Beginners April 2011

beginners@lists.squeakfoundation.org

38 participants
40 discussions

utf in squeak 4.2
by Ariel V Feinerman 18 Apr '11

18 Apr '11

When I use my Russian input in Squeak, then I get only '????', I use both vm: Cog, vm, even All-in-one. -- best regards Ariel

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Need help with figuring out how to incorporate SqueakSSL + WebClient into Etoys
by Steve Thomas 18 Apr '11

18 Apr '11

So I found Andreas's post on Installing SqueakSSL with Seaside <http://squeakingalong.wordpress.com/2010/08/07/using-squeakssl-with-seaside/>and figured I would try it in Etoys (realizing it may not work). I tried: (Installer ss) project: 'SqueakSSL'; install: 'SqueakSSL-Core'; install: 'SqueakSSL-Tests'; project: 'WebClient'; install: 'WebClient-Core'; install: 'WebClient-Tests'; install: 'WebClient-Seaside'. But Installer was not defined in Etoys. I tried using the "SqueakMap Package Loader" in Etoys, but got a message saying "The SqueakMap master server is running version 2.3 and the client is 2.0, You need to upgrade" I clicked yes, I got an exception. So I tried to load the .mcz files in the order listed by dragging them onto the Etoys image and selecting "load version". This worked fine for SqueakSSL-Core, but when I tried to load SqueakSSL-Tests, I got an exception (below), the key error (as far as I can tell) is Receiver: Warning: This package depends on the following classes: TestCase. So from some more searching it seems TestCase is defined in SUnit (makes sense) but when I browse the SUnit in Etoys, I only see TestCaseDebugger (ie: no Test Case). So I went to SqueakSource and loaded the latest SUnit package (SUnit-NialRoss.40.mcz, didn't bother with the GUI, for now, let me know if I should). Once I load the new SUnit, SqueakSSL-Tests loads fine. I then was able to load WebClient-Core and WebClient-Tests. Now, how do I run the tests? Also, is this the correct approach? (ie: did I load the correct things or am I missing something?) My end goal is to allow kids to post to Google Blogs from within Etoys. Thanks, Stephen

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Re: [Newbies] Re: Randomness + Pause/Delay?
by David Corking 15 Apr '11

15 Apr '11

On Fri, Apr 15, 2011 at 10:37 AM, Bert Freudenberg <bert(a)freudenbergs.de> w= rote: ... > Constructing a complex tile in Etoys goes from the concrete to the more a= bstract. You start giving specific instructions and then generalize. > So at first,=A0you place that "Red | action" tile in your script. Then yo= u can test if that is working. > Later, you replace the "Red" receiver tile with the "AllPlayers |=A0playe= r at cursor". You drag it from the viewer onto the "receiver pad" of the=A0= "Red | action" tile. ... > This "outside-in" construction of complex tiles works naturally when you = "invent" the script=A0yourself step-by-step by experimenting. When you only= see the result, it can be perplexing how to construct it. The sequence is = executed from left to right, but made from right to the left. That's why fo= r arithmetic expressions there is the little "extend" arrow to the right (b= ut you still need to build nested expressions outside-in). This outside-in method, as well as the ability to send a message to all players in a collection, are important tools for advanced tile scripts. Do we have a tutorial covering this in the Squeakland documentation? If not, I suggest we use Bert's scripts and explanation as the basis for the first draft. David

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Re: [Newbies] Re: Randomness + Pause/Delay?
by Bert Freudenberg 15 Apr '11

15 Apr '11

"action" is a script of the red and blue rectangles. You find it in the viewer's "scripts" category for e.g. the red rectangle. "player at cursor" is a tile of the "AllPlayers" holder. You find it in the viewer's "collections" category. (or type in the search box). Constructing a complex tile in Etoys goes from the concrete to the more abstract. You start giving specific instructions and then generalize. So at first, you place that "Red | action" tile in your script. Then you can test if that is working. Later, you replace the "Red" receiver tile with the "AllPlayers | player at cursor". You drag it from the viewer onto the "receiver pad" of the "Red | action" tile. Now, instead of always performing the "Red" object's "action", it runs the "action" script of whatever object is the current one inside of the "AllPlayers" holder. You have to make sure yourself that the objects in "AllPlayers" actually have a script named "action", otherwise an error will occur. The type system of Etoys only prevents that e.g. you drop a color where a number is expected. This "outside-in" construction of complex tiles works naturally when you "invent" the script yourself step-by-step by experimenting. When you only see the result, it can be perplexing how to construct it. The sequence is executed from left to right, but made from right to the left. That's why for arithmetic expressions there is the little "extend" arrow to the right (but you still need to build nested expressions outside-in). - Bert - On 15.04.2011, at 03:32, michael rice wrote: > I give up. Where (how) do you get the > > AllPlayer's | player at cursor | action tile > > shown at the bottom of the attachment? > > Michael > >

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Exception question
by Erlis Vidal 14 Apr '11

14 Apr '11

Hi, I've been reading about the smalltalk exceptions thanks to some suggestions received in this list. While reading https://gforge.inria.fr/frs/download.php/26600/PBE2-Exceptions-2010-03-02.p… 9) I found the implementation for *Object>>doesNotUnderstand *but there is something I don't understand and I'm wondering if someone can help me. Object»doesNotUnderstand: aMessage "Handle the fact that there was an attempt to send the given message to the receiver but the receiver does not understand this message (typically sent from the machine when a message is sent to the receiver and no method is deﬁned for that selector). " MessageNotUnderstood new message: aMessage; receiver: self; signal. ↑ aMessage sentTo: self. I'm having problem with the line in red. The method is pretty simple, it just create a new MessageNotUnderstood instance and then send the message: and receiver: messages, but it also *signal *the exception, which I was thinking will finish the method execution, but if that's the case, Why the red line? Why returning anything after signaling the exception? Regards, Erlis

