To Flavio,
> > Using the not-yet-available grep:
> >
> > my $new_set = $spanset->set_grep(
> > sub { $_[0]->intersects( $span ) }
> > );
> >
>
> note: this won't "bound" an unbounded recurrence immediately.
> This means that as_list() and iterate() are disabled.
>
> This kind of intersection could be implemented in Set::Infinite as a
> low-level method.
> How would you name this method?
I'm not quite sure if I understand what you mean. Is the
problem that Set::Infinite describes only starts and ends of an
infinite span of elements rather than listing each element? If
that's the case, the i transition from continuous elements to
discrete elements could be called
discretize (I guess you want american spelling)