1 Feb
2011
1 Feb
'11
11:47 a.m.
On 1 February 2011 11:41, John Lato <jwlato@gmail.com> wrote:
The important point is that this declares an AbGroup instance for every type, not just types with Num instances.
So, is there a way to declare an AbGroup instance for the types with num instances only? Thanks, Ozgur