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Within LTS Haskell 24.28 (ghc-9.10.3)

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  1. mapAccumL :: (acc -> x -> (acc, y)) -> acc -> [x] -> (acc, [y])

    prelude-compat Data.List2010

    No documentation available.

  2. mapAccumR :: (acc -> x -> (acc, y)) -> acc -> [x] -> (acc, [y])

    prelude-compat Data.List2010

    No documentation available.

  3. mapM :: (Traversable t, Monad m) => (a -> m b) -> t a -> m (t b)

    prelude-compat Prelude2010

    Map each element of a structure to a monadic action, evaluate these actions from left to right, and collect the results. For a version that ignores the results see mapM_.

    Examples

    mapM is literally a traverse with a type signature restricted to Monad. Its implementation may be more efficient due to additional power of Monad.

  4. mapM_ :: (Foldable t, Monad m) => (a -> m b) -> t a -> m ()

    prelude-compat Prelude2010

    Map each element of a structure to a monadic action, evaluate these actions from left to right, and ignore the results. For a version that doesn't ignore the results see mapM. mapM_ is just like traverse_, but specialised to monadic actions.

  5. mapLeft :: Bifunctor p => (a -> b) -> p a c -> p b c

    rebase Rebase.Data.Bifunctor

    A more meaningful and conflict-free alias for first.

  6. mapRight :: Bifunctor p => (b -> c) -> p a b -> p a c

    rebase Rebase.Data.Bifunctor

    A more meaningful and conflict-free alias for second.

  7. mapM :: Monad m => (a -> m b) -> Vector a -> m (Vector b)

    rebase Rebase.Data.Vector

    No documentation available.

  8. mapM_ :: Monad m => (a -> m b) -> Vector a -> m ()

    rebase Rebase.Data.Vector

    No documentation available.

  9. mapMaybe :: (a -> Maybe b) -> Vector a -> Vector b

    rebase Rebase.Data.Vector

    No documentation available.

  10. mapMaybeM :: Monad m => (a -> m (Maybe b)) -> Vector a -> m (Vector b)

    rebase Rebase.Data.Vector

    No documentation available.

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