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From: Brian Drummond <brian@shapes.demon.co.uk>
Newsgroups: comp.lang.ada
Subject: Re: What would you like in Ada202X?
Date: Sun, 1 Jul 2012 10:57:44 +0000 (UTC)
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Date: 2012-07-01T10:57:44+00:00
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On Sun, 01 Jul 2012 10:25:07 +0200, Dmitry A. Kazakov wrote:

> On Sat, 30 Jun 2012 21:06:15 +0000 (UTC), Brian Drummond wrote:
> 
>> On Sat, 30 Jun 2012 20:43:17 +0200, Dmitry A. Kazakov wrote:
>> 
>>> On Sat, 30 Jun 2012 17:00:46 +0000 (UTC), Brian Drummond wrote:
>>> 
>>>> On Sat, 30 Jun 2012 14:34:10 +0200, Dmitry A. Kazakov wrote:
>>> 
>>>>> Code review and maintainability problems. The set of symbols cannot
>>>>> be infinite.
>>>> 
>>>> Practical considerations surely restrict the length of additional
>>>> operators, but I'm not sure that restriction belongs in the syntax.
>>> 
>>> I didn't meant length. I think that the number of operators should be
>>> small to be memorizable. All symbols should be predefined, e.g. from
>>> the Unicode page.
>> 
>> A symbol is not necessarily a single character;  "<="  already isn't.
> 
> This is an ASCII artefact. With Unicode adopted, there is no need in
> such tricks. BTW, less-that-or-equal is one character: U+2264.

But until ASCII and/or Latin-1 are fully obsoleted, it is an artefact 
that must be supported. Therefore there are operators that are more than 
one character.

>> And restricting the sequence length necessarily restricts the number of
>> possible identifiers, so I'm not clear what you are suggesting.
...
> That is. No user-defined sequences.

But an extended set of built-in symbols for operators, only supported 
where full Unicode is available?

- Brian