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: 103376,35782846f963b1e5
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Received: by 10.68.220.230 with SMTP id pz6mr17918104pbc.3.1341727796660;
        Sat, 07 Jul 2012 23:09:56 -0700 (PDT)
Path: 
 l9ni11132pbj.0!nntp.google.com!news1.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!novia!news.glorb.com!news.netfront.net!not-for-mail
From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
Newsgroups: comp.lang.ada
Subject: Re: on the need to duplicate code for procedure signature in both
 body and interface files
Date: Sat, 07 Jul 2012 23:09:52 -0700
Organization: Also freenews.netfront.net; news.tornevall.net
Message-ID: <jtb87i$2io5$1@adenine.netfront.net>
References: <jtafi8$pvg$1@speranza.aioe.org>
NNTP-Posting-Host: 184.20.13.59
Mime-Version: 1.0
X-Trace: adenine.netfront.net 1341727796 84741 184.20.13.59 (8 Jul 2012
 06:09:56 GMT)
X-Complaints-To: news@netfront.net
NNTP-Posting-Date: Sun, 8 Jul 2012 06:09:56 +0000 (UTC)
User-Agent: Mozilla/5.0 (X11; Linux i686;
 rv:13.0) Gecko/20120615 Thunderbird/13.0.1
In-Reply-To: <jtafi8$pvg$1@speranza.aioe.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Date: 2012-07-07T23:09:52-07:00
List-Id: <comp.lang.ada>

On 07/07/2012 04:08 PM, Nasser M. Abbasi wrote:
> Basic question from an Ada newbie.
>
> One thing that always bothered me in Ada is the need
> to physically duplicate the code that represents the API
> of the package procedures and functions in both the interface
> and the body files (.ads and .adb).
>
> I do not like duplicating code at all. Even if it is only
> for the signature of the API, and even though the Ada
> compiler will catch any difference (assuming one changes
> the .ads and forget to update the .adb for example).

Consider the following:

package P is
    function F (I : Integer) return Integer;

    type Integer_List is array (Integer range <>) of Integer;

    function F return Integer_List;
end P;

How are you going to write the body of P so the compiler knows which body 
implements which function F without repeating the parameter list and return type 
profile, which is what distinguishes these 2 overloaded functions?

-- 
Jeff Carter
"This school was here before you came,
and it'll be here before you go."
Horse Feathers
48



--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---