[GHC] #1996: Make "swap" a top-level function

[GHC]

#1996: Make "swap" a top-level function
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 Reporter:  guest            |          Owner:         
     Type:  feature request  |         Status:  new    
 Priority:  normal           |      Milestone:         
Component:  Compiler         |        Version:  6.8.2  
 Severity:  normal           |     Resolution:         
 Keywords:                   |     Difficulty:  Unknown
 Testcase:                   |   Architecture:  Unknown
       Os:  Unknown          |  
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Comment (by guest):

 In the Control.Arrow module, in the definition for ''second'', there is a
 utility function defined: swap, which takes a pair, and returns a pair
 with the first and second members in opposite places. I would like to see
 that function broken out of the Control.Arrow module, and made a top-level
 function in the Data.Tuple module.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1996#comment:1>
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