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Date: Tue, 08 Mar 2005 22:48:52 +0100
From: Georg Bauhaus <bauhaus@futureapps.de>
Organization: future apps GmbH
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Newsgroups: comp.lang.ada,comp.lang.c++,comp.realtime,comp.software-eng
Subject: Re: Teaching new tricks to an old dog (C++ -->Ada)
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Date: 2005-03-08T22:47:16+01:00
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CTips wrote:

> Nope, not z = p[0], z = p; Z is a _pointer_ to int, not an int.

Well, yes. Nothing stops you from passing a pointer to an int
in Ada, in both read-only and read-write mode.
And you can of course have pointers to arbitraty locations but you
have to use language to express this fact, using for example

   for X'Adress use ...;

Or use the adressing types and operations in the System hierarchy.

You can also use any bit pattern to represent anything as long as
you explicitly ask for a new interpretation. Isn't this slightly more
permissive than what can be expressed using reinterpret_cast in C++?

Also, Unchecked_Conversion is neither casting, nor the usual type
conversion.
If I wanted the bits of a 32 bits float of value 3.14 to stand for an
integer, type conversion will give 3, an instance of Unchecked_Conversion
will give 1078523331.

Georg