squeakland April 2003

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104 participants
293 discussions

problem from a beginner
by arning＠charm.net 18 Apr '03

18 Apr '03

Mark, The one thing you are missing is to explicitly return the answer at the end of the method. Put ^answer as the last line in the method. Cheers, Bob On Wed, 12 Feb 2003 11:44:00 -0600 "Vellinga, Mark" <vellinga(a)nwciowa.edu> wrote: >I am trying to learn about squeak and writing a method to compute >factorial using a loop. Here's my code > >=========== >fact >"an alternative to factorial method" > >| answer end | > >answer := 1. >end := self. > >1 to: end do: > [:index | answer := answer * index. > >Transcript show: (answer printString), ' ', (index printString); cr. ] >============ > >The output looks fine, but when I call this method all that gets >returned is the original value sent. Please help me clear this hurdle.

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Etoy issues
by Alan.Kay＠squeakland.org 18 Apr '03

18 Apr '03

Skipped content of type multipart/alternative

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SuperSwiki Installer
by jahanzeb＠lums.edu.pk 18 Apr '03

18 Apr '03

>Hi all, > >I just uploaded a first version of an installer and some docs for >setting up your own SuperSwiki (swiki + project publishing (tanks to Bob >Arning for the project publishing code)): > >http://www.squeakland.org:8080/super/312 What's the admin username/password by default? Jahanzeb

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Etoy issues
by arning＠charm.net 18 Apr '03

18 Apr '03

Jahanzeb On Sun, 26 Jan 2003 04:57:20 -0800 Jahanzeb Sherwani <jahanzeb(a)lums.edu.pk> wrote: >>Well, you can try turning on the preference 'universalTiles' which make tile >>programming look a bit more like programming and a little less like tiles. >>This may be hard to back out of, so don't do it if you need to get back to >>where you started without quitting and restarting Squeak. > >Could you tell me where I can find these preferences? I looked and looked >but have no idea where they could be. world menu/help/preferences, then go to the scripting section. >Also, when in 'show code textually' mode, how do I save what I've written? >I tried doing alt-s which asked me for my initials, and then it seemed to >work. However, on reverting to tile mode, it said it would lose the changes >it made. I assume this means that there is no way of getting back to tile >mode with the changes updated (even though the change might have been >simply changing a value from say 5 to 10). You'd said "Once you start >changing a script (method in normal Squeak parlance) textually, it's best >to stay in text mode for that script" but from what I can see, you don't >really have a choice, you HAVE to stay in text mode. Am I correct? Looks that way. I thought I remembered otherwise, but since converting the text to tiles might not be possible, the only reliable option is to go to the last tile version when you want to see tiles again. Cheers, Bob

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Etoy issues - universal tiles
by jahanzeb＠lums.edu.pk 18 Apr '03

18 Apr '03

>world menu/help/preferences, then go to the scripting section. Thanks a lot! >Well, you can try turning on the preference 'universalTiles' which make tile >programming look a bit more like programming and a little less like tiles. This >may be hard to back out of, so don't do it if you need to get back to where you >started without quitting and restarting Squeak. It certainly makes it look more like programming, but the functionality is exactly the same from what it looks like. Is this true? Also I searched for tutorials on the wiki but it was quite confusing, especially since the tutorials page is empty. Is there any recommended way to get fluent with the non-etoy squeak? Ah I just remembered http://www.squeak.org/documentation/index.html has many tutorials that I should look at. Jahanzeb

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[Q] adding new tiles? (fwd)
by anindita＠media.mit.edu 18 Apr '03

