July 2024 - Oberon - mailman3.inf.ethz.ch

Re: [Oberon] Export of Oberon Mail.SendCmd().
by Joerg 30 Oct '26

30 Oct '26

Generally, re-using code instead of copying is a good approach. If you do so, then the whole code of Mail is imported in News. Possible but perhaps there is even a better approach to re-use code. What about this: try to separate all common code in an own module (e.g call it Communication.Mod or MsgBase.Mod or Utilities.Mod or so) and import this new module in Mail and in News. br Jörg > Am 14.06.2023 um 19:53 schrieb peter(a)easthope.ca: > > Hello again, > > Several procedures in Mail are used in Oberon News. Rg.: > Mail.ParseContent(), Mail.DecodeMessage() & Mail.GetSetting(). > > Is export of SendCmd() and use in News objectionable? > Ie. in Mail, change PROCEDURE SendCmd(...) to PROCEDURE SendCmd*(...). > > Thanks, ... P. > > - > mobile: +1 778 951 5147 > VoIP: +1 604 670 0140 > > -- > Oberon(a)lists.inf.ethz.ch mailing list for ETH Oberon and related systems > https://lists.inf.ethz.ch/mailman/listinfo/oberon

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Working directory in A2.
by peter＠easthope.ca 26 Jul '24

26 Jul '24

Hi, In Guenter's UnixAOS the working directory is obtained by "cd workingDirectory". In repository A2 on Linux, the working directory is set by this line in oberon.ini. Files.SetWorkPath <path>~ The installed "Files.SetWorkPath work~" is relative to the A2 starting directory and "Files.SetWorkPath /home/me/A2/Linuz64/work~" is an absolute location. Correct? In A2, Files > Files shows WORK. With the last setting above, a click on WORK lists the files in the working directory. WORK is capitalized for similarity to a volume in ETH Oberon? Another meaning? Thanks, ... P.L. -- VoIP: +1 604 670 0140 work: https://en.wikibooks.org/wiki/User:PeterEasthope

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Fighting a dragon ...
by Hans Klaver 18 Jul '24

18 Jul '24

Hi all, The dragon curve is an interesting space filling curve that you can approximate by endlessly folding a slip of paper. Apparently I'm not the only one who is fascinated by it; Don Knuth has one decorating a wall in his home: https://www.youtube.com/watch?v=v678Em6qyzk (and yes, it has a bug). When making a program to draw dragon curves of different orders for Oberon V5 (Project Oberon 2013) I noticed that odd order dragons look well and healthy but even order dragons degrade into shapeless worms (see the two screenprints on my github page for dragons of order 9 and 10). The same algorithm in BASIC and Python produces nice dragons of all orders, albeit MUCH slower that my Project Oberon version. For the source files and screenprints see: https://github.com/hansklav/Fractals-in-Oberon-07/tree/main/Dragon-curves First I suspected that a difference between Oberon's MOD operator versus BASIC's MOD and Python's % operators was the culprit, so I made a function REM to mimic them, but that had no effect. Then I pinpointed a problem in the way the Oberon V5 compiler handles an expression for certain values of its variables in my code. Please run the following two commands in Oberon V5, and behold that they unexpectedly give different results: MODULE TestDragon; (* hk 11 July 2024 *) IMPORT Math, Out; (* For Math.power see: https://github.com/hansklav/Oberon-07/blob/master/Math.Mod *) CONST pi = 3.1415926535; p = 4.0; (* order of dragon curve *) PROCEDURE Correct*; (* TestDragon.Correct *) (* correct result for x2 *) VAR h, x1, x2: REAL; s: INTEGER; BEGIN s := 0; x1 := 7.499998E-01; h := 2.500000E-01; Out.String("s = "); Out.Int(s, 2); Out.String(" h ="); Out.Real(h, 14); Out.Ln; x2 := x1 + h * Math.cos( (FLT(s) - p/2.0) * pi/2.0 ); (* <-- expression tested *) Out.String("x1 ="); Out.Real(x1, 14); Out.Ln; Out.String("x2 ="); Out.Real(x2, 14); Out.Ln; Out.Ln END Correct; PROCEDURE Incorrect*; (* TestDragon.Incorrect *) (* incorrect result for x2 *) VAR h, x1, x2: REAL; s: INTEGER; BEGIN s := 0; x1 := 7.499998E-01; h := Math.power(2.0, -p/2.0); (* the result for h from Math.power() is correct: *) Out.String("s = "); Out.Int(s, 2); Out.String(" h ="); Out.Real(h, 14); Out.Ln; x2 := x1 + h * Math.cos( (FLT(s) - p/2.0) * pi/2.0 ); (* <-- why incorrect result?? *) Out.String("x1 ="); Out.Real(x1, 14); Out.Ln; Out.String("x2 ="); Out.Real(x2, 14); Out.Ln; Out.Ln END Incorrect; END TestDragon. The first command gives the correct result (0.4999998), which can easily be verified by pasting the following line in https://www.wolframalpha.com/ : 7.499998E-01 + 2.500000E-01 * cos((0 - 4/2) * pi/2.0) But why the same expression in the second command gives a wrong result (0.6249998) for the same values of its variables as the first command escapes me. Could anyone give an explanation?? Because I cannot reproduce this incorrect behaviour using the OBNC compiler, I suspect a compiler error. Regards, Hans Klaver

