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- From: Curt Arnold <curta_ontheroad@yahoo.com>
- To: Leigh Dodds <ldodds@ingenta.com>, xml-dev@ic.ac.uk
- Date: Tue, 21 Dec 1999 21:38:55 -0800 (PST)
Sorry to harp on it, but this is another example of
the general usefulness of support for lists in XML
Schema as I tried to strongly lobby (as much as you
can outside the W3C) earlier this month. See my
comments on the schema comments archive,
http://lists.w3.org/Archives/Public/www-xml-schema-comments/1999OctDec/0038.html.
Lists would also be useful for DNS names.
--- Leigh Dodds <ldodds@ingenta.com> wrote:
> > > > However, this is not satisfactory - it allows
> each field in the IP to
> > > > have values from 000-999. I want to restrict
> the possible values to:
> > > > [0-255].[0-255].[0-255].[0-255]
> > >
> > > You can avoid the problem by storing the IP as a
> hex address, as in:
> > >
> > > ff.ff.ff.ff
> > >
> > Thanks Ray. An interesting choice of words - "You
> can avoid the
> > 'problem' ...". I think that it is a "problem" if
> such a common, simple
> > datatype cannot be expressed directly, and one is
> forced to resort to
> > indirect means of expressing what is desired.
> Yes? /Roger
>
> It also becomes trickier if you want to disallow IP
> addresses such
> as 127.0.0.1, 0.0.0.0, etc.
>
> L.
>
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