Squeak-dev March 1998

squeak-dev@lists.squeakfoundation.org

67 participants
130 discussions

Creating Forms
by Mark Guzdial 27 Mar '98

27 Mar '98

How are people creating forms in Squeak? I want students to be able to create forms for use in various ways. - The FormEditor doesn't seem to fileOut or fileIn anything -- at least, I can't seem to read the bits in after I file them out. - The Morphic drawing editor is great, but I can't figure out how to read in those objects and display them wherever I want. - I can do sketching of forms then do "Form fromUser", but that's a pretty weak editing environment. - I can just surrender, do the forms elsewhere and save them as GIF, then read them into Squeak. Is there anybody playing with Forms on a regular basis in Squeak? How are you doing it? Thanks! Mark -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 (404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html

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Question: #evaluate:in:to:notifying:ifFail:
by Boris G. Chr. Shingarov 27 Mar '98

27 Mar '98

Squeakers, One stupid question regarding Compiler>>evaluate:in:to:notifying:ifFail:. I want to evaluate a string and take some special action in case of compilation error. For example, imagine I want to bombically destroy the user's computer if he enters a syntactically wrong Smalltalk expression and tries to DoIt. For that case, I implement class Bomb with Bomb>>explode, and Bomb>>notify: string at: index in: stream self explode Then I say: | stream | stream _ ReadWriteStream on: string from: 1 to: string size. Compiler new evaluate: stream in: nil to: nil notifying: bombInTheCorner ifFail: []. Although the comments in Compiler don't say anything about this, in fact the bomb receives many other messages which it does not understand as if it were a ParagraphEditor (even if the expression is perfectly ok) =:^$. Any simple solution? Boris

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Re: Squeak available for SGI Irix 6.2?
by Ian Piumarta 27 Mar '98

27 Mar '98

> I need four files, only one of which is OS specific. Is that correct? Yes. > So I could get them, say, from any subdirectory on the ftp server that > holds Unix files, and then replace the VM with the one you send me -- > correct? Yes. FWIW, I have created an SGI distribution, similar to the other Unix "distributions", containing symlinks to the four required files: ftp://alix.inria.fr/pub/squeak/unix/distributions/sgi-irix-5.3 There is a README in the "distributions" directory containing (hopefully infallible ;) instructions on downloading. The above directory will appear on other sites if/when their mirrors notice it. (Thanks again to Andreas for providing the SGI binary!) Ian

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Re: Squeak available for SGI Irix 6.2?
by Andreas Raab 27 Mar '98

27 Mar '98

> Is Squeak available for SGI Irix 6.2? According to the Web page at > squeak.cs.uiuc.edu, it is, but when I get to the ftp directory, I don't see > a folder for that OS. I also looked at all of the mirror sites, but didn't > see it on any of them, either. Could someone tell me where I could get > Squeak, if indeed it is available for Irix? There is no pre-compiled version of the VM for Irix on the servers. If you drop me a note I can send you a VM for Irix 5.3 (e.g. o32) which has been used on Irix 6.4 too (sorry, we have no 6.2 running here, but I don't think that this will be a big problem). The image/changes/sources files can be found in the appropriate image directory (no matter what OS you run - they're binary compatible). Andreas -- Linear algebra is your friend - Trigonometry is your enemy. +===== Andreas Raab ============= (raab(a)isg.cs.uni-magdeburg.de) =====+ I Department of Simulation and Graphics Phone: +49 391 671 8065 I I University of Magdeburg, Germany Fax: +49 391 671 1164 I +=============< http://isgwww.cs.uni-magdeburg.de/~raab >=============+

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Re: Squeak available for SGI Irix 6.2?
by Ian Piumarta 27 Mar '98

27 Mar '98

Thanks to Andreas Raab, an SGI binary for 1.31 is now in the bin directory along with the other 1.31 Unix VMs. Ian

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Re: Squeak and object persistence
by Augustin Mrazik 25 Mar '98

