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=0.4 required=5.0 tests=BAYES_00,FORGED_MUA_MOZILLA
	autolearn=no autolearn_force=no version=3.4.4
X-Google-Thread: a07f3367d7,707e18bffca9c9cd
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII-7-bit
Received: by 10.66.82.2 with SMTP id e2mr1829711pay.40.1344321533795;
        Mon, 06 Aug 2012 23:38:53 -0700 (PDT)
Path: 
 p10ni2817324pbh.1!nntp.google.com!border1.nntp.dca.giganews.com!border4.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!ctu-peer!news.nctu.edu.tw!goblin2!goblin.stu.neva.ru!news.internetdienste.de!news.tu-darmstadt.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: question on using `with` without  `use` and visibility of
 operators
   such as '*'
Date: Mon, 30 Jul 2012 09:30:54 +0300
Organization: Tidorum Ltd
Message-ID: <a7mo0uFqi5U1@mid.individual.net>
References: <jv585h$9tj$1@speranza.aioe.org>
Mime-Version: 1.0
X-Trace: individual.net
 ehfBsYZXNaruT4ZpHQaJowU02u8vgnhy8uloJwewdpLgS9uzOcW/zjZM8cefEPmEVp
Cancel-Lock: sha1:PSYUY2f7W/ijfT8zshZF389Z1nM=
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6;
 rv:14.0) Gecko/20120713 Thunderbird/14.0
In-Reply-To: <jv585h$9tj$1@speranza.aioe.org>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Date: 2012-07-30T09:30:54+03:00
List-Id: <comp.lang.ada>

On 12-07-30 09:04 , Nasser M. Abbasi wrote:
> <warning, newbie in Ada>
> 
> I prefer to use the long name of a package when I call some of its
> functions. So I like to write
> 
> ------------------------
> with package_foo;
>    package_foo.function_name();
> -----------------------
> 
> rather than
> 
> -----------------------
> with package_foo; use package_foo;
>   function_name();
> ----------------------
> 
> So that when reading the code, I know where things are.
> 
> This worked well so far, but when the package happened to export
> functions/operators  such as '*' or "+" for the types, then it will
> not work any more. i.e. I really want to just write
> 
>            x * y
> 
> where x,y are variables with types defined in the package, and not write
> 
>            x package_foo("*") y
> 
> (or whatever the correct syntax would be)
> 
> This is annoying. It means I have now to `use package_foo`
> to be able to write  x*y, since "*" is defined in the package.
> 
> Is there a way around this, so I can avoid using `use` but still
> be able to just write   x * y  (may be use something like
> `use package_foo("*") at the top if this possible)

Use "use type package_foo.T", where T is the type of x and y. Then you
can apply the "primitive operators" of the type with qualifying with the
package name.

See the "use_type_clause" in
http://www.ada-auth.org/standards/12rm/html/RM-8-4.html.

Note the additional names made visible when the "all" keyword is placed
between "use" and "type".

-- 
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
      .      @       .