From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,fa18fb47ddd229a7
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2003-12-12 18:44:20 PST
Path: 
 archiver1.google.com!news2.google.com!newsfeed2.dallas1.level3.net!news.level3.com!crtntx1-snh1.gtei.net!news.gtei.net!newsfeed1.easynews.com!easynews.com!easynews!elnk-pas-nf1!elnk-nf2-pas!newsfeed.earthlink.net!attbi_feed3!attbi.com!attbi_s54.POSTED!not-for-mail
From: "Steve" <nospam_steved94@comcast.net>
Newsgroups: comp.lang.ada
References: <mailman.69.1071063420.31149.comp.lang.ada@ada-france.org>
 <wccekvc2rol.fsf@shell01.TheWorld.com> <FYSBb.359924$275.1185626@attbi_s53>
 <x7vwu921u54.fsf@smaug.pushface.org>
Subject: Re: Proposed change to BC iterator parameters
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
Message-ID: <72vCb.100044$_M.526172@attbi_s54>
NNTP-Posting-Host: 12.211.58.135
X-Complaints-To: abuse@comcast.net
X-Trace: attbi_s54 1071283459 12.211.58.135 (Sat, 13 Dec 2003 02:44:19 GMT)
NNTP-Posting-Date: Sat, 13 Dec 2003 02:44:19 GMT
Organization: Comcast Online
Date: Sat, 13 Dec 2003 02:44:19 GMT
Xref: archiver1.google.com comp.lang.ada:3430
Date: 2003-12-13T02:44:19+00:00
List-Id: <comp.lang.ada>

"Simon Wright" <simon@pushface.org> wrote in message
news:x7vwu921u54.fsf@smaug.pushface.org...
> "Steve" <nospam_steved94@comcast.net> writes:
>
> > "Robert A Duff" <bobduff@shell01.TheWorld.com> wrote in message
> > news:wccekvc2rol.fsf@shell01.TheWorld.com...
> > [snip]
> > >
> > > I don't understand the point of Param_Type and Param above.  If you
want
> > > to pass extra information to Apply, nest the instantiation in a place
> > > where it can see that data.
> >
> > The reason for Param_Type and Param is to avoid using data outside of
the
> > scope of the Apply routine except for the arguments to the Apply
machine.
> > It comes from that old school of thought:
> >   Avoid global data
> >   All inputs and outputs of a procedure should appear in their parameter
> > lists
> >
> > Following these simple guidelines usually makes code a lot easier to
follow.
>
> I see these extensions were added to the BCs on 1 Dec 1999, in
> response to a request from a user (also called Steve!)
>
That is why I felt compelled to explain my reasoning in this thread.

Steve
(The Duck)
(The Same Steve)

> -- 
> Simon Wright                               100% Ada, no bugs.