Beginners February 2007

beginners@lists.squeakfoundation.org

45 participants
30 discussions

Is there a tandard way to attach context menus
by Herbert König 04 Nov '11

04 Nov '11

Hello all, is there a standard way to attach a context menu to a morph? It's fairly easy to do by checking for yellowButtonPressed and manually firing up a MenuMorph. But it is sufficient to implement #addCustomMenuItems:hand: to get an enhanced Halo menu while #addYellowButtonMenuItemsTo:event: and #hasYellowButtonMenu don't help. So is there a predefined way without everybody doing his own? Thanks, Herbert mailto:herbertkoenig@gmx.net

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One click setup for 3.9 [win]
by Xinyu Liu 25 Jan '08

25 Jan '08

Hi people, I create a one click setup for newbies. It will do the following things after run: 1. download SqueakVM from ftp.squeak.org 2. download 3.9 images, soruces ftp.squeak.org 3. extract all things 4. create shortcut in desktop and program menu. I found the download process may cost some time, because there is only one download session. The installer can work only in Windows. It can be get from: http://liuxinyu95.googlepages.com/squeak3.9_win_installer.exe I created it with NullSoft installation system scripts. I shared the script code here: http://liuxinyu95.googlepages.com/squeak3.9_win_install.nsi You can change it when 3.9 package updates. Have fun with 3.9! Best regards. Yours, Liu

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Added Instance Variables and Methods are not shown in System Browser
by Warakorn Paphrawat 18 Nov '07

18 Nov '07

I developed a little Meta-Programming application, which adds methods to the MethodDictionary of a class and adds instance variables + getters/setters. However, after running this application the changes are not reflected in the System Browser. All new instance variables and new methods are not shown there. On the other side I can run a little test application, which creates a new instance of class (to which I added some methods and variables), which in turn uses some of the added methods and instance variables through getters/setters without any errors. Is there any trick to make these added methods and instance variables visible ? Again, the new methods are correctly integrated into the MethodDictionary with selectors and CompiledMethods according to "aClass inspect". Is there another way to check whether the new methods and new instance are really integrated into a new class? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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where to "put" a unification algorithm...
by Chris Wright 26 Mar '07

26 Mar '07

I would like to play around with some classes which require unification (I know about Prolog/V etc...). I am not sure where to "put" the unification algorithm. It might look like: anObject unifiesWith: anotherObject in: anEnvironment ? does that seem like the right sort of selector? So, to I put that in Number, Strings, Array, (and a class I've made - LogicVar)? Is it "OK" to extend the functionality of the built-in classes this way, or should I derive my own Number, String, Array --- I want to use the parser/compiler that Squeak already has, so I want to be able to enter: 5 unifiesWith: 5 in: emptyEnv On the subject of return values, what's the best way to return more than one value? Should I create my own class (UnificationReturnValue) (then I could tell it how to respond to ifTrue/ifFalse etc), or should I return a collection with indexes for the success-value and the environment-value? Thanks! Cheers Chris -- A/Prof Chris Wright FJFICJ FRACP MBBS Medical Director, ICU Monash Medical Centre Clayton, VIC

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[Newbie] Alternative for static const...
by Mispunt 03 Mar '07

03 Mar '07

Hi all, For programming my Lego Mindstorms NXT I have to use codes like 16r1F. But I actually want to be able to use "readable" codes. In a language like Java I will do that with a static const, but as far as I know I have to do it with symbols in Smalltalk. How do I create a symbol so that it is accible by all the classes? Thanks in advance, Mispunt.

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Private metods as my*?
by Blake 02 Mar '07

02 Mar '07

Greetings, I'm trying to fill in the gaps in my Smalltalk knowledge and so am going through some of the free books (thanks, Steph!). Right now I'm looking at "Smalltalk By Example" where it talks about the absence of private messages. (I've run up against methods that were private I've needed so much in other langauges that I'm not a big fan of the concept, but that aside...) Anyway, it suggests using a my- prefix for privates and an fr- for friends (or "protected", I guess). Thoughts? ===Blake===

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Monticello ad distribution
by Norbert Hartl 28 Feb '07

28 Feb '07

Hi, I'm trying to get into Monticello usage right now. I'm using Magritte and MagritteGlorp for my project. I loaded all packages for magritte from lukas' site. Then I installed MagritteGlorp from squeaksource which has an own version of Magritte-Model. Now I did a change to Magritte-Model myself. Where do I put the package? I would like to put it on the official (lukas') repo. But I'm not sure how to do it. Packages have information about the package version they are based on. But the version numbers in MagritteGlorp aren't present in the official repository. What would be the result of putting my changed version on the official repo? Is there a standard workflow for this? I doubt that package have any reference that they know where they come from. thanks in advance, Norbert

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[Newbie]Howto find the host OS
by Mispunt 26 Feb '07

26 Feb '07

Is there a way to find out (programmaticaly) on which host Squeak is running? Mispunt

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Sending messages over Bluethooth "serial port"
by Mispunt 26 Feb '07

26 Feb '07

Hi guys, I am trying to write some code (in squeak) to talk to the Lego Mindstorms NXT. Therefore I need to communicate with a Bluetooth "serial port". I can connect to the port using the SerialPort class (at least I don't get any message that tell otherwise), but when I try to send any message to the serial port Squeak doesn't response anymore. When I turn off Bluetooth I get an message like: "Error: a primitive has failed." I am working on Windows XP (in case you want / need to know) Are there people who have succesfully "talked" over the Bluetooth "serial port"? Mispunt

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URGENT: Google Summer of Code 2007 - Help needed
by Giovanni Corriga 26 Feb '07

26 Feb '07

Hi all Google has recently announced the third edition of its Summer of Code program. In this program Google provides funding to students to work on open source projects. I think Squeak could benefit, both technically and in advertisements, from partecipating in such a program. Unfortunately, the deadlines are pretty tight: - March 12th for Squeak to apply as a mentoring organization - March 24th for students to apply as developers for the program. I'm trying to have Squeak apply to the program. So if anyone would like to partecipate to this effort, either as a mentor, or as student developer, or just to provide ideas and suggestions, please contact me ASAP at my personal email. Ciao, Giovanni

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Beginners February 2007