[GHC] #8778: Typeable TypeNats
GHC
ghc-devs at haskell.org
Thu Feb 13 08:14:00 UTC 2014
#8778: Typeable TypeNats
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Reporter: dmcclean | Owner:
Type: feature request | Status: new
Priority: normal | Milestone: ⊥
Component: Compiler (Type checker) | Version: 7.8.1-rc1
Keywords: | Operating System:
Architecture: Unknown/Multiple | Unknown/Multiple
Difficulty: Unknown | Type of failure:
Blocked By: | None/Unknown
Related Tickets: 4385 | Test Case:
| Blocking:
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It would be useful (the case I have at hand is for some scenarios
involving checking of physical dimensions) to be able to combine the
Data.Dynamic story with the GHC.TypeLits story.
A Typeable instance for every Nat is the sticking point.
(I do not know if this is even theoretically possible.)
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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8778>
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