18 Apr '03

This was in response to a question about adding tiles for TextMorphs, but you can generalize from this example. Hope this helps, Anindita ---------- Forwarded message ---------- Date: Sun, 14 Apr 2002 13:26:40 -0700 From: Ted Kaehler <Ted(a)squeakland.org> Reply-To: squeakland(a)squeakland.org To: squeakland(a)squeakland.org Cc: Scott.Wallace(a)squeakland.org, madevu(a)yahoo.com, Ted Kaehler <Ted(a)squeakland.org> Subject: Re: [Q] adding new tiles? Anindita, See the method TextMorph class>>additionsToViewerCategories. That is where you need to add a line for each new tile you want. Make a duplicate of the inner array below, and edit it. #((basic "The category name in the viewer" ( (slot characters "name on the tile" 'The characters in my contents' "balloon help string" String "Type that it returns" readWrite "both setting and getting" Player "put into viewers on objects of this class" getCharacters "getter selector (your method name goes here)" Player "put into viewers on objects of this class" setCharacters: "setter selector (your method name goes here)") "another slot" ))) --Ted. At 12:08 PM -0400 4/14/02, Anindita wrote: >Hi, > >I'd like to add a few tiles to the TextMorph viewer and I was wondering >where I can write the code to do this. I've looked through >Morphic-Kernel, Morphic-Basic, Morphic-Text Support and Morphic-Scriptors, >etc. to try to find where tile functions are defined and how tiles are >created, but I've been getting a little bit lost in all of the methods. > >I saw some methods under TextMorph's "scripting access" that match the >text-specific viewer tiles. Can I just add a few methods there and have >them automatically tiled and added to textmorph viewers or is there a >more involved multi-layer process? > >I also saw that many of the viewer tile scripts are defined in >Morphic-Scripting Player. . . again, is this the place to define new >methods to create new tiles? > > >Thanks, > >Anindita -- Ted Kaehler http://www.squeakland.org/~ted/ http://www.concordens.com (home) 3261 Montecito Drive, Las Vegas, NV 89120. voice (702) 456-7930 If builders built buildings the way programmers write programs, then the first woodpecker to come along would destroy civilization. --Weinberg's Second Law

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universal tiles info (fwd)
by anindita＠media.mit.edu 18 Apr '03

18 Apr '03

More forwarded information, this time from Scott Wallace regarding universal tiles. This response might be a bit dated because it was sent last year, but hopefully it'll be shed some light on the question of universal tiles :) Anindita ---------- Forwarded message ---------- Date: Mon, 15 Apr 2002 13:45:11 -0700 From: Scott Wallace <scott.wallace(a)squeakland.org> To: Anindita <anindita(a)media.mit.edu>, Leo Burd <leoburd(a)media.mit.edu> Subject: Re: Fwd: RE: squeak question Anindita, Leo, and all, Sorry for the delay in replying... (1) In Squeak 3.2 and beyond, the choice of whether "universal tiles" are in effect or not is governed by a Preference called "universalTiles." Each project can have its own private value for the Preference, so you can have some projects that feature universal tiles and otheres that feature "classic tiles." (2) When you request a switch from "classic" tiles to "universal" tiles in a project, all tile scripts and all tile viewers in the project are converted over to the "universal" regime. But the converse is not true -- there is no mechanism for converting "universal" scripts and viewers over to "classic" ones. If you set the universalTiles preference back to false, you're given a warning about this. (3) You can toggle back and forth between universal-tile scripting and textual scripting in a Scriptor using the same checkbox control that you use to toggle between tiles and text in "classic" tiles. The UI for this has vastly improved since 3.0, so this is another reason why everyone interested in doing tile scripting of either flavor should be working in 3.2 gamma or later. (4) Ted Kaehler has been the essential force behind "Universal tiles," which were originated by Bob Arning and also worked on by Dan Ingalls over recent years. -- Scott PS: In earlier Squeaks, I recall that when you chose "use universal new tiles" from any menu in a project, the project flipped over immediately and irreversibly to using universal tiles, and I think there was some difficulty involving the interplay between "textual scripting" and universal tiles at that time. I think that that is what stung Anindita. Best to get a fresh start in 3.2gamma. At 7:03 AM -0700 4/12/02, Kim Rose wrote: >Scott, >Wasn't the sitch Anindita describes something that was an >bug/problem and got fixed? In any case, would you repsond to him? >thanks! >Kim > >>Date: Thu, 11 Apr 2002 23:17:50 -0400 (EDT) >>cc: ml-squeakers(a)media.mit.edu >>Subject: RE: squeak question >> >>It's 3.0 >> >>I downloaded the 3.2 gamma a few hours ago and noticed that the menu item >>isn't there, although the code updates list changes in the universal tile >>system. I'll keep looking and post on squeak-dev-- see if anyone can >>help. >> >>Thanks! >> >>Anindita >> >>On Thu, 11 Apr 2002, Leo Burd wrote: >> >>> - Anidita, >>> >>> Apparently, I don't have the menu item you're referring to. Which >>> version of Squeak are you using? >>> >>> Leo >>> >>> >>> > -----Original Message----- >>> > From: Anindita [mailto:anindita@media.mit.edu] >>> > Sent: Wednesday, April 10, 2002 5:15 PM >>> > To: ml-squeakers(a)media.mit.edu >>> > Subject: squeak question >>> > >>> > Hi guys, >>> > >>> > I've been playing with scripts and tiling and discovered that >>> > if you open up a script editor on any morphic object, you can >>> > click on the tile that says [Object script1] and a menu pops >>> > up with various options, like toggling between text and tile >>> > versions of the script. No surprises there, but there's a >>> > menu item that says "use universal new tiles" that I hadn't >>> > noticed before, so I tried it out. It does this cool thing >>> > where all of the text is converted into a different kind of >>> > tile, the whole look and feel of the etoys system changes >>> > also. The problem is, I can't undo it and go back to the >>> > regular text implementation of scripting, so I can't >>> > textually edit scripts in this world anymore. It's not a >>> > crisis since I can just export all of this stuff into a new >>> > world without universal tiling, but it's quite annoying. Any >>> > ideas on how to undo this and go back to normal text/tile scripting? >>> > >>> > Thanks! >>> > >>> > Anindita

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<no subject>
by benjamin.kunst＠web.de 18 Apr '03

18 Apr '03

Dear all, I fear, I need some very basic explanation. I've played with my local installation (painting, trying the samples..) but I didn't find out how implement scripts for objects. I've also tried to find that out with the tutorials, but trying to start the car tutorial (where scripts are introduced, I suppose) a message reads: "Reading an instance of ScrollController. Which modern class should it translate to? Let me type the name now Let me think about it Let me find a conversion file on the disk" The only option, coming into question, no 3 leads to an error. Can anybody help me (is there something like a manual)? Regards Benjamin ______________________________________________________________________________ Ihr FreeMail-Postfach kann von jedem Telekom Festnetzanschluss erreicht werden? Mit der Voicebox - http://freemail.web.de/features/?mc=021163

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Colour palette project challenge
by sebastian.hergott＠tel.tdsb.on.ca 18 Apr '03

18 Apr '03

The challenge is to create a project which - has a colour palette - has a pen object which draws automatically or by some form of "fuel" - when the cursor is over a colour the corresponding pen object draws that colour - the speed of the pen is determined by increasing or decreasing the cursor speed (or by another "fuel") - the cursor could be an object - the heading (turn) of the pen is determined by a random number - the pen thickness is determined by a random number Here is the file we started in class This project can be worked on by any number of collaborators. Beauty in scripting and beauty in design count. Post your results and any other questions this raises here by Monday, Feb. 3. Possible extensions: cloning, cellular behaviour models, modelling of cancer and other disease, life simulations NB: Afew of my grade 8 students solved all but one criteria and posted the results to our internal conference over their lunch hour. We'll post this, and other evolutionary iterations on Monday. _._._._._._._._._ Sebastian Hergott Teacher/Intermediate Program Coordinator - CyberARTS Arts and Information Technology Convener ASA (Academic Services Associate) Don Mills Middle School, tel. 395-2320 17 The Donway East, Don Mills, Ontario, M3C 1X6, Canada sebastian.hergott(a)tel.tdsb.on.ca

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Fwd: Re: Squeak ideas for a classroom/clubhouse
by Kim.Rose＠viewpointsresearch.org 18 Apr '03

