24 Oct
2008
24 Oct
'08
5:40 a.m.
Hello Alberto, Friday, October 24, 2008, 12:20:39 PM, you wrote:
instance R a => A a instance S a => A a Duplicate instance declarations Why?
because you may write in other module instance R Int instance S Int if class A includes functions, it may be problematic to determine which implementation (via R or via S) to use -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com