[GHC] #880: someFunction :: TypeRep -> Int

#880: someFunction :: TypeRep -> Int
--------------------------------+-------------------------------------------
    Reporter:  guest            |        Owner:             
        Type:  feature request  |       Status:  new        
    Priority:  normal           |    Milestone:             
   Component:  libraries/base   |      Version:  6.4.2      
    Severity:  normal           |     Keywords:             
          Os:  Unknown          |   Difficulty:  Easy (1 hr)
Architecture:  Unknown          |  
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Now that TypeRep share their keys using RTS internal allocation, can we
 get a function in Data.Typeable (or even GHC.Exts) that retrieves the Int
 key?  Currently my job code (OpenAFP) and Pugs both uses "show :: TypeRep
 -> String" as the key for Map, but I think it'd be much, much faster if
 either TypeRep supports Ord natively, or (preferably) that we can get a
 Int out of it.

 Thanks!
 Audrey

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/880>
GHC <http://www.haskell.org/ghc/>
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