Hoogle Search

Within LTS Haskell 24.31 (ghc-9.10.3)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

  1. (<$) :: (Functor f, Foldable f, Num b, Num (f a), Reifies s W) => BVar s b -> BVar s (f a) -> BVar s (f b)

    backprop Prelude.Backprop.Num

    Alias for fmapConst.

  2. (<$>) :: (Traversable f, Num a, Num b, Reifies s W) => (BVar s a -> BVar s b) -> BVar s (f a) -> BVar s (f b)

    backprop Prelude.Backprop.Num

    Alias for fmap.

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

    cabal-install-solver Distribution.Solver.Compat.Prelude

    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
    

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

    cabal-install-solver Distribution.Solver.Compat.Prelude

    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. type (k1 :: t1) :$$$: (k2 :: t2) = ToEM k1 ':$$: ToEM k2

    clash-prelude Clash.Class.HasDomain.Common

    No documentation available.

  6. (:$$:) :: ErrorMessage -> ErrorMessage -> ErrorMessage

    clash-prelude Clash.Explicit.Prelude

    Stack two pieces of error message on top of each other.

  7. (:$$:) :: ErrorMessage -> ErrorMessage -> ErrorMessage

    clash-prelude Clash.Explicit.Prelude.Safe

    Stack two pieces of error message on top of each other.

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

    clash-prelude Clash.HaskellPrelude

    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
    

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

    clash-prelude Clash.HaskellPrelude

    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)
    

  10. (:$$:) :: ErrorMessage -> ErrorMessage -> ErrorMessage

    clash-prelude Clash.Prelude

    Stack two pieces of error message on top of each other.

Page 65 of many | Previous | Next