:: Monad m => (m (m a)) -> m a -package:numhask package:composition-prelude

(.$) :: Monad m => m (m a) -> m a
composition-prelude Control.Composition
Infix version of join As an example, one could use this to rewrite 
between (char '"') (char '"')
to 
between .$ (char '"')
Or 
fromEither :: Either a a -> a
fromEither = either id id
to 
fromEither :: Either a a -> a
fromEither = either .$ id