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Within LTS Haskell 24.34 (ghc-9.10.3)

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1. forkL :: (HasTrie (Basis a), HasBasis c, HasBasis d) => (a :-* c) -> (a :-* d) -> a :-* (c, d)

   vector-space	Data.LinearMap

   No documentation available.

2. forConnection :: T -> Data -> T

   alsa-seq	Sound.ALSA.Sequencer.Event

   No documentation available.

3. forSourcePort :: T -> Data -> T

   alsa-seq	Sound.ALSA.Sequencer.Event

   No documentation available.

4. forM :: (Traversable t, Monad m) => t a -> (a -> m b) -> m (t b)

   basic-prelude	BasicPrelude

   forM is mapM with its arguments flipped. For a version that ignores the results see forM_.

5. forM_ :: (Foldable t, Monad m) => t a -> (a -> m b) -> m ()

   basic-prelude	BasicPrelude

   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.

6. for_ :: (Foldable t, Applicative f) => t a -> (a -> f b) -> f ()

   basic-prelude	BasicPrelude

   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
   

7. forever :: Applicative f => f a -> f b

   basic-prelude	BasicPrelude

   Repeat an action indefinitely.

   Examples

   A common use of forever is to process input from network sockets, Handles, and channels (e.g. MVar and Chan). For example, here is how we might implement an echo server, using forever both to listen for client connections on a network socket and to echo client input on client connection handles:

   echoServer :: Socket -> IO ()
   echoServer socket = forever $ do
   client <- accept socket
   forkFinally (echo client) (\_ -> hClose client)
   where
   echo :: Handle -> IO ()
   echo client = forever $
   hGetLine client >>= hPutStrLn client
   

   Note that "forever" isn't necessarily non-terminating. If the action is in a MonadPlus and short-circuits after some number of iterations. then forever actually returns mzero, effectively short-circuiting its caller.

8. forceAttrMap :: Attr -> AttrMap

   brick	Brick.AttrMap

   Create an attribute map in which all lookups map to the same attribute. This is functionally equivalent to attrMap attr [].

9. forceAttrMapAllowStyle :: Attr -> AttrMap -> AttrMap

   brick	Brick.AttrMap

   Create an attribute map in which all lookups map to the same attribute. This is functionally equivalent to attrMap attr [].

10. formAttr :: AttrName

    brick	Brick.Forms

    The namespace for the other form attributes.

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