On Tue, 2 Sep 2003, Flavio S. Glock wrote:

> > If we want to document and specify that this is an error, then the size
> > should be infinite.  Otherwise, if we might want to allow this in the
> > future, undef is correct.  I don't feel too terribly strongly either way.
>
> Ok. So let's document that it is an error.

Sounds good.  We can always change it later if we decide we need that
flexibility.

> How about: return 'infinity' when we _know_ the set is infinite, and
> return 'undef' when we don't know how big the set is.

That works.


-dave

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