On 12/11/07, Jarrett Billingsley <kb3ctd2 at yahoo.com> wrote: > Where did you get this idea? I don't know. Glad to hear I'm wrong! Anyway, it turns out the rule is: "the function may not be a non-static member, i.e. it may not have a this pointer", so maybe that's what confused me. That does look like it rules out opAdd et al though.