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 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,ff949d1e0d505dfc
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2003-03-13 08:26:38 PST
Path: archiver1.google.com!postnews1.google.com!not-for-mail
From: mheaney@on2.com (Matthew Heaney)
Newsgroups: comp.lang.ada
Subject: Re: Using Grace.Lists.Unbounded in WindowsXP/GNAT3.15p
Date: 13 Mar 2003 08:26:37 -0800
Organization: http://groups.google.com/
Message-ID: <1ec946d1.0303130826.480cd301@posting.google.com>
References: <3e705a78$1@news.wineasy.se>
NNTP-Posting-Host: 66.162.65.162
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Trace: posting.google.com 1047572798 17037 127.0.0.1 (13 Mar 2003 16:26:38
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: 13 Mar 2003 16:26:38 GMT
Xref: archiver1.google.com comp.lang.ada:35292
Date: 2003-03-13T16:26:38+00:00
List-Id: <comp.lang.ada>

"Frank" <franjoe@frisurf.no> wrote in message news:<3e705a78$1@news.wineasy.se>...
> 
> The big picture(but not fully coded in this example):
> What I want to achieve is to be able to traverse a list, and based on
> information in the
> node, decide to remove it from the current position in the list and reinsert
> it at the end.
> This is done to postpone the calculation of the Node until all other Nodes
> have been calculated.

You said you're using GRACE, but here's how you'd do it in Charles:

procedure Op (List : in List_Subtype) is
   I : Iterator_Type := First (List);
   J : constant Iterator_Type := Back (List);
begin
   while I /= J loop
      declare
         E : Element_Subtype renames To_Access (I).all;   
      begin
         if Predicate (E) then
            Splice (List, Before => J, Iterator => I);
            return;
         end if;
      end;

      I := Succ (I);
   end loop;
end Op;

http://home.earthlink.net/~matthewjheaney/charles/