Squeak-dev May 2000

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137 participants
680 discussions

Re: Karel the Robot
by Eric Scharff 31 May '00

31 May '00

At 5:22 PM +0200 5/31/00, Stephane Ducasse wrote: >Does anybody have experience with Karel the robot for teaching programming? > > http://www.mtsu.edu/~untch/karel/ > >Does anybody read the book? is it worth to buy it? >Does somebody thought of implementing this is Squeak? >May be not exactly ;) > >Stef I don't have experience teaching with Karel, but I do have some experience using it. When I was in elementary school in the 1980s we used a system (very probably) based on Karel as an almost-first introduction to programming. Having already studied Logo first, the Karel tool we had was pretty simple. I never read the book myself, but I found the programming exercises a whole lot of fun. Upon reflection, I don't know that Karel taught me something that my other early programming experiences didn't, but that doesn't mean it was not valuable. Isn't Wonderland almost "Karel Complete"? :) -Eric

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[BUG?][FIX?] Class>>rename:
by Bert Freudenberg 31 May '00

31 May '00

In Class>>rename:, if the name is in Undeclared, the class is not renamed, although the notifier suggests it should be renamed anyway. I'd say that's a bug (just had that problem). Fix attached. Any objections? -- Bert

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Karel the Robot
by Stephane Ducasse 31 May '00

31 May '00

Hi Does anybody have experience with Karel the robot for teaching programming? http://www.mtsu.edu/~untch/karel/ Does anybody read the book? is it worth to buy it? Does somebody thought of implementing this is Squeak? May be not exactly ;) Stef Stephane DUCASSE (ducasse(a)iam.unibe.ch) http://www.iam.unibe.ch/~ducasse/ "if you knew today was your last day on earth, what would you do different? ... especially if, by doing something different, today might not be your last day on earth" Calvin&Hobbes University of Bern, Institut fuer informatik and Mathematik IAM-SCG, 10 neubruckstrasse, CH-3012 Bern, Switzerland.

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Re: [Question] SystemWindow testing
by Bob Arning 31 May '00

31 May '00

On Wed, 31 May 2000 15:24:38 +0200 Karl Ramberg <karl.ramberg(a)chello.se> wrote: > I'm testing the following code in a method: > > test _ self world submorphs first. > test = SystemWindow > ifTrue:[test passivate] > >but it never triggers. When I inspect test it say's it's a SystemWindow('Transcript') etc. >What else is test than a SystemWindow ? Karl, The code you wrote is asking if test (some kind of morph) is equal to SystemWindow (a CLASS). Obviously they are not. If this is just hacking around code, then you can do test isKindOf: SystemWindow test isMemberOf: SystemWindow test class == SystemWindow If, however, this is real code, forget what I just said and try to use a message that SystemWindow implements one way and other morphs implement another. Asking objects about their class reduces the flexibility we have to substitute arbitrary objects as long as they support a particular protocol. This makes your code less useful in the long run. Cheers, Bob

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Re: [Question] SystemWindow testing
by Steven Elkins 31 May '00

31 May '00

Karl Ramberg wrote: > > Hi, > I'm testing the following code in a method: > > test _ self world submorphs first. > test = SystemWindow > ifTrue:[test passivate] > > but it never triggers. When I inspect test it say's it's a SystemWindow('Transcript') etc. > What else is test than a SystemWindow ? Probably test is an instance of the class SystemWindow, i.e., not equal. There's a protocol called 'class membership' on the instance side of Object that probably has what you mean, something like #isKindOf: or #isMemberOf:. HTH, Steve

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Sugestion: Small change to unix VM
by Stefan Matthias Aust 31 May '00

31 May '00

Hi! I'd like to suggest the following change to the sqXWindow.c file of the current (2.8a) VM. I always wondered why the "DEL" key didn't work and eventually found the solution in the VM support code. Somebody explicitly removed it. That's bad. Or as my collegue said, if that key were suppost to work like backspace, they didn't had printed "DEL" on it. Actually I changed the code so that Crtl+Space and Alt+Space work as on other platforms. *** sqXWindow.c Wed May 31 15:37:52 2000 --- sqXWindow.c.orig Wed May 31 15:37:28 2000 *************** *** 1289,1296 **** keystate= buf[0]; ! if (keystate == 0) ! keystate= 32; if (nConv == 0 && (keystate= translateCode(symbolic)) < 0) return; /* unknown key */ --- 1289,1296 ---- keystate= buf[0]; ! if (keystate == 127) ! keystate= 8; if (nConv == 0 && (keystate= translateCode(symbolic)) < 0) return; /* unknown key */ bye -- Stefan Matthias Aust Projektleiter/Softwareentwicklung Baltic Online Computer GmbH, Alter Markt 1-2, 24103 Kiel Fon: +49 (0) 431-54003-0 Fax: -99 http://www.baltic-online.de

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Re: 4th Estate
by Paul McDonough 31 May '00

31 May '00

Hi Michael, Coincidentally I'm meeting with folks tomorrow to get the rebuild of our web site under way. The old, old, obsolete version is at www.4thEstate.com. Please feel free to contact me/us if you've questions. Cheers, Paul ---------- >From: "Michael_Chean" <Michael_Chean(a)email.msn.com> >To: <squeak(a)cs.uiuc.edu> >Subject: 4th Estate >Date: Tue, May 30, 2000, 11:25 PM > > Hi: > > Does anyone have the web address for the 4th estate? I was looking at their > site not to long ago, but can't find my bookmark for it. > > >

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DivX ;-) codec
by Karl Ramberg 31 May '00

31 May '00

While reading some other stuff than the squeak mailing list I found this link www.mac.st where a DivX ;-) movie codec can be found. They claim it will be the mp3 of movies (!). That remains to see but maybe a primitive for Squeak will give moving image a better implementation than the current ? I really don't know how to implement this but since I've done quite a few video films etc. I would love be able to continue on working with moving images in Squeak. Karl

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Re: www.squeakworld.com!
by Stefan Matthias Aust 31 May '00

31 May '00

Regarding the web infrastructure, do you know Midgard (www.midgard-project.org). I don't suggest to use that tool, but I like the site layout and the ideas behind that tool. So I recommend to check it out. It's similar to ZOPE (www.zope.org) in its ideas and a free, opensourced web site application builder with an easy to use interface, built upon apache, php and mysql. If we could create something like this for Squeak, that would be great :-) bye -- Stefan Matthias Aust Projektleiter/Softwareentwicklung Baltic Online Computer GmbH, Alter Markt 1-2, 24103 Kiel Fon: +49 (0) 431-54003-0 Fax: -99 http://www.baltic-online.de

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Re: www.squeakworld.com!
by JArchibald＠aol.com 31 May '00

31 May '00

=> 5/31/00 4:33:30 AM, gohu(a)rocketmail.com => << I ... will soon post a summary of responses + a "content proposal" + (hopefully) a team list with some proposed "roles" like for example "site administrator", "column writer", "interested in writing articles", "graphic artist" etc. >> Mark, I would be interested in a role as "site administrator". Also "news commentator" is also a role where I might be able to add something. Writing articles takes me much too long; others are on to new topics by the time I get an exposition done. And although I consider myself a dynamite graphic artist in ClarisWorks (now AppleWorks), I don't think that counts :-o. << (feel like some political campaign manager... yuk) >> I guess you're now assuming the role of "political campaign manager" (certainly needed here); try to grin and bear it :-). Cheers, Jerry. ____________________________ Jerry L. Archibald systemObjectivesIncorporated ____________________________

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