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Within LTS Haskell 22.19 (ghc-9.6.4)

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  1. newtype () => Endo a

    base-compat-batteries Data.Monoid.Compat

    The monoid of endomorphisms under composition.

    >>> let computation = Endo ("Hello, " ++) <> Endo (++ "!")
    
    >>> appEndo computation "Haskell"
    "Hello, Haskell!"
    

  2. Endo :: (a -> a) -> Endo a

    base-compat-batteries Data.Monoid.Compat

    No documentation available.

  3. newtype () => Endo a

    base-compat-batteries Data.Semigroup.Compat

    The monoid of endomorphisms under composition.

    >>> let computation = Endo ("Hello, " ++) <> Endo (++ "!")
    
    >>> appEndo computation "Haskell"
    "Hello, Haskell!"
    

  4. Endo :: (a -> a) -> Endo a

    base-compat-batteries Data.Semigroup.Compat

    No documentation available.

  5. newtype () => Endo a

    relude Relude.Monoid

    The monoid of endomorphisms under composition.

    >>> let computation = Endo ("Hello, " ++) <> Endo (++ "!")
    
    >>> appEndo computation "Haskell"
    "Hello, Haskell!"
    

  6. Endo :: (a -> a) -> Endo a

    relude Relude.Monoid

    No documentation available.

  7. newtype Endo a

    first-class-families Fcf.Class.Monoid.Types

    Endofunctions.

    Details

    This is is used in the default implementation of Foldr in terms of FoldMap.

  8. Endo :: (a -> Exp a) -> Endo a

    first-class-families Fcf.Class.Monoid.Types

    No documentation available.

  9. newtype () => Endo a

    ghc-lib-parser GHC.Core.TyCo.FVs

    The monoid of endomorphisms under composition.

    >>> let computation = Endo ("Hello, " ++) <> Endo (++ "!")
    
    >>> appEndo computation "Haskell"
    "Hello, Haskell!"
    

  10. Endo :: (a -> a) -> Endo a

    ghc-lib-parser GHC.Core.TyCo.FVs

    No documentation available.

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