m => Conduit a m b -> ConduitT b c m r -> ConduitT a c m r

    classy-prelude-yesod ClassyPrelude.Yesod

    A synonym for =$= for backwards compatibility. Since 0.4.0

  9. (=$$+) :: forall (m :: Type -> Type) a b r . Monad m => ConduitT a b m () -> ConduitT b Void m r -> ConduitT a Void m (SealedConduitT a b m (), r)

    classy-prelude-yesod ClassyPrelude.Yesod

    The connect-and-resume operator. This does not close the Conduit, but instead returns it to be used again. This allows a Conduit to be used incrementally in a large program, without forcing the entire program to live in the Sink monad. Leftover data returned from the Sink will be discarded. Mnemonic: connect + do more. Since 1.0.17

  10. (=$$++) :: forall (m :: Type -> Type) i o r . Monad m => SealedConduitT i o m () -> ConduitT o Void m r -> ConduitT i Void m (SealedConduitT i o m (), r)

    classy-prelude-yesod ClassyPrelude.Yesod

    Continue processing after usage of =$$+. Connect a SealedConduitT to a sink and return the output of the sink together with a new SealedConduitT. Since 1.0.17

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