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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Separate Compilation in Programming Languages
Date: Tue, 26 Feb 2008 20:15:11 -0500
Organization: The World Public Access UNIX, Brookline, MA
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Date: 2008-02-26T20:15:11-05:00
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Ray Blaak <rAYblaaK@STRIPCAPStelus.net> writes:

> Ray Blaak <rAYblaaK@STRIPCAPStelus.net> writes:
>> <adaworks@sbcglobal.net> writes:
>> > Further, the implementation of the Interface, with its extended signature is
>> > in the same file with the algorithmic code.
>> 
>> Actually no. This is highly unusual. The vast majority of implementation
>> classes would reside in different files from their inferfaces.
>
> I think I misread this. Yes, or course, the implementation contains the
> algorithmic code. That is the point. But clients need not see this class, and
> thus are not impacted by changes to it.

I initially misread it the same way you did, I think ("the interface is
in the same file as...") but on second reading, I see Richard is correct
-- "the IMPLEMENTATION OF the interface WITH ITS EXTENDED SIGNATURE is
in the same file as...", here emphasized.

I agree, though, that "clients need not see this class...".

- Bob