Squeak-dev February 2003

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195 participants
766 discussions

Re: [ANN] Ma client server
by Chris Muller 04 Feb '03

04 Feb '03

> As far as I understood the documentation, the following should send 'aaa' and > > receive 'Hello world!'? > > MaServerSocket new listenOn: 12345 answer: [ :requestByteArray | 'Hello > world!' ]. > mySocket _ MaClientSocket hostAddress: #(127 0 0 1) port: 12345. > mySocket sendData: #(65 65 65) > > Regards, Markus Oops.. Honestly, I haven't tried it with Strings, but it seems like it *should* work. Just in case, I've changed the documentation to convert that 'Hello World' to a ByteArray (#asByteArray) until I can test that. The other thing is.. I haven't actually tried to connect to a Socket listening in the *same* image, only different images. It may work, I just don't know for sure. I hope this answers your question! Did you find an issue? I think also included a couple of additional files in the SAR, clientTest.ws and serverTest.ws. The client sends a byteArray, the server reverses it and sends it back, which the client then verifies. Regards, Chris __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

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[ANN] Ma client server
by Chris Muller 03 Feb '03

03 Feb '03

This is a stable framework for writing client-server programs. It offers two-layers of usage from which you can choose. 1) send and receive ByteArray's or 2) send and receive objects. Using the first layer, the only thing you're required to provide the framework is a one-argument block that answers the "response" ByteArray given the "request" ByteArray (the argument). This means you can actually write a server program in one line of code. Using the object layer requires one additional piece of information, for details see http://minnow.cc.gatech.edu/squeak/2978. The server-side of the framework manages scalability by queueing requests and sending responses in background Processes. There is also event support for each step along the way, which Magma uses for gathering statistics about the various queues, but its use isn't required, so as to preserve the utter simplicity. Enjoy.. - Chris __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

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[FIX][3.2][3.4][3.5] FileList and SubMenu
by Thierry Reignier 03 Feb '03

03 Feb '03

"Change Set: FileList-SubMenu-TREG Date: 2 February 2003 Author: Thierry Reignier StandardFileStream: bug: In a FileList if one updates a file and saves, ones is asked to override or save into a new file. If one cancels then a debugger shows up. correction: if one cancels, bring one back to the edit pane MenuMorph: bug: after adding a sub menu and upon bringing up the menu, a debugger shows up, claiming that arguments are not set. correction: if arguments are not set, do nothing" _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail

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Re: Testers required: Windows Setup for Squeak
by S.J.Chun 03 Feb '03

03 Feb '03

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Closures
by shane＠shaneroberts.com 03 Feb '03

03 Feb '03

Since becoming re-interested in Smalltalk (after 20 years) a few days ago, I keep running across references to "closures", "block closures", and "block closures in modern Smalltalk". Can anyone point me to information explaining these terms/issues? Also, for years in the 80s and early 90s, any references I read regarding Smalltalk stated that it was too inefficient and not useful for practical applications. I once flew to Los Angeles where I had an appointment to evaluate a Xerox Dolphin workstation running Smalltalk. This was about 1983, and I believe the Dolphin was priced at upwards of $100,00.00. I requested a small example of Smalltalk programming. The representative was tentative about what sort of example to show me, so I said, "How about a simple loop that prints numbers from 1 to 1000." So a loop was written and executed. It never got to 1000, it was TOO SLOW! That about cinched it for me. I also studied the Smalltalk implementation details published at that time (Addisson-Wesley whatever), actually I got pre-publication editions of the book for some reason. I found it fascinating but felt there were to many layers to the message processing (inheritance hierarchy), for the system to perform efficiently enough. The other thing that always bugged me was the "image". It all seemed so tightly coupled, I couldn't figure out how you would "share programs" or separate out "data files." I'm sure this is all ancient history to those on the list. These issues have long been debated and put to rest, but it is amusing reading about "how modules should work" after all this time. My first impression about the image file was apparently on target, since it is still biting your ass after all these years. Anyway, all this aside, I ran Croquet today, which kept crashing. Apparently the network collaboration connection software isn't working for Windows yet. But I was able to run all the built in "toys", that are from Squeak. So I did an experiment. I ran everything I could in the Morphic world, all at once. Spinning 3D block, ant hill, termites, chess, crawling blob, music synthesizer, clock, and mp3 player playing a symphony. It all worked amazingly. No crashing, skipping, wobbling. The frame rate dropped to 50 ms, but everything continued to work impressively. I let it run for hours. I was mightily moved. I have also done the basic programming tutorials. The first tutorial I did I think locked up my image. The tutorial said "pick any category, like Kernel-Object" for example. So I did but when I wrote "Hello World" my image went into never never land. But then I did the banking tutorial, and the animation, and it worked great. So easy. And then in the animation tutorial I was reprogramming the object, during its execution. Mind blowing. I have been researching software systems and languages during the last year, looking for the right platform to build a "really" user friendly and "personal" software environment for naïve computer users (most people). I have looked at Forth, Plan9, Inferno, Java, Python, the Unices (I have programmed in C and Unix for 20 years), and pulling my hair out trying to find a starting point for something portable, reliable, and "doable." The nasty complexities of trying to find a reasonable starting place, or platform have been overwhelming. But now with Squeek I think I may have finally stumbled onto it. Squeak feels like what I was hoping Forth and Smalltalk would be 20 years ago. When I got a Mac (pre-ordered before they were on the street), I was dissappointed when it did not even do multi- tasking. I was already programming for Unix, so I could not comprehend a multi-window system, that did not multi-task, what's the point? More ancient history... I've been waiting for the computer industry to grow up for 25 years, and we are still using hand crank starters, spark advance knobs on the steering wheel, manual chokes, and we have to wear driving gloves, goggles, and helmets before we step on the gas. Now I'm getting too old, I can't wait any more. Something has got to be done!!!! So we'll see if I can commit to Squeak and get serious with it... Thanks, Shane

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[GOODIE] The cellular automaton used in the introduction of "A new kind of science" (Stephen Wolfram)
by Markus Gaelli 03 Feb '03

03 Feb '03

... is now on Squeakmap. ("NewKindOfScienceIntro") It is quite slow and a model of a CA would be needed and rule 30 could be used to create a random-generator as Wolfram does it in Mathematica, and a real introduction would be nice, and a project, and, and, and...any more volunteers? Markus

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[GOODIE] SmaCC Smalltalk Compiler-Compiler
by Markus Gaelli 03 Feb '03

03 Feb '03

Hi folks, John Brant and me worked at the same time translating SmaCC to Squeak last week, without knowing from each other, I should have asked first... :-/ He didn't finish the user-interface but did a better job than me on the model- conversion. So we ended up in using his translation of the model and my (still not as good as the VW-version but usable) user-interface. I have put up the new combined effort on SqueakMap, one map for the development and one map for the runtime of SmaCC-Parsers. (See SmaCC*...) Here is a little description of John concerning the dependencies: Runtime -> nothing Example parsers -> Runtime Development -> Runtime & RB UI -> Development Tests -> Development The development-package is self contained, but if it finds a refactoring browser already present in the image, it does not load its (maybe older) own one. If there are any problems, let me know, Markus

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Add to a collection
by Janet Abdul-Karim 03 Feb '03

03 Feb '03

I created a subclass to ordered collections. I am trying to add objects to the new class and then print it to make sure they are in there. I add one object it prints but when I add another object and print it only prints the first object i added sample code to add to list. account: aAccount "Add an account to the portfolio" self isNil ifTrue:[self add: aAccount] ifFalse:[ self addLast: aAccount]. code to print list. ccounts "Returns the accounts for the portfolio" self do:[:element|^element number]. --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now

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Re: New mailing lists: squeak-e and squeak-ja
by cg＠cdegroot.com 03 Feb '03

03 Feb '03

> Cees, have you gotten the direct emails from me? > No. Probably TMDA is messing up somewhere, I'll whitelist you manually. -- Cees de Groot http://www.cdegroot.com <cg(a)cdegroot.com> GnuPG 1024D/E0989E8B 0016 F679 F38D 5946 4ECD 1986 F303 937F E098 9E8B Cogito ergo evigilo

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comparing objects in a collection
by Janet Abdul-Karim 03 Feb '03

03 Feb '03

I am trying to find a certain value in a collection. does something if true or does something if false and for some reason it always evaluates to false and I know its there. Any help would be great sample code. findAccount: accountNumber "Find the account with the argument number" self do:[:element | element number == accountNumber ifTrue:([Transcript show: element;cr]) ifFalse:([Transcript show: 'No such account exists in this portfolio';cr])]. element is an object that has number as a method --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now

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