[GHC] #3377: [Patch] Support Python-style tuple sections

GHC trac at galois.com
Sun Jul 19 10:45:30 EDT 2009


#3377: [Patch] Support Python-style tuple sections
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    Reporter:  batterseapower    |        Owner:                  
        Type:  feature request   |       Status:  new             
    Priority:  normal            |    Milestone:                  
   Component:  Compiler          |      Version:  6.10.4          
    Severity:  normal            |   Resolution:                  
    Keywords:                    |   Difficulty:  Unknown         
    Testcase:                    |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |  
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Comment (by batterseapower):

 I proposed list sections to Neil in an email, and I reproduce his reply
 here:

 {{{
 I tried to think of why the list section wouldn't be useful. The
 reason I decided is that for lists we have the singleton list (we lack
 the singleton tuple) and list concatenation (there is no tuple concat,
 but it could be added). Using these you can often encode list
 sections:

 map (:1)

 So I think thats the reason no one needs list sections.

 Thanks

 Neil
 }}}

 Seems reasonable to me!

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3377#comment:3>
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