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From: tmoran@bix.com
Subject: Re: Ada Queue
Date: 2000/04/08
Message-ID: <cxMH4.742$uE2.267823@news.pacbell.net>#1/1
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References: <K77H4.420$Qy3.109906@news.pacbell.net>
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 08 Apr 2000 13:21:28 PDT)
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Newsgroups: comp.lang.ada
Date: 2000-04-08T00:00:00+00:00
List-Id: <comp.lang.ada>

Renaming and rearranging, you get the more Ada-ish, and IMHO clearer:

procedure Enqueue(Q: in out Queue; E : Element_type) is
   Cursor : Queue;
begin
   if Q = null then
       Q := new QueueNode'(Data=>E, Rest=>null);
   else
       Cursor := Q;
       while Cursor.Rest /= null loop
          Cursor := Cursor.Rest;
       end loop;
       Cursor.Rest := new QueueNode'(Data=>E, Rest=>null);
   end if;
end Enqueue;