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From: "(see below)" <yaldnif.w@blueyonder.co.uk>
Newsgroups: comp.lang.ada
Subject: Re: Operation can be dispatching in only one type
Date: Mon, 30 Nov 2009 23:54:09 +0000
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Date: 2009-11-30T23:54:09+00:00
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On 30/11/2009 20:36, in article wcc8wdn697e.fsf@shell01.TheWorld.com,
"Robert A Duff" <bobduff@shell01.TheWorld.com> wrote:

> stefan-lucks@see-the.signature writes:

>> Distinguishing the two different operations which are written as ":=" in
>> Ada by using different words and even different symbols would make a lot of
>> sense. 
 
> I definitely want to use different symbols as well as different words.
> But I'm not sure what symbols to choose.  Maybe := and :== .
> 
> I want to allow:
> 
>     X : Integer;
>     
>     if ... then
>         X := 0; -- initialize (what I want to call "assign")
>     else
>         X := 1; -- initialize (what I want to call "assign")
>     end if;
>     
>     while ... loop
>         X :== X + 1; -- overwriting (what I want to call "reassign")
>         ...
>     end loop;

What is wrong with the terms "initialize" and "assign", respectively?

   X : Integer initially if ... then 0 else 1 end if;
   Y : Integer constant  if ... then 1 else 2 end if;
   
   while ... loop
      X := X + Y; -- assign
      ...
   end loop;

-- 
Bill Findlay
<surname><forename> chez blueyonder.co.uk