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From: Martin Krischik <krischik@users.sourceforge.net>
Subject: Re: Is it really Ok to assert that the Ada syntax is a context-free grammar ?
Date: Thu, 21 Feb 2008 20:24:14 +0100
Date: 2008-02-21T20:24:14+01:00	[thread overview]
Message-ID: <1646707.uLek5tK8oX@linux1.krischik.com> (raw)
In-Reply-To: 37b7e369-01c8-4adf-8d1e-c40fa7e51cea@f47g2000hsd.googlegroups.com

Ludovic Brenta wrote:

> Martin Krischik wrote:
>> Jeffrey R. Carter schrieb:
>> > X (Y) cannot represent a type cast because Ada does not have anything
>> > called "type cast".
>>
>> Not quite, if you consider "type cast" is a unchecked bit pattern copy -
>> so if you define:
> 
> Jeffrey is correct; it is not a "type cast", it is a "type conversion"
> and there is no such thing as "Ada.Unchecked_Cast". Yes, this is nit-
> picking; why would we choose Ada if we didn't care about details and
> wording?

(X)Y copy a bit pattern.
reinterpret_cast <X>(Y) copies a bit pattern.
Unchecked_Conversion (Y) copies a bit pattern.

Just because there are three different words does not mean they are
different concepts. Just as Red, Rot and Rouge are three different words
describing the same colour.

Martin
-- 
mailto://krischik@users.sourceforge.net
Ada programming at: http://ada.krischik.com



  parent reply	other threads:[~2008-02-21 19:24 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-20  0:47 Is it really Ok to assert that the Ada syntax is a context-free grammar ? Hibou57
2008-02-20  2:06 ` Jeffrey R. Carter
2008-02-20 10:05   ` Martin Krischik
2008-02-20 10:34     ` Ludovic Brenta
2008-02-20 11:13       ` Dmitry A. Kazakov
2008-02-22  8:57         ` Stephen Leake
2008-02-22 10:44           ` Dmitry A. Kazakov
2008-02-20 14:22       ` Hibou57
2008-02-20 15:19         ` Niklas Holsti
2008-02-20 18:34           ` Hibou57 (Yannick Duchêne)
2008-02-20 19:10             ` Hibou57 (Yannick Duchêne)
2008-02-21  0:39               ` Randy Brukardt
2008-02-21  0:56                 ` Hibou57 (Yannick Duchêne)
2008-02-21 22:19                   ` Randy Brukardt
2008-02-21 23:54                     ` Hibou57 (Yannick Duchêne)
2008-02-22 19:51                       ` Randy Brukardt
2008-02-23 18:13                         ` Hibou57 (Yannick Duchêne)
2008-02-21 22:19                   ` Randy Brukardt
2008-02-20 20:22             ` Niklas Holsti
2008-02-20 21:38             ` Manuel Collado
2008-02-21  0:30               ` Hibou57 (Yannick Duchêne)
2008-02-20 20:51         ` Robert A Duff
2008-02-21 19:24       ` Martin Krischik [this message]
2008-02-22 20:17         ` Simon Wright
2008-02-25 21:47           ` Samuel Tardieu
2008-02-23 19:02         ` Maciej Sobczak
2008-02-20 18:27     ` Jeffrey R. Carter
2008-02-21 19:20       ` Martin Krischik
2008-02-21 21:31         ` Jeffrey R. Carter
2008-02-20  5:53 ` Niklas Holsti
2008-02-20 16:43 ` Adam Beneschan
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