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: 103376,7d3cb5920e882220
X-Google-Attributes: gid103376,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news2.google.com!news.glorb.com!newsfeed2.telusplanet.net!newsfeed.telus.net!edtnps90.POSTED!53ab2750!not-for-mail
Sender: blaak@METROID
Newsgroups: comp.lang.ada
Subject: Re: Exceptions
References: 
 <5947aa62-2547-4fbb-bc46-1111b4a0dcc9@x69g2000hsx.googlegroups.com>
 <KoSdnYQKWIUB9cXanZ2dnUVZ_oytnZ2d@comcast.com>
 <wcczlwj1ra7.fsf@shell01.TheWorld.com>
 <475c688f$0$17524$9b4e6d93@newsspool4.arcor-online.net>
 <u1w9tk62w.fsf@stephe-leake.org>
 <4dae26fe-0c8a-46e1-9a33-43c18cf757ae@i3g2000hsf.googlegroups.com>
 <wccejdqzp9p.fsf@shell01.TheWorld.com>
 <9f16235c-260a-460b-873c-2183c154cc0c@e25g2000prg.googlegroups.com>
 <wcclk7ypsbp.fsf@shell01.TheWorld.com> <u4pem6r3t.fsf@STRIPCAPStelus.net>
 <fjspvo$2ub$1@jacob-sparre.dk>
From: Ray Blaak <rAYblaaK@STRIPCAPStelus.net>
Message-ID: <uejdpu77n.fsf@STRIPCAPStelus.net>
Organization: The Transcend
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.1
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Fri, 14 Dec 2007 06:21:50 GMT
NNTP-Posting-Host: 154.20.94.243
X-Trace: edtnps90 1197613310 154.20.94.243 (Thu, 13 Dec 2007 23:21:50 MST)
NNTP-Posting-Date: Thu, 13 Dec 2007 23:21:50 MST
Xref: g2news1.google.com comp.lang.ada:18940
Date: 2007-12-14T06:21:50+00:00
List-Id: <comp.lang.ada>

"Randy Brukardt" <randy@rrsoftware.com> writes:
> I generally agree with you, but there is one case where you need to do
> specific exception handling: when you need to change one exception into
> another.

Ok, it has to be said again: exceptions need to be first class objects.

Changing an exception into another is trivial in most languages, typically by
wrapping it with another of the desired kind.

Ada's difficulties with manipulating exceptions are completely self induced.

> P.S. Ada programmers *raise* exceptions. The only thing that Ada programmers
> "throw" is the trash into the trash can... ;-)

Real languages don't have a trash can. There is a janitor in the background
cleaning everything up. Exceptions are the only thing left to throw >-).

Ada is a pretty good language. Garbage collection is a step up the
evolutionary ladder though, and needs to be available within Ada as well,
perhaps under programmer control to be disabled when necessary.  Google some
previous threads for my arguments on this topic.

-- 
Cheers,                                        The Rhythm is around me,
                                               The Rhythm has control.
Ray Blaak                                      The Rhythm is inside me,
rAYblaaK@STRIPCAPStelus.net                    The Rhythm has my soul.