Re: [GHC] #7492: Generic1 deriving: Can we replace Rec1 f with f :.: Par1?
#7492: Generic1 deriving: Can we replace Rec1 f with f :.: Par1? -+-- Reporter: spl | Owner: dreixel Type: feature request | Status: new Priority: normal| Milestone: Component: Compiler | Version: 7.7 Keywords:| Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown |Testcase: Blockedby:|Blocking: Related:| -+-- Changes (by simonpj): * difficulty: = Unknown * owner: = dreixel -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7492#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler ___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #7492: Generic1 deriving: Can we replace Rec1 f with f :.: Par1?
#7492: Generic1 deriving: Can we replace Rec1 f with f :.: Par1? -+-- Reporter: spl | Owner: dreixel Type: feature request | Status: new Priority: normal| Milestone: Component: Compiler | Version: 7.7 Keywords:| Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown |Testcase: Blockedby:|Blocking: Related:| -+-- Comment(by dreixel): You raise an interesting point, thanks. I think replacing `Rec1 f` with `f :.: Par1` would be possible. But I'm not too keen on making a change to the representation right now, as I think there might be more fundamental changes coming up anyway (e.g. making use of `DataKinds`). But I'm leaving this open so that we don't forget the idea. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7492#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler ___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
[GHC] #7492: Generic1 deriving: Can we replace Rec1 f with f :.: Par1?
#7492: Generic1 deriving: Can we replace Rec1 f with f :.: Par1? -+-- Reporter: spl | Owner: Type: feature request | Status: new Priority: normal| Component: Compiler Version: 7.7 | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Blockedby: Blocking:|Related: -+-- It seems like `Rec1 f` is isomorphic to `f :.: Par1`. Is it possible and beneficial to replace the former with the latter and deprecate/remove `Rec1`? 1. Currently, a parameter type is found in `Par1` or `Rec1`. By removing `Rec1`, there would be only one place for parameters. This simplifies generic functions. 2. It is in the interest of reducing redundancy in the representation, something that appears to be consistent with the design of the representation types (e.g. using the same type for multiple meanings). -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7492 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler ___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
