[GHC] #13865: Add to Data.Proxy a utility function proxy :: a -> Proxy a

[GHC]

#13865: Add to Data.Proxy a utility function proxy :: a -> Proxy a
-------------------------------------+-------------------------------------
        Reporter:  louispan          |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       Component:  libraries/base    |              Version:  8.0.1
      Resolution:                    |             Keywords:  Proxy
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Description changed by louispan:

@@ -6,0 +6,1 @@
+ {{{#!haskell
@@ -8,0 +9,1 @@
+ }}}

New description:

 I sometime find myself wanting to create a Proxy of a certain type (to
 pass into functions that use Proxy), but I only have easy access to the
 value, but not the type (eg. because the type is being inferred).
 That is, I find myself defining the following function

 {{{#!haskell
 proxy :: a -> Proxy a
 proxy _ = Proxy
 }}}

 It would be great if something like that could be added to Data.Proxy

--

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13865#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler