[GHC] #3298: Add swap to Data.Tuple

[GHC]

#3298: Add swap to Data.Tuple
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Reporter:  r6                |          Owner:                  
    Type:  proposal          |         Status:  new             
Priority:  normal            |      Component:  libraries/base  
 Version:  6.10.2            |       Severity:  normal          
Keywords:                    |       Testcase:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
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 I think swap is a widely accepted name for the function.  There is only
 the question of strictness.  I suggest swap for the lazy version and swap'
 for the strict version

 swap ~(a,b) = (b,a)

 swap' (a,b) = (b,a)

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3298>
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