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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Is this expected behavior or not
Date: Wed, 13 Mar 2013 16:01:27 -0500
Organization: Jacob Sparre Andersen Research & Innovation
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Date: 2013-03-13T16:01:27-05:00
List-Id: <comp.lang.ada>

"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:vxjicagtvzjg.1bcu3fzy711ux$.dlg@40tude.net...
...
> What I said is that Ada subtype is a type-algebraic operation that 
> produces
> a new type which properties are described in ARM. There are other type
> algebraic operations which produce array, record types, tagged extension,
> class-wide types, generic expansions/instantiations etc. They all are used
> to construct new *types* from existing ones.

A subtype does not create a new type, the quote you made from the RM says as 
much. QED :-)

When talking about Ada, no one cares about abstract mis-definitions of the 
word "type" used by people who have no clue how to define a proper 
programming language. IMHO, Ada was the first language to get these things 
right (which I why I got professionally involved in Ada in the first 
place -- it was just a much better design than Pascal, C, or Modula, all of 
which I used before Ada). And ivory tower theories of programming language 
design are rarely worth the paper they're printed on -- it's not worth 
anyone's time to waste mental energy on that.

You have many interesting ideas that would be far better served if you 
described them in Ada-terms. You're consistent refusal to do so means that 
they mostly get ignored -- and Ada (and programming in general) is all the 
poorer for it.

                                           Randy.