[Haskell-cafe] Re: [Haskell] recursive deriving

2007-11-21 Thread Lennart Augustsson
This seems very, very wrong. The missing instance(s) might be left out because of some good reason (e.g. if you have implemented sets with list and not provided Ord). On Nov 21, 2007 12:59 AM, Duncan Coutts [EMAIL PROTECTED] wrote: On Tue, 2007-11-20 at 19:18 -0500, Alex Jacobson wrote: When

[Haskell-cafe] Re: [Haskell] recursive deriving

2007-11-20 Thread Duncan Coutts
On Tue, 2007-11-20 at 19:18 -0500, Alex Jacobson wrote: When you want automated deriving of show/read etc., you need all the components of your type also to be instances of show/read but you won't want to *require* them to be automatically generated verions. Standalone deriving does the

Re: [Haskell-cafe] Re: [Haskell] recursive deriving

2007-11-20 Thread Don Stewart
duncan.coutts: On Tue, 2007-11-20 at 19:18 -0500, Alex Jacobson wrote: When you want automated deriving of show/read etc., you need all the components of your type also to be instances of show/read but you won't want to *require* them to be automatically generated verions. Standalone