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WinAos on ARM
by Hürlimann Bruno 09 Jul '24

09 Jul '24

ETH PlugIn Oberon for WindowsTM / WinAos 2.03 050530 on Windows ?? Version 6.2.9200 h@HEA43 Hello I work with WinAos and have switched to an ARM processor. Now the system is no longer stable. System functions such as Edit.Store lead to crashes. Is there an AOS version for ARM processors and how can I download this EXE file? Greetings Bruno Hürlimann

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Re (2): letter to ETHZ
by peter＠easthope.ca 09 Jul '24

09 Jul '24

From: Felix Friedrich <felix.friedrich(a)inf.ethz.ch> Date: Fri, 5 Jul 2024 16:31:00 +0200 > I listen to this channel and will forward your suggestions, ideas, > worries (etc.) to the responsible people where I can. From: "Skulski, Wojciech" <skulski(a)pas.rochester.edu> Date: Tue, 9 Jul 2024 13:40:38 +0000 > This page is like a monument. Truly minimalist in spirit and loaded > with useful information. I am hoping that the resources will always be > available to keep it online. To some extent, the present Web violates simplicity. Still, in parallel and subject to permissions, Wikisource is worth considering. Here are some precedents. https://en.wikisource.org/wiki/Author:Isaac_Newton https://en.wikisource.org/wiki/Author:Charles_Babbage https://en.wikisource.org/wiki/Author:Augusta_Ada_Byron https://en.wikisource.org/wiki/Author:James_Clerk_Maxwell https://en.wikisource.org/wiki/Author:Albert_Einstein Thx & Best Regards, ... P.L. -- VoIP: +1 604 670 0140 work: https://en.wikibooks.org/wiki/User:PeterEasthope

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Re: [Oberon] letter to ETHZ
by John Stout 09 Jul '24

09 Jul '24

I would certainly support this. While we can all have our personal copy it seems strange that ETHZ are removing this evidence of Professor Wirth's work. In their place I'd want to celebrate it! To my everlasting regret I never met Professor Worth (the only Oberon day I attended he did not!), but buying a copy of Algorithms + Data Structures = Programs in the 80s was one of the most important purchases in my computing career. John Stout On Fri, 5 Jul 2024, 11:00 , <oberon-request(a)lists.inf.ethz.ch> wrote: > Send Oberon mailing list submissions to > oberon(a)lists.inf.ethz.ch > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.inf.ethz.ch/mailman/listinfo/oberon > or, via email, send a message with subject or body 'help' to > oberon-request(a)lists.inf.ethz.ch > > You can reach the person managing the list at > oberon-owner(a)lists.inf.ethz.ch > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Oberon digest..." > > > Today's Topics: > > 1. Re: Oberon Digest, Vol 242, Issue 3 (Daniel Schmid) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 05 Jul 2024 08:15:08 +0200 > From: Daniel Schmid <daniel.schmid(a)bluemail.ch> > To: oberon(a)lists.inf.ethz.ch > Subject: Re: [Oberon] Oberon Digest, Vol 242, Issue 3 > Message-ID: > <c06b02f63b53a7a8026c2a47a6b449cdbefd4d20.camel(a)bluemail.ch> > Content-Type: text/plain; charset="utf-8" > > Dear Arthur > > Thanks for this great idea, which i would support. In a short we could > write (maybe an Email out of the oberon-list): > > ~~~ > Dear ETH-Management > Unfortunately, Prof. Dr. Dr. hc mult Niklaus Wirth passed away at the > beginning of the year. His honorable work leaves behind important > insights and results in the field of programming languages ??and > operating systems. This is particularly relevant with regard to further > digitization (see also ETH's strategy on digitization and excellence). > As interested international members of the Oberon List, we therefore > request that at least the website on Prof. Wirth's findings be > maintained (a webinar series on the topic would also be nice). > Yours sincerely > The Oberon List > ~~~ > > What do you (all) think about? > > regards > ds > > On Thu, 2024-07-04 at 12:00 +0200, oberon-request(a)lists.inf.ethz.ch > wrote: > > Send Oberon mailing list submissions to > > ????????oberon(a)lists.inf.ethz.ch > > > > To subscribe or unsubscribe via the World Wide Web, visit > > ????????https://lists.inf.ethz.ch/mailman/listinfo/oberon > > or, via email, send a message with subject or body 'help' to > > ????????oberon-request(a)lists.inf.ethz.ch > > > > You can reach the person managing the list at > > ????????oberon-owner(a)lists.inf.ethz.ch > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of Oberon digest..." > > > > > > Today's Topics: > > > > ?? 1. Re: Niklaus Wirth's personal web page (Arthur Yefimov) > > > > > > --------------------------------------------------------------------- > > - > > > > Message: 1 > > Date: Wed, 3 Jul 2024 13:51:16 +0300 > > From: Arthur Yefimov <artur.efimov(a)gmail.com> > > To: oberon(a)lists.inf.ethz.ch > > Subject: Re: [Oberon] Niklaus Wirth's personal web page > > Message-ID: > > ????????< > > CAJETpdj0E1DSSi6_tLOkuK5vB9KcdgO-X5BhaZEa36+xHXKnPA(a)mail.gmail.com> > > Content-Type: text/plain; charset="utf-8" > > > > Wait, can we try to force ETH to restore the page? > > The person just died this year and they are deleting the highly > > referenced > > and nice-to-use website? Those are just a few HTML and other files. > > > > Shall we write a collective letter to ETH. > >

