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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Real syntax problems in Ada
Date: Thu, 30 Aug 2012 16:08:52 -0500
Organization: Jacob Sparre Andersen Research & Innovation
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Date: 2012-08-30T16:08:52-05:00
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:ldvcp6um0oly$.13zvgiqtmhctv.dlg@40tude.net...
> On Tue, 28 Aug 2012 14:07:32 -0700 (PDT), Adam Beneschan wrote:
>
>> Starting with Ada 2005, it's now possible to say (1..0 => <>), which 
>> makes
>> things better than they were before--at least there's no more problem of
>> having to come up with a dummy value to put on the right side of the
>> arrow.
>
> What about
>
>    (<> => <>)
>
> ? (:-))
>
> Actually since we have Unicode, we could take use of U+2205 (empty set),
> So:
>
>   (? => <>)

Lovely. In the font in my newsreader, I get the dreaded square box for an 
unrecognized character. So I've got a square box choosing an Ada box (the 
name of "<>")! Looks pretty much the same as your first option. :-)

                                   Randy.