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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Ada Successor Language
Date: Sat, 2 Jun 2018 14:43:39 +0200
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Date: 2018-06-02T14:43:39+02:00
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On 2018-06-02 14:14, Mehdi Saada wrote:
>> I don't understand this push for a new language.
> Haven't you complained already how such or such area is unlikely to even be fixed because of backward compatibility ?

In most cases it is merely an excuse to reject a change. Most changes 
can be made keeping everything compatible.

E.g. for renaming one can use an alternative syntax (which is needed 
anyway) and let the old renaming slowly die.

>> We should adopt the common C shorthand operators, -=, +=, etc.
> What's the problem with @ ? It's more elegant and versatile.

You mean @ for idem as in

    X := Idem + 1;

It is semantically problematic because it limits the implementation or 
forces a wrong implementation in case of temporal, volatile, shared 
objects. A special operator would allow implementation via proper procedure.

It is analogous to automatic dereferencing and indexing. There will be 
no solution to until these operations will be done via user-defined 
procedure. No number of kludges and obscure helper type will ever work. 
Assignment is no different.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de