[GHC] #4359: Implement lambda-case/lambda-if

[GHC]

#4359: Implement lambda-case/lambda-if
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    Reporter:  batterseapower    |        Owner:              
        Type:  feature request   |       Status:  new         
    Priority:  high              |    Milestone:  7.2.1       
   Component:  Compiler          |      Version:  7.1         
    Keywords:                    |     Testcase:              
   Blockedby:                    |   Difficulty:              
          Os:  Unknown/Multiple  |     Blocking:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
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Comment(by simonmar):

 Frankly there's already been a great deal of feedback - this particular
 design was actually discussed in the most recent haskell-cafe thread and
 got a fair few +1s.  I think it's now time to put it in and see how well
 it works in practice.

 Remember, no code will actually break unless you explicitly ask to turn on
 the extension.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4359#comment:39>
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