id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
2392,Make Applicative a superclass of Monad,Ashley Yakeley,,"Make Applicative (in Control.Applicative) a superclass of Monad (in Control.Monad). Rename members of Applicative and other functions, to avoid unnecessary duplication.
{{{
class Functor f => Applicative f where
  return :: a -> f a
  ap :: f (a -> b) -> f a -> f b

liftA2 :: Applicative f => (a -> b -> c) -> f a -> f b -> f c
liftA2 f a b = ap (fmap f a) b

(>>) :: (Applicative f) => f a -> f b -> f b
(>>) = liftA2 (const id)

-- etc.
}}}
{{{
class Applicative m => Monad m where
  (>>=) :: forall a b . m a -> (a -> m b) -> m b
  fail :: String -> m a
  fail s = error s
}}}",proposal,closed,normal,,libraries/base,6.8.3,wontfix,,,Unknown/Multiple,Unknown/Multiple,,Unknown,,,,