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From: Georg Bauhaus <sb463ba@l1-hrz.uni-duisburg.de>
Newsgroups: comp.lang.ada
Subject: Re: Proposed change to BC iterator parameters
Date: Fri, 19 Dec 2003 16:17:18 +0000 (UTC)
Organization: GMUGHDU
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Dmitry A. Kazakov <mailbox@dmitry-kazakov.de> wrote:
 
: function Search (X : Container; Key : Item_Key) return Item is
: begin
:   Enumerate
:   (  X,
:      procedure (I : Item) is
:      begin
:         if Get_Key (I) = Key then
:            return I out Search; -- Return through all nested contexts
:         end if;
:      end;
:   );
:   raise Nothing_Found;
: end Search;

wouldn't an active(?) iteration do the job in a satisfying way,
using is_done, element, and next, in a loop?