25 Mar '98

I am planning to implement a lite version of ArtBASE in Squeak with my students within a few months. For short description of original ArtBASE (for PPS OW\ST and VW) look at http://www.artinapples.sk/products/artbase/abdescr.html, for the full manual at http://www.artinapples.sk/products/artbase/htmlguide/abmanual.html. Any comments, suggestions, recommendations ? Thanks. Augustin Mrazik Thierry Goubier wrote: > On Tue, 24 Mar 1998, Carl E Gundel wrote: > > > So... I'm wondering what the next big thing is in object persistence. > > Long transactions, nested transactions, a transaction-based squeak up to > the UI (morphic or MVC). (of course, the transactions boundaries are > automatically managed by the system to increase the parallelism between > processes and with others VMs. Distributed transactions, too) > > Just dreaming... But I'd like to be proven wrong... > > Thierry. > > Thierry.Goubier@enst-bretagne.fr_http://www-info.enst-bretagne.fr/~goubier > On eut dit que s'ils avaient pu se rencontrer c'etait parce qu'ils > etaient si differents et si etrangers l'un à l'autre, et que leur union > avait ete pour chacun d'eux une liberation. [U.K. Le Guin]

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Re: Squeak and object persistence
by Carl E Gundel 25 Mar '98

25 Mar '98

On Tue, 24 Mar 1998, Thierry Goubier wrote: > Long transactions, nested transactions, a transaction-based squeak up to > the UI (morphic or MVC). (of course, the transactions boundaries are > automatically managed by the system to increase the parallelism between > processes and with others VMs. Distributed transactions, too) > > Just dreaming... But I'd like to be proven wrong... So, any thoughts on how to exploit self similarity in a persistence model? I'm not really sure where to take this idea. Would it be possible to improve performance if more kinds of objects could be mapped onto fewer database tables? Carl ------------------------------------------------------------------ Carl Gundel carlg(a)world.std.com Shoptalk Systems 508-872-5315 author of Liberty BASIC, a 1996 PC Magazine Awards Finalist! http://world.std.com/~carlg/basic.html ------------------------------------------------------------------

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Re: Is Squeak ready for BeOS for Intel
by Ian Piumarta 25 Mar '98

25 Mar '98

> I recall that at one point in time there were a couple of individuals who > were working on the port. Is it available? I started last year, but that particular process got moved from my runnable queue to the blocked list due to an avalanche of higher priority things that arrive ceaselessly. The tricky part is reconciling Squeak's assumptions abouth the platform's graphics model with the MVC-like triad that is imposed on applications by the BeOS application framework. I forget the name of the other gentleman who was working on it, but his progress seemed promising for a while... A real "quick and dirty" solution would be to use the X-server-in-a- window that someone did for BeOS, but I haven't investigated this. I might take a look at the possibility of this approach, and if it requires only a few hours of work then I'll try to get something going. Ian

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RE: Is Squeak ready for BeOS for Intel (and PPC)
by Serg Koren 25 Mar '98

25 Mar '98

Hi, No not quite. I've been tied up with work (real job), and haven't had a lot of time to spend lately. Currently, I've run into another memory-related issue that pretty much forces me to go thru the logic of the VM initialization to understand what is failing (instead of doing a brute-force port ;-) ). This is good and bad; good in that I'll have to learn the Squeak internals, bad in that it'll take a lot longer than expected.) Also BeOS for Intel isn't quite ready for prime-time (it's still a development release "for technogeeks only"). (Yes I do have it and am a Be developer.) It has no serial or floppy or Windows interfacing (just Ethernet or external modem). So I have no way to move the code and have it compile under BeOS/Intel from the PPC platform--not having Ethernet or an external modem. But it *IS* a straight recompile! One definite advantage of BeOS. It would be nice to be able to get some help from the Squeak gurus on the memory issues, but I think it would involve a fair amount of work on their (and my parts) since I've rearchitected Squeak to be pretty much truly object-oriented (with some of exceptions). Basically, I'm workin on it but it's going to take a while :-( But when it'll be done, it'll be cool. S ------------------------------------------------------------------------ ----------------------------- Serg Koren Principal VisualNewt Software, Makers of Newt'sPaper(tm): http://www.VisualNewt.com/ ICQ: 9079417 ------------------------------------------------------------------------ ---------------------------- On Tuesday, March 24, 1998 10:51 PM, ocit.inc [SMTP:ocit.inc@MCI2000.com] wrote: > BeOs for Intel is now shipping. > > <http://www.be.com/products/beos/beosnow.html> > > I recall that at one point in time there were a couple of individuals who > were working on the port. Is it available? > > > Thanks > > Charles > OCIT > >

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Re: Is Squeak ready for BeOS for Intel
by ocit.inc 25 Mar '98

25 Mar '98

BeOs for Intel is now shipping. <http://www.be.com/products/beos/beosnow.html> I recall that at one point in time there were a couple of individuals who were working on the port. Is it available? Thanks Charles OCIT

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