Squeak-dev April 1999

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130 participants
319 discussions

Re: Squeak -> Objective-C translation
by Marcel Weiher 08 Apr '99

08 Apr '99

This looks like a job for the plugin interface. The Objective-C translator could make plugin creation much easier, but there would have to be some additional support in order to make it happen. It really is at an early stage right now, but with some help from the community, I think it could become really helpful. Marcel Begin forwarded message: > I fear that I will start coding, develop a strong liking for Morphic, get > close to finishing the apps, and then discover that I don't have enough > graphics speed to use them effectively. At that point I would, of course, > run back to VW, again. That's a painful prospect. > > So, somebody, please help me speed this thing up. I have some time to spend > on this.

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More on FilterStreams
by Marcel Weiher 08 Apr '99

08 Apr '99

Hi Andy, your pipes and filters implementation looks nice, however, it really doesn't have that much to do with FilterStreams (though you did reuse that name despite pounding me for it earlier, grmph..). What you are doing is faithfully re-creating UNIX pipes and filters; FilterStreams are an application of the pipes and filters *architectural pattern* that is purposely different from the UNIX model. It goes beyond it in some respects, and is decidedly simpler in others. It is simpler in that the base-model uses a simple push-only model that is sufficient for most uses and makes both the core implementation and all subsequent filters simpler. This doesn't restrict generality because buffering and pull-based processing can be provided via trivial adaptors (so placing FilterStreams into your Pipe presents no problem). It goes beyond a simple pipe and filter model in that it uses the double-dispatching strategy of a Visitor pattern to integrate the individual filter-stages with normal Smalltalk messaging. Each concrete filter essentially represents a 'generic' operation such as #printOn:,#storeOn: or #fullDrawOn: that involves a traversal, an operation and some target or state carrying object. Like other Visitors, FilterStreams allow reuse of traversal and operation code, thereby allowing easy addition of new operations. Think of a #debugPrintOn:. There's quite a bit more I could say. Maybe if there are specific questions... Did you get my responses to your criticism? I think I addressed your points there. Anyway, what you're doing is really quite different from what I've been doing. Regards, Marcel

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ICQ for squeak?
by Dino 08 Apr '99

08 Apr '99

Hello, I wonder if there is ICQ for squeak... ?? If not, I'll try and make one... but I'd rather not waste my time if there is already one out there. thanks. -- Dino

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Re: Self/Kansas pointers
by jecel＠lsi.usp.br 08 Apr '99

08 Apr '99

Ivan Brusic wrote: > Does anybody have any pointers to the Self/Kansas system? The only > information that I am able to currently find is the Self tutorial, which > contains only one page about Kansas. You will probably find this paper interesting: http://self.sunlabs.com/papers/self4.0UserInterface.html And there are some other UI papers at: http://self.sunlabs.com/papers/papers.html but most of them describe pre-Morphic UI experiments. -- Jecel P.S.: sorry about the messy formatting - anything I send to this list simply vanishes without a trace unless I telnet directly to c.cs.uiuc.edu and send it in "manually" like I am doing now....

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Re: RE: Browser alternatives
by Bob Arning 08 Apr '99

08 Apr '99

On Tue, 6 Apr 1999 17:24:29 -0400 "Norton, Chris" <chrisn(a)Kronos.com> wrote: >Bob - This browser is seriously cool! The driller stuff you built with drag >& drop methods, etc.. is a huge addition to Squeak. > >Thanks so much! Chris, You are quite welcome. I am planning another release in the not-too-distant future. Do you have any ideas? Cheers, Bob

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Re: ICQ for squeak?
by "Gran" Hultgren 07 Apr '99

07 Apr '99

---Dino <gte949e(a)prism.gatech.edu> wrote: > Hello, > > I wonder if there is ICQ for squeak... ?? > > If not, I'll try and make one... but I'd rather not waste my time if there is > already one out there. A friend of mine reverse engineered the ICQ protocol and wrote an ICQ client (and AOL Messenger capable too) in Java. I could ask him for the code if anyone wants it. Drop me an email. regards, Gran === Gran Hultgren, gohu(a)rocketmail.com, icq#:6136722 GSM: +46 709 472152, http://195.22.65.4 "First they ignore you. Then they laugh at you. Than they fight you. Then you win." -- Gandhi _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com

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Re: Self/Kansas pointers
by Peter William Lount 07 Apr '99

07 Apr '99

Hi Ivan, Yup. Check out: http://www.sunlabs.com/research/distancelearning/kansas.html It looks like an interesting project. Peter W. Lount peter(a)smalltalk.org http://www.smalltalk.org ---------- From: Ivan Brusic <ivan(a)cc.gatech.edu> To: squeak(a)cs.uiuc.edu Subject: Self/Kansas pointers Date: April 7, 1999 12:31 PM Does anybody have any pointers to the Self/Kansas system? The only information that I am able to currently find is the Self tutorial, which contains only one page about Kansas. Ivan -- Ivan Brusic | "Computers are nothing but a perfect Graduate Student | illusion of order" - Iggy Pop College of Computing & GVU Center | Georgia Institute of Technology | E-mail: ivan [at] cc.gatech.edu

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Squeak -> Objective-C translation
by Marcel Weiher 07 Apr '99

07 Apr '99

Hi folks, I've finally started work on a version of the C-Translator capable of producing Objective-C. There are several applications I am targeting: (1) using Squeak to develop/prototype Objective-C code (2a) using Objective-C as an intermediate plug-in language that is semantically closer (2b) translating larger portions of Squeak libs to dynamically bound native code and (3) making VM/Interpreter code OO to allow for better integration, easier experimentation and multiple interpreters. I couldn't see a way to easily subclass the CCodeGenerator, so I've been page-faulting code into a new extensible code-generator based on FilterStreams that will then support subclasses for both Objective-C and plain C generation. As far as I can tell, these should take less space than the current C-generation support due to some refactorings and the FilterStream savings. Marcel

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Self/Kansas pointers
by Ivan Brusic 07 Apr '99

07 Apr '99

Does anybody have any pointers to the Self/Kansas system? The only information that I am able to currently find is the Self tutorial, which contains only one page about Kansas. Ivan -- Ivan Brusic | "Computers are nothing but a perfect Graduate Student | illusion of order" - Iggy Pop College of Computing & GVU Center | Georgia Institute of Technology | E-mail: ivan [at] cc.gatech.edu

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RE: Weak support for directory manipulation in Squeak (?)
by Raab, Andreas 07 Apr '99

07 Apr '99

Stephen, > In porting the Minnestore OODB to Squeak, I'm running into problems with > directory manipulation. There are methods in class FileDirectory for > creating > directories, but not for deleting them (FileDirectory deleteFileNamed: > won't > work) or asking whether a directory exists (FileDirectory fileExists: > answers > false), and there's also no method for asking whether a given name is a > directory or a normal file (though this can be written using existing > methods). > Have a look at FileDirectory>>fileAndDirectoryNames vs. FileDirectory>>fileNames. From both it should be easy to derive a #directoryNames or #isDirectory: method. Andreas -- PLEASE NOTE NEW EMAIL ADRESS! +===== Andreas Raab ========= (andreasr(a)wdi.disney.com) ==+ | Walt Disney Imagineering Phone: +1 818 544 5016 I I Glendale, CA Fax: +1 818 544 4544 I +======< http://isgwww.cs.uni-magdeburg.de/~raab >========+

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