[GHC] #14199: Document Type.Reflection better (Fun and Con')

[GHC]

#14199: Document Type.Reflection better (Fun and Con')
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           Reporter:  dfeuer         |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  high           |         Milestone:  8.2.2
          Component:  Compiler       |           Version:  8.2.1
           Keywords:  Typeable       |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Documentation
  Unknown/Multiple                   |  bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 The pattern synonym `Type.Reflection.Fun` is not documented at all. Since
 it seems a bit subtle (`(->)` being more than just a type constructor), I
 think it actually deserves ''extra'' documentation, with examples.

 The pattern synonym `Type.Reflection.Con'` is insufficiently documented.
 Some examples would probably help.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14199>
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