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Within LTS Haskell 24.6 (ghc-9.10.2)

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  1. imapMaybe :: (Storable a, Storable b) => (Int -> a -> Maybe b) -> Vector a -> Vector b

    rebase Rebase.Data.Vector.Storable

    No documentation available.

  2. imapMaybeM :: (Monad m, Storable a, Storable b) => (Int -> a -> m (Maybe b)) -> Vector a -> m (Vector b)

    rebase Rebase.Data.Vector.Storable

    No documentation available.

  3. imapMaybe :: (Unbox a, Unbox b) => (Int -> a -> Maybe b) -> Vector a -> Vector b

    rebase Rebase.Data.Vector.Unboxed

    No documentation available.

  4. imapMaybeM :: (Monad m, Unbox a, Unbox b) => (Int -> a -> m (Maybe b)) -> Vector a -> m (Vector b)

    rebase Rebase.Data.Vector.Unboxed

    No documentation available.

  5. imapMaybe :: (Int -> a -> Maybe b) -> NonEmptyVector a -> Vector b

    nonempty-vector Data.Vector.NonEmpty

    O(n) Drop elements when predicate, applied to index and value, returns Nothing If no elements satisfy the predicate, the resulting vector may be empty.

    >>> imapMaybe (\i a -> if a == 2 || i == 2 then Nothing else Just a) (unsafeFromList [1..3])
    [1]
    

  6. setMapMaybe :: Ord b => (a -> Maybe b) -> Set a -> Set b

    cabal-debian Debian.Debianize.Prelude

    No documentation available.

  7. contramapMaybe :: (Profunctor p, Semigroupal (->) Either Either Either p) => (a -> Maybe b) -> p b x -> p a x

    monoidal-functors Data.Bifunctor.Monoidal.Specialized

    No documentation available.

  8. checkMapMaybe :: HasCallStack => (a -> Maybe b) -> Parser a -> Parser b

    opt-env-conf OptEnvConf

    Like checkMapEither but without a helpful error message. Prefer checkMapEither.

  9. checkMapMaybe :: HasCallStack => (a -> Maybe b) -> Parser a -> Parser b

    opt-env-conf OptEnvConf

    Like checkMapEither but without a helpful error message. Prefer checkMapEither.

  10. checkMapMaybeForgivable :: HasCallStack => (a -> Maybe b) -> Parser a -> Parser b

    opt-env-conf OptEnvConf

    Like checkMapMaybe, but allow trying the other side of any alternative if the result is Nothing.

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