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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Ada is getting more popular!
Newsgroups: comp.lang.ada
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Date: Sun, 31 Oct 2010 21:00:02 +0100
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Date: 2010-10-31T21:00:04+01:00
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On Sun, 31 Oct 2010 11:04:56 -0700, Jeffrey Carter wrote:

> On 10/31/2010 03:54 AM, Dmitry A. Kazakov wrote:
>>
>> 5) you want to postpone some design decision/implementation to a later
>> point. So you describe/implement what you know for certain right now, in
>> the form of an abstract type, and let a derived type to define the rest
>> when more information becomes available.
> 
> Deferring implementation decisions is the job of information hiding, implemented 
> in Ada by packages, not the type system.

Deferring and hiding are two different aspects of design.

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