[GHC] #10963: Beginner-targeted language extension

[GHC]

#10963: Beginner-targeted language extension
-------------------------------------+-------------------------------------
        Reporter:  kanetw            |                Owner:
            Type:  feature request   |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2136
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by takenobu):

 Hi,

 Is Alexander Kjeldaas's representation idea useful? [1]

 [1] https://mail.haskell.org/pipermail/ghc-devs/2016-February/011398.html


 {{{
 Prelude> :t foldr
 foldr :: Foldable t => (a -> b -> b) -> b -> t a -> b
 For example:
 foldr :: (a -> b -> b) -> b -> [a] -> b
 foldr :: (a -> b -> b) -> b -> Maybe a -> b
 foldr :: (a -> b -> b) -> b -> Identity a -> b
 foldr :: (a -> b -> b) -> b -> (c, a) -> b
 and more
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10963#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler