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,ee561d9d6fd47dd6,start
X-Google-Attributes: gid103376,public
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news2.google.com!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.freenet.de!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!newsmm00.sul.t-online.de!t-online.de!news.t-online.com!not-for-mail
From: matthias_k <nospam@digitalraid.com>
Newsgroups: comp.lang.ada
Subject: What exactly is the ' operator
Date: Wed, 06 Oct 2004 11:40:23 +0200
Organization: T-Online
Message-ID: <ck0ei1$ure$05$1@news.t-online.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: news.t-online.com 1097055617 05 31598 xrnmXkQJx2+5oGW 041006 09:40:17
X-Complaints-To: usenet-abuse@t-online.de
X-ID: ZkG4nYZGoeucBYgWIjNt+Fbfeb-yfikNyx08L8WZPUMGiLUEHVeDs5
User-Agent: Mozilla Thunderbird 0.8 (X11/20040918)
X-Accept-Language: en-us, en
Xref: g2news1.google.com comp.lang.ada:4786
Date: 2004-10-06T11:40:23+02:00
List-Id: <comp.lang.ada>

Hello,

I can't find the specifics about the mysterious ' operator, which 
purpose seems to access certain attributes of a datatype.
However I've seen it being used in the most various situations, so I was 
wondering what exactly it is used for, how it is called, etc.

Furthermore, can I define my own '-operations?

Thanks in advance,
Matthias