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Within LTS Haskell 24.49 (ghc-9.10.3)

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

    base-compat-batteries Control.Monad.Compat

    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.

  2. mapMaybe :: (a -> Maybe b) -> Infinite a -> Infinite b

    infinite-list Data.List.Infinite

    Apply a function to every element of an infinite list and collect Just results. This function isn't productive (e. g., head . mapMaybe f won't terminate), if no elements of the input list result in Just.

  3. mapMonotonic :: (a -> c) -> Bimap a b -> Bimap c b

    bimap Data.Bimap

    O(n). Map a strictly increasing function over all left keys in the map. The precondition is not checked. Version 0.3

  4. mapMonotonicR :: (b -> c) -> Bimap a b -> Bimap a c

    bimap Data.Bimap

    O(n). Map a strictly increasing function over all right keys in the map. The precondition is not checked. Version 0.3

  5. mapMaybe :: (a -> Maybe b) -> EnumMap k a -> EnumMap k b

    enummapset Data.EnumMap.Lazy

    No documentation available.

  6. mapMaybeWithKey :: Enum k => (k -> a -> Maybe b) -> EnumMap k a -> EnumMap k b

    enummapset Data.EnumMap.Lazy

    No documentation available.

  7. mapMaybe :: (a -> Maybe b) -> EnumMap k a -> EnumMap k b

    enummapset Data.EnumMap.Strict

    No documentation available.

  8. mapMaybeWithKey :: Enum k => (k -> a -> Maybe b) -> EnumMap k a -> EnumMap k b

    enummapset Data.EnumMap.Strict

    No documentation available.

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

    ghc-internal GHC.Internal.Control.Monad

    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.

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

    ghc-internal GHC.Internal.Data.Foldable

    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.

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