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Within LTS Haskell 24.49 (ghc-9.10.3)
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forM_ :: (Foldable t, Monad m) => t a -> (a -> m b) -> m ()ghc-internal GHC.Internal.Data.Foldable forM_ is mapM_ with its arguments flipped. For a version that doesn't ignore the results see forM. forM_ is just like for_, but specialised to monadic actions.
for_ :: (Foldable t, Applicative f) => t a -> (a -> f b) -> f ()ghc-internal GHC.Internal.Data.Foldable for_ is traverse_ with its arguments flipped. For a version that doesn't ignore the results see for. This is forM_ generalised to Applicative actions. for_ is just like forM_, but generalised to Applicative actions.
Examples
Basic usage:>>> for_ [1..4] print 1 2 3 4
forAccumM :: (Monad m, Traversable t) => s -> t a -> (s -> a -> m (s, b)) -> m (s, t b)ghc-internal GHC.Internal.Data.Traversable forM :: (Traversable t, Monad m) => t a -> (a -> m b) -> m (t b)ghc-internal GHC.Internal.Data.Traversable forM is mapM with its arguments flipped. For a version that ignores the results see forM_.
formatRealFloat :: RealFloat a => FFFormat -> Maybe Int -> a -> Stringghc-internal GHC.Internal.Float No documentation available.
formatRealFloatAlt :: RealFloat a => FFFormat -> Maybe Int -> Bool -> a -> Stringghc-internal GHC.Internal.Float No documentation available.
forConcurrently :: (Traversable t, MonadBaseControl IO m) => t a -> (a -> m b) -> m (t b)lifted-async Control.Concurrent.Async.Lifted Generalized version of forConcurrently.
forConcurrently_ :: (Foldable t, MonadBaseControl IO m) => t a -> (a -> m b) -> m ()lifted-async Control.Concurrent.Async.Lifted Generalized version of forConcurrently_.
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lifted-async Control.Concurrent.Async.Lifted.Safe Generalized version of forConcurrently.
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lifted-async Control.Concurrent.Async.Lifted.Safe Generalized version of forConcurrently_.