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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Initializing an array of tasks with discrimants
Date: Sat, 23 Nov 2019 09:29:38 +0100
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Date: 2019-11-23T09:29:38+01:00
List-Id: <comp.lang.ada>

On 2019-11-22 23:07, Jere wrote:
> I recently ran into a situation where I had an array
> of tasks that had discriminants (with a default), but
> I couldn't find a simple way to initialize them.  I
> did come up with a workaround, but wanted to see if
> the language defined a way to do this:
> 
>      task type T(D: Integer := 3);

The cleanest way would be a protected generator of unique task IDs:

    protected ID is
       procedure Get (ID : out Integer);
    private
       Free : Integer := 0;
    end ID;

       procedure Get (ID : out Integer) is
       begin
           ID := Free;
           Free := Free + 1;
       end Get;

    task body T is
       D : Integer;
    begin
       ID.Get (D);
       ...
    end T;

No discriminants.

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