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From: Simon Wright <simon.j.wright@mac.com>
Newsgroups: comp.lang.ada
Subject: Re: using an Ada.Container as a private type
Date: Fri, 04 Apr 2008 20:37:38 +0100
Organization: Pushface
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Date: 2008-04-04T20:37:38+01:00
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Robert A Duff <bobduff@shell01.TheWorld.com> writes:

> Graham <graham.stark@virtual-worlds.biz> writes:
>
>> Good question. The intention was not to derive from Map at all: I
>> simply wanted to keep the fact that it was implemented as a Map
>> private. Is there a better way of doing that,...
>
> You could say:
>
>     type Payment_Stream is
>         record
>             M : Payment_Stream_Package.Map;
>         end record;
>
> which might be better, depending on what you want.

You could also, for example, include a mutex in the record for locking
in the presence of concurrency.