operator overloading

[david_ullrich at my-deja.com]

In article <20000605235010.C469 at xs4all.nl>,
  Thomas Wouters <thomas at xs4all.net> wrote:
> On Mon, Jun 05, 2000 at 03:02:47PM -0700, Ken Seehof wrote:
>
> > The following more closely conforms to these conventions:
>
> The return code of __cmp__ is hardly a convention! If you dont return
one of
> those values, in a consistent manner, you're going to confuse the
users of
> your class greatly. And possibly break things like list.sort()'s
default
> sort function.

     This reminds me of a question that I've never got around
to asking: Are there implicit requirements on __cmp__, like
the order it defines has to be transitive, __cmp(a,b)__ has
to be the opposite of __cmp(b,a)__, etc?

DU


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