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Re: [Oberon] OpenType and BBPort in A2.
by Jörg Straube 08 Jul '24

08 Jul '24

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OpenType and BBPort in A2.
by peter＠easthope.ca 07 Jul '24

07 Jul '24

Hi, When LinuxA2 rev.9799 is started from a console in Debian 11, these two lines appear in the report. X11 Display depth = 24 OpenType 0.45 BBPort /3.12.2004 eos, pl What is the significance of the 2nd? What is BBPort? Thanks, ... P.L. -- VoIP: +1 604 670 0140 work: https://en.wikibooks.org/wiki/User:PeterEasthope

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Re: [Oberon] Oberon Digest, Vol 242, Issue 3
by Daniel Schmid 05 Jul '24

05 Jul '24

Dear Arthur Thanks for this great idea, which i would support. In a short we could write (maybe an Email out of the oberon-list): ~~~ Dear ETH-Management Unfortunately, Prof. Dr. Dr. hc mult Niklaus Wirth passed away at the beginning of the year. His honorable work leaves behind important insights and results in the field of programming languages and operating systems. This is particularly relevant with regard to further digitization (see also ETH's strategy on digitization and excellence). As interested international members of the Oberon List, we therefore request that at least the website on Prof. Wirth's findings be maintained (a webinar series on the topic would also be nice). Yours sincerely The Oberon List ~~~ What do you (all) think about? regards ds On Thu, 2024-07-04 at 12:00 +0200, oberon-request(a)lists.inf.ethz.ch wrote: > Send Oberon mailing list submissions to > oberon(a)lists.inf.ethz.ch > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.inf.ethz.ch/mailman/listinfo/oberon > or, via email, send a message with subject or body 'help' to > oberon-request(a)lists.inf.ethz.ch > > You can reach the person managing the list at > oberon-owner(a)lists.inf.ethz.ch > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Oberon digest..." > > > Today's Topics: > > 1. Re: Niklaus Wirth's personal web page (Arthur Yefimov) > > > --------------------------------------------------------------------- > - > > Message: 1 > Date: Wed, 3 Jul 2024 13:51:16 +0300 > From: Arthur Yefimov <artur.efimov(a)gmail.com> > To: oberon(a)lists.inf.ethz.ch > Subject: Re: [Oberon] Niklaus Wirth's personal web page > Message-ID: > < > CAJETpdj0E1DSSi6_tLOkuK5vB9KcdgO-X5BhaZEa36+xHXKnPA(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Wait, can we try to force ETH to restore the page? > The person just died this year and they are deleting the highly > referenced > and nice-to-use website? Those are just a few HTML and other files. > > Shall we write a collective letter to ETH. >

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Re: [Oberon] Niklaus Wirth's personal web page
by Arthur Yefimov 03 Jul '24

03 Jul '24

Wait, can we try to force ETH to restore the page? The person just died this year and they are deleting the highly referenced and nice-to-use website? Those are just a few HTML and other files. Shall we write a collective letter to ETH.

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