On Tue, Feb 1, 2011 at 11:47 AM, Ozgur Akgun <ozgurak...@gmail.com> wrote:
> On 1 February 2011 11:41, John Lato <jwl...@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? > Not to my knowledge. John
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