Self-interest March 2000

self-interest@lists.selflanguage.org

6 participants
6 discussions

Self in Java?
by Randy Smith 04 Apr '00

04 Apr '00

Anyone care to comment? ------------- Begin Forwarded Message ------------- From: "Dr. Joerg-Volker Mueller" <jv.mueller(a)lis.lineas.de> To: <randall.smith(a)Sun.COM> Subject: Self in Java? Date: Mon, 27 Mar 2000 13:22:25 +0200 Dear Mr. Smith, we are thinking about implementing a small object-oriented language for porting our user interface to multiple platforms. We have a graphical user interface that is generated dynamically out of metadata information. We would like to offer a GUI for several PDAs which obviously do not have much memory. So we need a small-footprint language to send over to the client which constructs the GUI and offers some small input validation facilities. Its main task is to build and control the user interface components written in Java. During my PhD work here at the Technical University of Braunschweig I came across your work on Self. Fortunately there are still some papers on the Sunlab Site, but the current implementation you use seems to be either for the Mac or Sun Solaris. It seems to be written in C/C++? So my question is: Do you have a (small!) Self interpreter written in Java? If not: Would it be difficult to write one? Thank you for helping. Best regards, J.-V. Müller ---------------------------------------------------------- Dr. Jörg-Volker Müller Tel: +49 531 28150-41 mailto:JV.Mueller@lis.lineas.de LINEAS Integral Software GmbH Theodor-Heuss-Str. 1 D-38122 Braunschweig, Germany Tel: +49 531 28150-40 Fax: +49 531 28150-44 http://www.lineas.de/lis mailto:info@lis.lineas.de ---------------------------------------------------------- ------------- End Forwarded Message -------------

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22 Mar '00

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Re: nice job!
by Randy Smith 17 Mar '00

17 Mar '00

> > David Ungar wrote: > > Since you asked, it was Randy Smith who conceived of and put together > > this tutorial. > > I thought so. Congratulations (5 years too late :-) Randy! > Thanks to you both. In keeping with the Kansas/Oz metaphor, I was calling this the "Yellow Brick Road" tutorial. This particular path to enlightenment would undoubtedly feature several visits to the Emerald Debugger. > On a related topic, where did the famous "3D buttons" now universally used in > GUIs come from? I have never seen it in anything older than ARK, so I have > always assumed that Randy invented it and everyone copied from him (though > NeXTStep, most likely). The "embossed text" thing was neat too. > Thanks again. I'm sure the idea was pretty inevitable, but as far as I know, ARK was the first place 3D buttons appeared. You have to remember in those days just using a mouse was a weird idea. In user studies we often had to expect a 15 - 30 minute lead time before subjects would get comfortable with the "little box on the table moves the arrow on the screen" concept!

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nice job!
by Jecel Assumpcao Jr. 16 Mar '00

16 Mar '00

I was reading the reports on the SqueakEnd (which is over, but Camp Smalltalk is happening right now! No, I didn't go to either one) at: http://minnow.cc.gatech.edu/squeak/1199 One thing that seemed to be commented a lot was how Squeak needs to improve its "out of the box experience". That is, the way the image is distributed now it is too easy to mess things up and get lost before you get very far, and it is too hard to get an idea of what it is all about by yourself. That got me thinking about the great job that was done in Self 4.0. The first screen just shows you how to get around in Kansas and add remote windows. It also invites you to navigate to the right where a pretty picture explains how to use the mouse. This second screen has directions for the various ways you can explore the system, including a simple and effective tutorial. I don't know who to congratulate for this (or if everyone shares my positive impressions), but the Squeak folks could do a lot worse than to copy it. While they don't have Kansas, some kind of "multipage hyperbook morph" might do the job nearly as well. -- Jecel

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Clustering in Self ?
by José Baltasar García Perez-Schofield 09 Mar '00

09 Mar '00

Hi, Selfies. I do apologise because of interrupt this "low-level, implementation" discussion, but I have a philosphycal question about Self. The matter is that Self can be considered a persistent language since it has its objects "living" in the Self world among executions of the Self environment. In many persistent languages, clustering techniques are applied to the persistent store (the world in Self), grouping together objects that are close one each other. (1) For example, "close" can be defined in terms of inheritance relations, or in terms of objects pointed by another objects ... or even combinations of this two considerations. The question is: does Self follow any of this techniques ? The central matter of the question is that, as far as I know, hte minimal unit of storage in Self is the slot, so, apparently, the "object semantic", is lost. Are the slots of the same object grouped together, for example ? Thank you in advance. Salud ! jose (1) Excuse me if anyone know about this term. -- ============================================================== PBC - José Baltasar García Perez-Schofield *jbgarcia(a)uvigo.es* Departamento de Lenguajes y Sistemas Informáticos Universidad de Vigo - Spain

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Java and Self revisited
by jason＠netgenics.com 03 Mar '00

03 Mar '00

Hi all, Pardon my revisiting the whole JSelf issues, but I thought this article might be of interest to some people on this list. The title is "Kawa - Compiling Dynamic Languages to the Java VM." http://sourceware.cygnus.com/kawa/papers/Freenix98-html/ >From the summary: "Kawa uses an interpreter only for "simple" expressions; all non-trivial expressions (such as function definitions) are compiled into Java bytecodes, which are emitted into an in-memory byte array. This can be saved for later, or quickly loaded using the Java ClassLoader. Kawa is intended to be a framework that supports multiple source languages. Currently, it only supports Scheme..." Jason

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Self-interest March 2000