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=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: 103376,7332b19c66a79eea
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news2.google.com!news3.google.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: Quantified Expressions: "some"
Date: Wed, 17 Nov 2010 10:25:35 +0200
Organization: Tidorum Ltd
Message-ID: <8khhs0F22oU1@mid.individual.net>
References: <4ce31bb6$0$7670$9b4e6d93@newsspool1.arcor-online.net>
 <2d44ff4d-b3ad-4593-8492-4d16fb6b6a2e@j2g2000yqf.googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: individual.net lqlv9EA4YuT922QHpdNjZg9vIYlk1ZFhLhzkX+Rwzzh/JJafk1
Cancel-Lock: sha1:heJ+RVcPSnXo6tZKRUfRmEiMfuM=
User-Agent: Mozilla-Thunderbird 2.0.0.24 (X11/20100328)
In-Reply-To: 
 <2d44ff4d-b3ad-4593-8492-4d16fb6b6a2e@j2g2000yqf.googlegroups.com>
Xref: g2news2.google.com comp.lang.ada:16507
Date: 2010-11-17T10:25:35+02:00
List-Id: <comp.lang.ada>

AdaMagica wrote:
> On 17 Nov., 01:03, Georg Bauhaus <rm-host.bauh...@maps.futureapps.de>
> wrote:
>>   (for all  X in domain | P (X))
>>   (for some X in domain | P (X))
> These are the Ada expressions for the mathematical "all" and
> "existence" quantifiers and read quite naturally.
> 
> Draft 10 of RM 2010 defines some as a new reserved word.
> 
>>   (for when X in domain | P (X))
> 
> This is silly English, and when I try to make sense of it, I arrive at
> the all quantifier. So I think, just for avoiding a new reserved word,
> this is a very bad proposal.

Among the existing keywords, "select" has nearly, but not quite, the 
right meaning:

    (for select X in domain | P (X))

But it would be better as "selected", and if a new word must be 
reserved, I agree that "some" is best. Although it is yet another nice, 
short, expressive word that will then be forbidden us for use as an 
identifier.

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