Ross Paterson ross at
Wed Sep 14 06:39:35 EDT 2005

On Wed, Sep 14, 2005 at 06:31:01AM -0400, Cale Gibbard wrote:
> By the way, Data.Set should perhaps be made an instance of Monoid in
> the obvious way.

It already is, but the instance is in Data.Monoid to prevent the
non-portability of Data.Monoid (caused by the existing -> instance)
infecting Data.Set.

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