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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: initialize an array (1-D) at elaboration using an expression
 based on the index?
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Date: Thu, 11 Nov 2010 09:30:57 +0100
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Date: 2010-11-11T09:30:57+01:00
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On Thu, 11 Nov 2010 02:07:39 +0100, Georg Bauhaus wrote:

> Just an ad-hoc idea:
> 
>     Jobs : array (X: Job_Id) of T := (others => Make(X));
> 
> where X: Job_Id is a little like a record discriminant
> passed on to constrain components, for example,
> only with a different "multiplicity".

That is by no way ad-hoc, I had this idea for a long time. The array
indices should have been named (optionally of course). It was missed in the
Ada 83 design.

Then the above could simply become:

   type Worker_Set is array (ID : Job_ID range <>) of T (ID);
        -- No discriminant default value needed

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