18 Apr '03

>Date: Wed, 15 Jan 2003 10:03:48 -0800 >To: jahanzeb(a)lums.edu.pk >From: Kim Rose <Kim.Rose(a)viewpointsresearch.org> >Subject: Re: Squeak ideas for a classroom/clubhouse >Cc: Squeakland.org mailing list >Bcc: >X-Attachments: > >Hi, Jahanzeb - > >Thanks for sharing your initial experiences and suggestions. > >Your suggestions on the Paint tutorial are well taken; we will >revisit that and make some changes based on your experience and >suggestions. Thanks. > >I am suprised to hear this: >>2) To demonstrate the simplest of scripts, by creating a sketch, and then >>dragging the "Sketch Forward by 5" tile to the workspace, 50% of the time >>the tile transforms into a new script, and the other 50% it just sits there >>as a tile (and not a script). Only after dragging an "empty script" tile, >>and then putting the "forward by 5" tile onto it, does it achieve the >>desired effect. Is there something that I'm doing differently in these 2 >scenarios, or is it something else? > >I cannot drag the "sketch forward by 5" tiles to the workspace >*without* it creating a script to contain those tiles....hmmm?? Can >anyone else offer an insight? (Scott, perhaps???) The "empty" >script is available an an alternative way to start.. > >I see that Andreas Raab addressed your other questions. >We wish you continued good luck with your sessions! Your input >provides us with great feedback so that we can continue to improve >Squeak and help others as they begin to use it too. > > -- Kim > > > >At 1:00 PM -0800 1/14/03, Jahanzeb Sherwani wrote: >>Hello everyone, >> >>Thanks to everyone who replied... it's been excellent advice, and I will >>write back in great detail to each of your mails individually. Right now, >>I'm in between the two weekly sessions (Tue & Thu) and have a truckload of >>things to take care of before then, most importantly planning the next >>session and going over what happened in our first one with my research >>supervisor. I can probably write a rather good "How NOT to conduct your >>first squeak session with children" paper right now! :) Having been through >>one session, and reading your mails again, I realize the importance of a >>variety of pertinent points that each of you have put across. >> >>For instance, I assumed that the tutorials would be a great place to start, >>so I cobbled together an offline version of the tutorial page on >>squeakland.org and we got the kids to start off with the Paint tutorial. >>However, without having a *need* to learn, and a context to learn within, >>it seemed to everyone that we were introducing nothing more than a >>glorified paint program, until the very end when we were able to get them >>to put in some basic functionality. That was just one of the mistakes we >>made in our research design. >> >>One suggestion that I have, though, is that in the Paint tutorial where it >>says to drag a paint icon into the working area, MOST kids dragged it out >>onto the world, not just the work area, and so weren't able to access the >>nextpage prevpage yellow buttons. In fact, I even made this mistake myself >>at home, but I figured that others would not be silly enough to do it too! >>If there's any workaround for that problem, it might help for subsequent >>users of the tutorial. Just a suggestion! >> >>I can describe the various problems (mostly due to my mistakes in setting >>up the structure session) in great detail if anyone is interested. >>Actually, my research supervisor (who co-conducted the session with me) >>suggested we should actually write another paper on what we were thinking, >>and how things actually happened, so that others who embark on similar >>projects don't get into them again. >> >>Anyway, I'll get to these concerns on the weekend most probably. Right now >>I have a few pressing technical concerns that I need to fix before our next >>session: >> >>1) The school's PCs are networked, but offline. On installing the squeak >>plugin, and running it, it asks for updating itself but cannot. Would >>copying over the SqueakPlugin.image file from an updated version fix this? >>I'm now assuming it will, but I didn't get a chance to try this because the >>error came too late in the game for me to try new things at the time. >> >>2) To demonstrate the simplest of scripts, by creating a sketch, and then >>dragging the "Sketch Forward by 5" tile to the workspace, 50% of the time >>the tile transforms into a new script, and the other 50% it just sits there >>as a tile (and not a script). Only after dragging an "empty script" tile, >>and then putting the "forward by 5" tile onto it, does it achieve the >>desired effect. Is there something that I'm doing differently in these 2 >>scenarios, or is it something else? >> >>3) Whats the easiest way of creating a central place where they can put >>their projects up in separate spaces, yet shareable and viewable by all? I >>have a swiki running on one of the PCs, and they are all on a LAN. >> >>4) To save a project, does the Publish button save it both locally and on a >>server? Also, what's the easiest way for them to browse the projects that >>they have saved, without getting into the hassle of dragging-and-dropping >>from Windows explorer into the Squeak window? >> >>Again, I'm deeply grateful for the thoughtful responses that I've received >>from all of you who wrote back to my initial mail. Thank you all very much, >>and I'll get back to in a few days. >> >>Jahanzeb Sherwani > > >-- > --

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squeakland April 2003