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Re: [squeak-dev] [ANN] Seattle Smalltalk Users Group
by Casey Ransberger 13 Apr '11

13 Apr '11

LOL yeah and the roads here just go every which way... it's as if they gave a guy two bottles of scotch, and wherever he walked with them, they built a road. Seriously, though, if you think about it: Smalltalk has a culture that was founded by musicians. One thing I'd really like to see is a room full of people face to face figuring out new and interesting ways to make music with Squeak or Scratch. I would encourage people to bring their instruments:) On Wed, Apr 13, 2011 at 12:55 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > Excellent idea. I cc'ed vw. > > BTW... I am imaging how the logo could look like...something betweenKurt > Cobain and the Smalltalk baloon heheheh. > > On Wed, Apr 13, 2011 at 9:52 PM, Casey Ransberger < > casey.obrien.r(a)gmail.com> wrote: > >> A while back I asked if anyone on the squeak-dev list was in the greater >> Seattle area and wanted to meet up. I did get a few responses. Thanks to >> those who wrote back, and I apologize for the delay. I'm starting this up in >> part to create a venue here where Smalltalk isn't automatically out as >> off-topic. The idea is that it's about Smalltalk and anything remotely >> related to Smalltalk. In fact I'd really like this to be open to everyone >> who can be respectful to other people. The rest is just a bunch of >> implementation detail! >> >> So if you're in the neighborhood, and you think you might like to meet up >> with some like minded people on a regular basis, do pop over and add >> yourself to the list. I figure I'll work out a schedule if and when I have >> signups, but in general it will probably be early evenings on Wednesdays, >> maybe once a month to begin with. >> >> The site is here: >> >> http://www.meetup.com/Seattle-Smalltalk-Users-Group/ >> >> If anyone here is on the vwnc list and would like to pass my message along >> there, or anywhere else it might reach Smalltalkers in the Seattle area, I'd >> be much obliged! >> >> -- >> Casey Ransberger >> >> >> >> > > > -- > Mariano > http://marianopeck.wordpress.com > > -- Casey Ransberger

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[ANN] Seattle Smalltalk Users Group
by Casey Ransberger 13 Apr '11

13 Apr '11

A while back I asked if anyone on the squeak-dev list was in the greater Seattle area and wanted to meet up. I did get a few responses. Thanks to those who wrote back, and I apologize for the delay. I'm starting this up in part to create a venue here where Smalltalk isn't automatically out as off-topic. The idea is that it's about Smalltalk and anything remotely related to Smalltalk. In fact I'd really like this to be open to everyone who can be respectful to other people. The rest is just a bunch of implementation detail! So if you're in the neighborhood, and you think you might like to meet up with some like minded people on a regular basis, do pop over and add yourself to the list. I figure I'll work out a schedule if and when I have signups, but in general it will probably be early evenings on Wednesdays, maybe once a month to begin with. The site is here: http://www.meetup.com/Seattle-Smalltalk-Users-Group/ If anyone here is on the vwnc list and would like to pass my message along there, or anywhere else it might reach Smalltalkers in the Seattle area, I'd be much obliged! -- Casey Ransberger

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AllPlayers tile
by michael rice 13 Apr '11

13 Apr '11

Where do I get an AllPlayers tile? Michael

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error handling
by Erlis Vidal 12 Apr '11

12 Apr '11

Hi all, After finishing "Squeak By Example" I have an unanswered question and is about the error handling. I could see in the book how to raise an error with the message error: but what I couldn't find anywhere is how to react when an error occurs. Could someone point me in the right direction about this. Any link or book will do it, you don't have to write a hole chapter while answering to me I will read whatever you suggest. Thanks and regards, Erlis

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Re: [Newbies] error handling
by Erlis Vidal 12 Apr '11

12 Apr '11

Hi Ken, Thanks for the hint! I just finished Squeak By Example but I see that Pharo By Example is another good choice, good material there. I'll take a look at it too. On Tue, Apr 12, 2011 at 3:38 PM, Ken G. Brown <kbrown(a)mac.com> wrote: > At 11:02 AM -0700 4/12/11, Randal L. Schwartz apparently wrote: > > >>>>> "Erlis" == Erlis Vidal <erlis(a)erlisvidal.com> writes: > > > >Erlis> After finishing "Squeak By Example" I have an unanswered question > >Erlis> and is about the error handling. I could see in the book how to > >Erlis> raise an error with the message error: but what I couldn't find > >Erlis> anywhere is how to react when an error occurs. > > > >The Exception framework is quite nice. Google for "squeak exception > >tutorial" and I'm sure you'll find some more details. I believe there > >is also some in-image documentation for the Exception class and its > >subclasses. > > > >Here's one http://www.chrisburkert.de/index.php?node_id=73 > > And a draft chapter on Exceptions from Pharo by Example 2 at: > <http://pharobyexample.org/> > > Ken > > > > >-- > >Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 > 0095 > ><merlyn(a)stonehenge.com> <URL:http://www.stonehenge.com/merlyn/> > >Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. > >See http://methodsandmessages.posterous.com/ for Smalltalk discussion > >_______________________________________________ > >Beginners mailing list > >Beginners(a)lists.squeakfoundation.org > >http://lists.squeakfoundation.org/mailman/listinfo/beginners > > _______________________________________________ > Beginners mailing list > Beginners(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/beginners >

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Beginners April 2011