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From: Pascal Obry <pascal@obry.net>
To: AdaMagica <christ-usch.grein@t-online.de>
Subject: Re: Why constant components are not permitted ?
Date: Sat, 26 Nov 2011 11:22:35 +0100
Date: 2011-11-26T11:22:35+01:00	[thread overview]
Message-ID: <4ED0BDEB.9030002@obry.net> (raw)
In-Reply-To: <14efc07c-744c-4f9a-905b-b9e3ad353e55@cc2g2000vbb.googlegroups.com>

Le 25/11/2011 11:06, AdaMagica a �crit :
> Useful applications for constant components could be (this is what you
> can have in C++):
> 
> record  -- *not* Ada
>   Name: constant String   := "James Bond";
>   Id  : constant Positive := 007;  -- e.g employee number of a company
>   other variable components
> end record;
> 
> In Ada, you hide the components (private record), define a constructor
> function providing the values for the constant items and provide only
> read operations for them.

But why on earth do you want a field in a record with the same value for
all objects of this type?

This looks like an application wide constant, so just declare the
constant value outside of the record.

Pascal.

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  parent reply	other threads:[~2011-11-26 10:22 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-24 18:14 Why constant components are not permitted ? David Sauvage
2011-11-24 19:06 ` anon
2011-11-24 19:49   ` David Sauvage
2011-11-24 22:55     ` Georg Bauhaus
2011-11-24 23:53     ` anon
2011-11-24 19:46 ` Ludovic Brenta
2011-11-25  9:10   ` Dmitry A. Kazakov
2011-11-25 10:23     ` Ludovic Brenta
2011-11-25 10:45       ` Dmitry A. Kazakov
2011-11-25  6:56 ` Niklas Holsti
2011-11-25  9:53   ` Yannick Duchêne (Hibou57)
2011-11-25 10:06     ` AdaMagica
2011-11-25 10:16       ` AdaMagica
2011-11-25 10:56       ` Yannick Duchêne (Hibou57)
2011-11-25 17:41       ` Niklas Holsti
2011-11-26  0:23         ` anon
2011-11-29  4:10         ` Randy Brukardt
2011-11-29  7:55           ` David Sauvage
2011-11-29 10:55             ` Yannick Duchêne (Hibou57)
2011-11-29 11:17             ` Mark Lorenzen
2011-11-26 10:22       ` Pascal Obry [this message]
2011-11-26 10:59         ` Dmitry A. Kazakov
2011-11-25  7:03 ` AdaMagica
2011-11-25  9:12 ` Dmitry A. Kazakov
2011-11-25  9:57   ` Yannick Duchêne (Hibou57)
2011-11-25 10:22     ` Dmitry A. Kazakov
2011-11-25 11:00       ` Yannick Duchêne (Hibou57)
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