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From: dweller@dfw.net (David Weller)
Subject: Re: Translate this into Ada ...
Date: 1996/08/21
Message-ID: <4vf26s$h4m@dfw.dfw.net>#1/1
X-Deja-AN: 175579965
references: <3219E6E2.2F5@eurocontrol.fr>
organization: DFWNet -- Public Internet Access
newsgroups: comp.lang.ada
Date: 1996-08-21T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <3219E6E2.2F5@eurocontrol.fr>,
Richard Irvine  <Richard.Irvine@eurocontrol.fr> wrote:
>How using generics, abstract types (e.g. AbstractList and
>AbstractIterator), 
>abstract subprograms or any other Ada features can this decision be
>expressed? 
>
>I have struggled with this for quite some time without finding a
>satisfactory
>solution. Any suggestions gratefully received.

Take a look at the sources for the Ada 95 Booch Conponents at
http://www.ocsystems.com/booch.  I know the existing material there is
out of date, and there will be an update in about a month (promise!),
but it can give you an idea on how to approach the problem.

Your approach seems similar to the approach used for the C++ STL,
which is OK, but the Booch Components will give you a different feel
for the implementation of iterators.

-- 
    Visit the Ada 95 Booch Components Homepage: www.ocsystems.com/booch
           This is not your father's Ada -- lglwww.epfl.ch/Ada