[GHC] #5296: Add explicit type applications

[GHC]

#5296: Add explicit type applications
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        Reporter:  dsf               |                   Owner:  goldfire
            Type:  feature request   |                  Status:  new
        Priority:  low               |               Milestone:  7.12.1
       Component:  Compiler (Type    |                 Version:  7.0.3
  checker)                           |
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |               Test Case:
      Blocked By:  1897              |                Blocking:
 Related Tickets:                    |  Differential Revisions:  Phab:D1138
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Comment (by simonpj):

 Can I tell, in GHCi, whether a particular function (perhaps in scope by
 being imported) is amenably to VTA?  Perhaps `:info f` tells me?

 For (2) I suggest just saying `(3 :: Int)`.  There are more exciting
 things to do than allow "@" in place of "::".

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5296#comment:18>
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