From: Kilgallen@SpamCop.net (Larry Kilgallen)
Subject: Re: Mneson announcement and help request
Date: 4 Jun 2004 08:11:25 -0600
Date: 2004-06-04T08:11:25-06:00 [thread overview]
Message-ID: <cmtRqMX$9du1@eisner.encompasserve.org> (raw)
In-Reply-To: 2f8p9c.0p5.ln@skymaster
In article <2f8p9c.0p5.ln@skymaster>, "Jean-Pierre Rosen" <rosen@adalog.fr> writes:
>
>> "Randy Brukardt" <randy@rrsoftware.com> wrote in message
>> news:-NSdneXjh7wndyLdRVn-vw@megapath.net...
>> > My point was that as long as you keep the exception handler and raising
>> out
>> > of the loop (which is certainly true for EOF), it can be quite efficient.
>> In
>> > the normal case (where you read many characters before reaching the end of
>> > the file), it's almost always better to handle the exception. That's
>> because
>> > one exception raise/handling pair is a lot cheaper than 10,000 function
>> > calls, especially one as expensive as EOF.
>
> I always use the exception mechanism for another reason:
> In the presence of a "malformed" file (i.e. one where the last line has no line terminator before EOF), you may have an unexpected
> End_Error even if End_Of_File was false. Of course, this is outside Ada semantics, but it's the real world that text files are
> sometimes being typed by human beings....
That seems to be restricted to operating systems where the file system
does not handle record semantics.
next prev parent reply other threads:[~2004-06-04 14:11 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-01 15:56 Mneson announcement and help request Marius Amado Alves
2004-06-02 2:26 ` Jeff C,
2004-06-02 3:06 ` Marius Amado Alves
2004-06-02 11:19 ` Georg Bauhaus
2004-06-02 11:41 ` Marius Amado Alves
[not found] ` <c9l0vo$pq3$1@sparta.btinternet.com>
2004-06-02 17:47 ` Marius Amado Alves
2004-06-02 19:46 ` Martin Dowie
2004-06-02 22:10 ` Randy Brukardt
2004-06-03 5:58 ` Martin Dowie
2004-06-04 3:21 ` Randy Brukardt
2004-06-04 5:55 ` Martin Dowie
2004-06-04 7:30 ` Jean-Pierre Rosen
2004-06-04 14:11 ` Larry Kilgallen [this message]
2004-06-03 4:12 ` Jeffrey Carter
2004-06-03 5:48 ` Martin Dowie
2004-06-03 9:02 ` Martin Krischik
2004-06-02 11:41 ` Georg Bauhaus
2004-06-02 13:14 ` Marius Amado Alves
2004-06-03 4:09 ` Jeffrey Carter
2004-06-03 11:24 ` Georg Bauhaus
2004-06-02 3:21 ` Marius Amado Alves
2004-06-22 20:49 ` Jacob Sparre Andersen
2004-06-23 9:36 ` Marius Amado Alves
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox