May 2010 - Pharo-users - lists.pharo.org

Help (perfect for newcomers) migrating a technical FAQ
by Mariano Martinez Peck April 9, 2011

April 9, 2011

Hi folks. I had a good idea and and it perfect for someone that wants to help and don't know how. It is not the most entertained task, but I promise you will learn a lot. Mostly, if you are newcomer. The idea is basically to migrate the FAQ that is here: http://scg.unibe.ch/wiki/faq/pharofaq to a new section in the collaborative Pharo book: http://book.pharo-project.org/ So....any takers ? Let us know so that we generate a new user in the Book The idea is also to check whether what is says is still correct for pharo or if it needs an update. Or even how to improve it (from the view of a newcomer). Thanks Mariano

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Error:invalid utf8 input detected.
by Guillermo Polito June 24, 2010

June 24, 2010

Hi there! We are using Pharo to teach OOP in UTN university, Argentina. Some times students have the error Invalid utf8 input detected when loading an image or doing a file out of a category. I think it happens mostly (or always, i'm not sure) in the OneClicImage, when running on windows. Is it a known issue? Thanks!

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What's the correct way to create anonymous subclasses in Pharo?
by Joachim Geidel June 21, 2010

June 21, 2010

Hi everybody, I am attempting to create subclasses of existing classes at runtime. They must not be in their superclass' list of subclasses, because they have to be garbage collected when they are no longer needed. This is what I tried to create such a class in Pharo 1.0: newMeta := (Metaclass new) superclass: Rectangle class methodDictionary: MethodDictionary new format: Rectangle class format; yourself. newClass := (newMeta new) superclass: Rectangle methodDictionary: MethodDictionary new format: Rectangle format; setName: #MyRectangle; yourself. newClass new class == newClass "--> false" The result of "newClass new" seems to be an instance of Rectangle, not of newClass. The test at the end of the code snippet answers false. When I compile a new method in newClass and install it in newClass' methodDictionary, an instance will not understand a message with the method's selector. Almost the same code will do what I want in VisualWorks: | newMeta newClass | newMeta := (Metaclass new) superclass: Rectangle class; methodDictionary: MethodDictionary new; setInstanceFormat: Rectangle class format; yourself. newClass := (newMeta new) superclass: Rectangle; methodDictionary: MethodDictionary new; setInstanceFormat: Rectangle format; setName: #MyRectangle; yourself. newClass new class == newClass "--> true" Does anybody have an idea what the problem is and what can be done to circumvent it? Thanks in advance! Joachim Geidel

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Debugging "Error: Could not access..."
by Geert Claes June 3, 2010

June 3, 2010

I am trying to use the debugger to find our why I get: "Error: Could not access http://www.squeaksource.com/Pharo" via an HTTP proxy server with authentication. I have successfully saved the network settings and from what I can tell the HTTPSocket has the correct HTTPProxyServer/Port and seems to have something in HTTPProxyCredentials so how do I find out why I get the Could not access? http://n4.nabble.com/file/n2228445/Proxy_Authentication_Settings.png http://n4.nabble.com/file/n2228445/Error_-_Could_Not_Access.png -- View this message in context: http://forum.world.st/Debugging-Error-Could-not-access-tp2228445p2228445.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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little fix for Slice
by StÃ©phane Ducasse May 26, 2010

May 26, 2010

hi all Does any of you want to help? with a little exercise? It would be nice to help the user to provide coherent slice name I suggest SLICE-number-title title with only alphanumberical-characters any taker? because this would be cool to get another step forward http://code.google.com/p/pharo/issues/detail?id=2478 Stef

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[GSoC] Coding started yesterday!
by Mariano Martinez Peck May 25, 2010

May 25, 2010

Hi everybody. First, let me apologize for the multiple cross post. I think it is good to show the Smalltalk community periodically the status of GSoC. The good news in this case is that yesterday the students started to code! This was one of the GSoC deadlines that you can read in http://gsoc2010.esug.org/ and in http://socghop.appspot.com/document/show/gsoc_program/google/gsoc2010/faqs#… . Last two weeks or so, students have been talking and discussing with their mentors, reading and investigating about the projects. Some students already started to code before. But yesterday was the official day to start to code. For those that didn't know, we got not 5 but 6 projects. We asked more and they gave us one more ;) Once again, if you want to look at the 6 selected projects, see http://gsoc2010.esug.org/projects We already told students to ask in case of problems or questions to their mentors but also to the community (trough the mailing list). So, let's help them! Students: don't be shy. Ask! ;) Good luck to all students and enjoy this wonderful opportunity you have. Now we are in the best part of the program! Best regards, Mariano Martinez Peck GSoC admin gsoc-admin(a)esug.org http://gsoc2010.esug.org

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PhD thesis potentially in Smalltalk
by StÃ©phane Ducasse May 24, 2010

May 24, 2010

Hi guys This team has a Phd position which can be done in Smalltalk. Christophe Dony is an old smalltalk fan in the south of france. He supervised the PhD of Luc fabresse who is working with Noury (and working on Socket for Pharo right now). If you are interested please contact chouki directly. Stef Begin forwarded message: > From: Chouki TIBERMACINE <Chouki.Tibermacine(a)lirmm.fr> > Date: May 15, 2010 11:59:01 PM GMT+02:00 > To: StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > Cc: Christophe Dony <dony(a)lirmm.fr>, Bouraqadi Noury <bouraqadi(a)gmail.com>, Fabresse Luc <fabresse(a)ensm-douai.fr> > Subject: Re: [Lmo-conference] ThÃ¨se en ingÃ©nierie des composants logiciels Ã Montpellier > > VoilÃ la version anglaise. > > Chouki. > > --- > TITLE: A Reflective Component-Oriented Programming Language > > SUPERVISORS: Chouki TIBERMACINE (tibermacin(a)lirmm.fr) and Christophe DONY (dony(a)lirmm.fr) > > FUNDING: French Government Fellowship (~1500 euros gross salary per month) > > PLACE: LIRMM, CNRS and Montpellier University (South of France) > > SUBJECT: > > Research on the modeling and implementation of applications by assembling components is growing up more and more. Component-based development allows the definition of independent software modules which are put in libraries, available on catalog, and assemblable as deployment and runtime units. > > In our research lab, we developed a voluntarily simple component-oriented programming language (SCL), which allowed an original and innovative integration of the concepts of component, port, interface, connector and aspect (see [1]). > > Component languages are used now in modeling environments in association with architecture description languages. We would like to study, on the basis of SCL, a reflective solution mixing a programming and an architecture description language, which allows: > - to link entities of conceptual reuse (component descriptors) with units of integration (component instances), > - via a reflective architecture and an API of meta-programming, allowing introspection and intercession, to describe with the same language architectures, constraints on these architectures (non-functional constraints as specified in [2]), and model transformations. > > Two SCL prototypes have been implemented in Smalltalk and Ruby. A prototype of the new language can be developed in JAVA or another language, and integrated with the Eclipse plugin of modeling component-based application (CLACS). > > [1] Luc Fabresse, Christophe Dony, and Marianne Huchard. > Foundations of a simple and unified component-oriented language. > Journal of Computer Languages, Systems and Structures, 34(2-3):130-149, Elsevier 2008. > > [2] Chouki Tibermacine, RÃ©gis Fleurquin, and Salah Sadou. > A family of languages for architecture constraint specification. > Journal of Systems and Software 83(5):815-831, Elsevier 2010. > --- > > Le 15/05/10 22:52, StÃ©phane Ducasse a Ã©crit : >> tu as une version en anglais? >> >> Stef >> >> On May 15, 2010, at 10:43 PM, Chouki TIBERMACINE wrote: >> >> >>> C'est ok pour l'orienter sur notre sujet. >>> Merci d'avance :-) . >>> >>> Chouki. >>> >>> Le 15/05/10 22:13, StÃ©phane Ducasse a Ã©crit : >>> >>>> chouki >>>> >>>> je peux le contacter en lui disant que notre bourse a ete supprimee et que votre sujet peut l'interesser. >>>> J'attends ton ok. >>>> >>>> Stef >>>> >>>> >>>> >>>>> Oui, bien sÃ»r, avec plaisir ;-) . >>>>> >>>>> Chouki. >>>>> >>>>> Le 15/05/10 21:51, StÃ©phane Ducasse a Ã©crit : >>>>> >>>>> >>>>>> chouki >>>>>> >>>>>> si vous etes vraiment pret a avoir un mec qui parait bon en langage et qui est interesse je peux vous mettre en contact >>>>>> avec un des etudiants tchec dont nous avons recu un cv pour une these langage (mais que pour des raisons de strategie inria nous >>>>>> avons du abandonnee). Nous l'aurions surement embauche si la these ne devait pas etre allouee sur un autre sujet. >>>>>> >>>>>> Stef >>>>>> >>>>>> On May 15, 2010, at 9:14 PM, Chouki TIBERMACINE wrote: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> Merci StÃ©phane pour ces prÃ©cisions. >>>>>>> >>>>>>> En fait, on propose d'utiliser Java pour la future implÃ©mentation pour la simple raison qu'il est trÃ¨s difficile de nos jours de trouver un Ã©tudiant qui soit bon et qui voudrait bien travailler sur Smalltalk. >>>>>>> Si vous avez Ã Lille un bon Ã©tudiant Ã nous recommander, on est preneur. On le fera travailler sur Smalltalk (et Pharo) ;-) . >>>>>>> >>>>>>> On va regarder de prÃ¨s CLIC. Merci pour l'info :-) . >>>>>>> >>>>>>> Chouki. >>>>>>> >>>>>>> Le 15/05/10 17:04, StÃ©phane Ducasse a Ã©crit : >>>>>>> >>>>>>> >>>>>>> >>>>>>>> quel est la pertinence d'utiliser Java? >>>>>>>> conquerir le monde au travers d'eclipse? Bonne chance. :) >>>>>>>> >>>>>>>> peut etre que vous devriez contacter noury car il a un modele a composant >>>>>>>> CLIC >>>>>>>> >>>>>>>> Nous on s'amuse bien avec >>>>>>>> http://www.pharo-project.org >>>>>>>> >>>>>>>> et pas de societes aiment cela donc cela ne doit pas etre si mauvais que cela >>>>>>>> et c'est que le debut :) >>>>>>>> >>>>>>>> >>>>>>>> Stef >>>>>>>> >>>>>>>> PS: java c'est plus a la mode. maintenant c'est javascript :) >>>>>>>> et javascript va avoir les traits aussi ... >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> On May 15, 2010, at 2:12 PM, Chouki TIBERMACINE wrote: >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> --- Merci de diffuser autour de vous >>>>>>>>> >>>>>>>>> THÃSE EN GÃNIE LOGICIEL / PROGRAMMATION >>>>>>>>> >>>>>>>>> TITRE : Langage rÃ©flexif de programmation par composants >>>>>>>>> >>>>>>>>> ENCADRANTS : Chouki TIBERMACINE (tibermacin(a)lirmm.fr) et Christophe DONY >>>>>>>>> (dony(a)lirmm.fr) >>>>>>>>> >>>>>>>>> BOURSE : Allocation de recherche MENRT >>>>>>>>> >>>>>>>>> LIEU : LIRMM, CNRS et UniversitÃ© de Montpellier >>>>>>>>> >>>>>>>>> RÃSUMÃ : >>>>>>>>> >>>>>>>>> Les recherches sur la modÃ©lisation et l'implÃ©mentation d'applications >>>>>>>>> par assemblages de composants sont maintenant passÃ©es Ã l'Ã©chelle. Le >>>>>>>>> dÃ©veloppement par composants vise Ã permettre la production de >>>>>>>>> composants indÃ©pendants stockÃ©s dans des bibliothÃ¨ques, consultables sur >>>>>>>>> catalogue et assemblables en unitÃ©s d'exÃ©cution et de dÃ©ploiement. >>>>>>>>> >>>>>>>>> Nous avons rÃ©alisÃ© au LIRMM un langage de programmation par composants >>>>>>>>> (SCL) volontairement simple, qui a permis une intÃ©gration originale et >>>>>>>>> novatrice des concepts de composant, de port, d'interface, de >>>>>>>>> connecteurs et d'aspects (voir [1]). >>>>>>>>> >>>>>>>>> Les langages Ã composants s'utilisent maintenant en intÃ©gration dans les >>>>>>>>> environnements de modÃ©lisation et en connexion avec un langage de >>>>>>>>> description d'architecture. Nous souhaitons Ã©tudier, sur les bases de >>>>>>>>> SCL, un langage mixte, de programmation et de modÃ©lisation >>>>>>>>> d'architectures, rÃ©flexif, qui permettra : >>>>>>>>> - de faire le lien entre les entitÃ©s de rÃ©utilisation conceptuelles que >>>>>>>>> sont les descripteurs de composants et les unitÃ©s d'intÃ©gration que sont >>>>>>>>> les instances de composants, >>>>>>>>> - via une architecture rÃ©flexive et une API de mÃ©ta-programmation >>>>>>>>> permettant l'introspection et l'intercession, d'Ã©crire, ou de dÃ©crire, >>>>>>>>> avec le mÃªme langage des architectures, des contraintes sur ces >>>>>>>>> architectures (contraintes non-fonctionnelles selon les modÃ¨les >>>>>>>>> dÃ©veloppÃ©s par C. Tibermacine dans [2]), ainsi que des transformations >>>>>>>>> de modÃ¨les. >>>>>>>>> >>>>>>>>> Deux prototypes de SCL ont Ã©tÃ© implÃ©mentÃ©s en Smalltalk et en Ruby. Un >>>>>>>>> prototype de ce nouveau langage pourra Ãªtre dÃ©veloppÃ© en JAVA ou autre >>>>>>>>> et intÃ©grÃ© au plugin Eclipse de modÃ©lisation d'applications par >>>>>>>>> composants, CLACS. >>>>>>>>> >>>>>>>>> [1] Luc Fabresse, Christophe Dony, and Marianne Huchard. >>>>>>>>> Foundations of a simple and unified component-oriented language. >>>>>>>>> Journal of Computer Languages, Systems and Structures, 34(2-3):130-149, >>>>>>>>> Elsevier 2008. >>>>>>>>> >>>>>>>>> [2] Chouki Tibermacine, RÃ©gis Fleurquin, and Salah Sadou. >>>>>>>>> A family of languages for architecture constraint specification. >>>>>>>>> Journal of Systems and Software 83(5):815-831, Elsevier 2010. >>>>>>>>> >>>>>>>>> Bien cordialement, >>>>>>>>> >>>>>>>>> Christophe Dony& Chouki Tibermacine. >>>>>>>>> >>>>>>>>> -- >>>>>>>>> Chouki TIBERMACINE, PhD >>>>>>>>> Associate Professor in Computer Science >>>>>>>>> LIRMM - CNRS and University of Montpellier II - France >>>>>>>>> Office Phone: +33(or 0).467.149.724 >>>>>>>>> Lab Fax: +33(or 0).467.418.500 >>>>>>>>> Web Page: http://www.lirmm.fr/~tibermacin/ >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Lmo-conference mailing list >>>>>>>>> Lmo-conference(a)email.polytech.unice.fr >>>>>>>>> http://email.polytech.unice.fr/mailman/listinfo/lmo-conference >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>> -- >>>>>>> Chouki TIBERMACINE, PhD >>>>>>> Associate Professor in Computer Science >>>>>>> LIRMM - CNRS and University of Montpellier II - France >>>>>>> Office Phone: +33(or 0).467.149.724 >>>>>>> Lab Fax: +33(or 0).467.418.500 >>>>>>> Web Page: http://www.lirmm.fr/~tibermacin/ >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>> -- >>>>> Chouki TIBERMACINE, PhD >>>>> Associate Professor in Computer Science >>>>> LIRMM - CNRS and University of Montpellier II - France >>>>> Office Phone: +33(or 0).467.149.724 >>>>> Lab Fax: +33(or 0).467.418.500 >>>>> Web Page: http://www.lirmm.fr/~tibermacin/ >>>>> >>>>> >>>>> >>> >>> -- >>> Chouki TIBERMACINE, PhD >>> Associate Professor in Computer Science >>> LIRMM - CNRS and University of Montpellier II - France >>> Office Phone: +33(or 0).467.149.724 >>> Lab Fax: +33(or 0).467.418.500 >>> Web Page: http://www.lirmm.fr/~tibermacin/ >>> >>> > > > -- > Chouki TIBERMACINE, PhD > Associate Professor in Computer Science > LIRMM - CNRS and University of Montpellier II - France > Office Phone: +33(or 0).467.149.724 > Lab Fax: +33(or 0).467.418.500 > Web Page: http://www.lirmm.fr/~tibermacin/ >

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[BetaTesting] [ANN] Pharo-1.1-11367-Beta1dev10.05.1
by Mariano Martinez Peck May 21, 2010

May 21, 2010

Hi Pharaoers. I am pleased to announce the first Pharo 1.1 beta based on PharoCore-1.1-11367-Beta. It is the first time we build a Pharo 1.1 dev image with PharoCore 1.1 so the image may be not 100% stable. However, we think it is good to release it so that people can start to test it, load their own packages, adapt them, etc. We would like to receive feedback about it. It (yet) has failing and error tests. The main changes with Pharo 1.0 is that of course, it is based on a PharoCore 1.1 with all that it means. We started to write down some of the actions done in PharoCore 1.1. The list so far can be found here: http://code.google.com/p/pharo/wiki/ActionsInPharoOneDotOne Of course, for the stable releae of Pharo 1.1 we will do a clear list in the website as we did for 1.0. Regarding the included packages in 1.1 we added ScriptManager (a tool to manage and persist workspaces), ProfStefBrowser, ArchiveViewer, MethodWrappers and ObjectMetaTools (which includes things like ProtocolCatcher, ObjectTracer, ObjectViewer, etc). Another difference is the font. In Pharo 1.0 we used TrueType fonts by default. In Pharo 1.1 we use StrikeFonts (no need of TrueType plugin, netiher to have the fonts). However, of course, you can disable StrikeFonts and put TrueType like in 1.0. That's all. We would really appreciate you use it, test it, report issues, provide fixes, etc. It is important also that you start to use your own packages/applications. There have been several changes in 1.1 that may require change in your code. Ahh if you want to create the image yourself, check as usually the installScript.st file to see how to do it. Actually, you can just take a PharoCore-1.1-11367-Beta image and evaluate (the same procedure as 1.0): Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfPharo'; load. ((Smalltalk at: #ConfigurationOfPharo) project version: '1.1-beta1.10517') load. Here is the link to the image: https://gforge.inria.fr/frs/download.php/27025/Pharo-1.1-11367-Betadev10.05… Cheers Mariano

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[Job] Smalltalk Web Application Developer
by Adrian Lienhard May 21, 2010

May 21, 2010

(apologies for multiple receptions of this message) Hi all, netstyle.ch is looking for a Seaside web application developer. We are a small, agile team located in Bern (Switzerland). With Cmsbox we have developed an award winning Content Management System. The successful candidate will have excellent skills in OO software development with a dynamic programming language. Fluency in German is not a must, but we expect applicants to acquire basic understanding of German. A detailed job description can be found on our website (in German): http://www.netstyle.ch/firma/jobs For questions and applications please contact me at info(a)netstyle.ch Cheers, Adrian ___________________ http://www.adrian-lienhard.ch/

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Accentuate Characters
by Adrien BARREAU May 20, 2010

May 20, 2010

Hello, I want to compose accentuate character in Pharo, but I don't know how I can do that. I saw in Visual Works I can write this kind of things : $e composeDiacritical: (Character diacriticalNamed: #acute). That returns $Ã©. But, I don't find a way to do that in Pharo. Does somebody have an idea ? :) A.B. _________________________________________________________________ Vous voulez regarder la TV directement depuis votre PC ? C'est trÃ¨s simple avec Windows 7 http://clk.atdmt.com/FRM/go/229960614/direct/01/

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Re: [Pharo-users] [Pharo-project] Fwd: Accentuate Characters
by Mariano Martinez Peck May 20, 2010

May 20, 2010

2010/5/20 Henrik Johansen <henrik.s.johansen(a)veloxit.no> > > On May 20, 2010, at 2:18 57PM, Mariano Martinez Peck wrote: > > > > ---------- Forwarded message ---------- > From: Adrien BARREAU <abarreau.dev(a)live.fr> > Date: Mon, May 17, 2010 at 11:16 AM > Subject: [Pharo-users] Accentuate Characters > To: pharo-users(a)lists.gforge.inria.fr > > > Hello, > > I want to compose accentuate character in Pharo, but I don't know how I can > do that. > I saw in Visual Works I can write this kind of things : > > $e composeDiacritical: (Character diacriticalNamed: #acute). > > That returns $Ã©. > > But, I don't find a way to do that in Pharo. > > Does somebody have an idea ? :) > > A.B. > > > cc := CombinedChar new. > cc add: $e; add: (Unicode value: 769); combined > > Diacriticals in CombinedChar only contain the Unicode Combining Diacritical > Marks, it seems. > There's no symbol -> diacriticial char mapping as far as I can tell. > > Cheers, > Henry > > > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

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Stateful traits in Pharo?
by Johan Fabry May 20, 2010

May 20, 2010

Hi all, I was wondering if there is an implementation of stateful traits that works in Pharo. If so, where can I get it, and is it stable ? -- Johan Fabry jfabry(a)dcc.uchile.cl - http://dcc.uchile.cl/~jfabry PLEIAD Lab - Computer Science Department (DCC) - University of Chile

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Flushing the VM method cache?
by Joachim Geidel May 20, 2010

May 20, 2010

Hello all, The software I am working on generates classes on the fly, and discards those classes when they are no longer needed. The class library is cross-platform, i.e. it exists for Dolphin and VisualWorks, and I am currently porting it to Pharo. In Dolphin, it is necessary to flush the VM's method cache after discarding all the dynamically generated classes, because the method cache holds references to the classes which prevent them from being garbage collected. For VisualWorks, I have adopted this, although I am not quite sure if it's actually needed there. In the Pharo 1.0 image, I haven't found a method for flushing the VM's method cache in one go, there only seems to be Behavior>>flushCache. What I would like to know is: - Does the VM method cache of the Squeak VM hold references to classes which prevent an obsolete class from being garbage collected? If this is not the case, I don't need to flush anything. - If flushing the cache is advisable, is Behavior>>flushCache the only way to do this? I would have to pick up all the obsolete classes and iterate over them in that case. Thanks in advance! Joachim Geidel

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Newbie: Does Socket ping: 'addr' work in Pharo3.11.8 ?
by RickT May 17, 2010

May 17, 2010

I installed the one-click version on Windows (XP) recently and am learning Smalltalk. I am under the impression that in a Shout Workspace I can execute the line Socket ping: 'localhost' (or some valid address). But I always get a message that it timed out. I can successfully ping the same address in a command window. Any guidance would be appreciated. -- View this message in context: http://forum.world.st/Newbie-Does-Socket-ping-addr-work-in-Pharo3-11-8-tp22… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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[ANN] Traits installer/uninstaller utility
by Johan Fabry May 16, 2010

May 16, 2010

Hi all, this is a small package that I wrote after doing a traits-based refactoring of AspectMaps (Plug: Check out AspectMaps for a cool visualization of Aspects. http://pleiad.cl/aspectmaps. It has nice screencasts. All comments welcome!) AspectMaps extends a number of classes of FAMIX to do its thing, using standard class extensions. This works OK when you are not using traits. But when using a trait, you need to redef the class, i.e. change the original package (in this case one of the moose packages). A big no-no. This kind of change should also be encapusulated in the AspectMaps package, but currently this is not possible. So, as long as traits and packages dont play well together, these kinds of refactorings are out. However not so when you are using the TraitsApplication package. This package provides a means to programmatically install/uninstall traits. Call it in a post-load action on a package (if such a thing exists), in a class initialize method, et cetera (for AspectMaps I do it in the AspectMaps>>open method). I thought this could be useful to some members of the community so I am releasing it publicly. You can find it at http://www.squeaksource.com/TraitsApplication CAVEAT: This is a quick implementation, it is non-optimal. It can be made much more elegant, but that requires time that I dont have right now :-(. I does not handle fancy trait compositions (yet). I give no guarantees other than that 1) it passes all of its tests 2) it works for me :-) So check it out. Comments are welcome! -- Johan Fabry jfabry(a)dcc.uchile.cl - http://dcc.uchile.cl/~jfabry PLEIAD Lab - Computer Science Department (DCC) - University of Chile

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Anyone wants to put style to the welcome workspace?
by Mariano Martinez Peck May 16, 2010

May 16, 2010

Hi folks. Any volunteer to make the welcome workspace nicer? Now it is just plane text. Maybe adding some style to title, colors etc may be cool. I don't know how to do it, neither I have too much time. If you want to see where it is such code it is in DEVImageWorkspaces >> openWelcomeWorkspace in the package ImageForDevelopers-pharo from the repository http://www.squeaksource.com/ImageForDevelopers Thanks in case someone can help. Mariano

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Re: [Pharo-users] [Vm-dev] Fwd: Need help with Alien, unexpected function return value
by Joachim Geidel May 16, 2010

May 16, 2010

Steve, >>> result := (Alien newGC: 4) pointer. >>> functionPointer >>> primFFICallResult: result >>> with: self asJNIParameter. >>> ^result signedIntAt: 1 [snip] > When you use a pointer alien (which has a size field of zero) as the > return result of a function call, the alien code expects the result from > the alien to be a pointer to some area of memory and replaces the > address field of the result alien with the result returned by the > function call. You're lucky your method returned any result at all > rather than crashing with an access violation - you are dereferencing > whatever sits at 0x00010006. [snip] >>> result := (Alien newC: 4). >>> functionPointer >>> primFFICallResult: result pointer >>> with: self asJNIParameter. >>> ^result signedIntAt: 1 [snip] > This time you are returning the signed int at the block of memory > allocated by the newC: call. The memory gets zeroed before use, which is > why you get a zero. Because you used "result pointer" in the alien call > the alien code again replaces the pointer alien's address with the > result. This time though, you don't have a reference to the pointer > alien, so the result is effectively discarded. Thanks a lot for the explanation! Am 16.05.10 03:58 schrieb Steve Rees: > Try the following > > result := (Alien new: 4). > functionPointer > primFFICallResult: result > with: self asJNIParameter. > ^result signedIntAt: 1 Yes, that's it. I get the expected result now. I'll have to inspect the rest of my (ab)use of Aliens now, but that shouldn't take long. After that I'll have to find out where I should explicitly free Aliens and where the garbage collector will do that for me. I am sure I have built in some nice memory leaks. :-) Thanks again! Joachim

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Need help with Alien, unexpected function return value
by Joachim Geidel May 15, 2010

May 15, 2010

Hello everybody, I need some help with Alien on Mac OS X 10.6.3 in Pharo 1.0. I am calling a function from a vtable struct in the Java Native Interface of the Java VM which comes with Mac OS X and which is defined as jint ( __stdcall * GetVersion)(JNIEnv * env); The result type jint is just an alias for int. The Smalltalk method is ---- primGetVersion | functionPointer result vtablePointer | vtablePointer := Alien atAddress: self externalData asUnsignedLong dataSize: Alien sizeofPointer * self vtableSize. functionPointer := Alien forPointer: (vtablePointer unsignedLongAt: (4 * Alien sizeofPointer + 1)). result := (Alien newGC: 4) pointer. functionPointer primFFICallResult: result with: self asJNIParameter. ^result signedIntAt: 1 ---- functionPointer is the pointer to the GetVersion function. The result should be 65542 (16r00010006), which is also what I get when calling the function from VisualWorks, but the method answers -394042288 (-16r177C9BB0). The "result" Alien has the printString '#[0 0 0 0 6 0 1 0]' which suspiciously contains the 1 and the 6 I am looking for, but in the wrong places. ;-) I looked at examples for callouts, which seem to indicate that result should be the Alien and not a pointer to it. So I changed the code to ---- result := (Alien newC: 4). functionPointer primFFICallResult: result pointer with: self asJNIParameter. ^result signedIntAt: 1 ---- This didn't really help. The result is now 0 (zero), although the Alien prints as #[252 255 255 255 80 15 38 0] which doesn't look like a 0 at first sight. Am I using those Aliens in a correct way? What can I try to debug this? If this is too obscure and someone who knows about Aliens would like to have a look at the rest of the code, I am willing to send a bunch of Monticello packages and instructions for reproducing the problem, but I won't make it publicly available yet. Any help is welcome. Best regards, Joachim Geidel -- View this message in context: http://forum.world.st/Need-help-with-Alien-unexpected-function-return-value… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Using FFI to call a MacOs System function
by David Wilson May 15, 2010

May 15, 2010

Hi I'm new to Pharo (although I was a Smalltalk programmer in the 90's), and I'm trying to use FFI to access an MacOs system function: apiKLGetKeyboardLayoutCount < cdecl: ulong 'KLGetKeyboardLayoutCount' (void) module: 'keyboards'> ^ self externalCallFailed. I get an error "'Unable to find function address'" which seems to say the OS-module "keyboards" can't be found. I can't figure out what the address should be. The function is defined here: http://developer.apple.com/legacy/mac/ library/documentation/Carbon/Reference/KeyboardLayoutServices/ Reference/reference.html (yes, it's deprecated, I have a very old mac runnning 10.4). I'm not sure if I'm using FFI correctly, do I have to somehow include the external library in the Pharo VM? Can anyone help? I'm looked for FFI examples, but don't find anything helpful. David

2 8

Resolving some dependencies...
by Carla F. Griggio May 14, 2010

May 14, 2010

Hi everyone! I'm trying to load a sar archive for Connectors into Pharo and I need to resolve some dependencies in order to do that. In other words, I want to port Connectors from Squeak to Pharo. It seems that Connectors dependes on several classes of Morphic and Etoys that don't come with the latest Pharo images. The dependencies I need to resolve are: - TileMorph - PhraseTileMorph - Presenter - Player - Vocabulary - SymbolListType - ObjectPropertiesMorph - GenericPropertiesMorph I already resolved the following dependencies loading the packages in this repository: http://www.squeaksource.com/PharoMorphicExtras - PartsBin - ObjectsTool - BookMorph - GraphicalDictionaryMenu I started browsing classes in Squeak to follow these dependencies, and the "dependency tree" seems kind of deep, so exporting classes from Squeak and importing them into Pharo manually feels kind of dirty, I always end up having to resolve *yet* *anoher* dependency... So I started looking for some Metacello configurations that could help me with this, but I just found ConfigurationOfPharoMorphicExtras, which helped me with some of the dependencies but not all of them. Are there any Metacello configurations that could help me with this, at least with some of the dependencies? Or should I keep tracing dependencies and doing this 'manual porting' from Squeak to Pharo? Thanks in advance! Carla. PS: When I used ConfigurationOfPharoMorphicExtras, it loaded some Morphic packages but not the MorphicExtras package itself, I had to load it manually later. Is that OK?

3 9

IWST 2010 CfP - Deadline Extension
by Michael Haupt May 14, 2010

May 14, 2010

* apologies for multiple copies * The submission deadline for the International Workshop on Smalltalk Technologies (IWST) 2010 has been extended to June 18. Please find the details below. Call for Papers International Workshop on Smalltalk Technologies (IWST) 2010 co-located with European Smalltalk User Group Conference (ESUG) Barcelona, Spain, September 11-17, 2010 ** Description The goal of the IWST workshop series is to create and foster a forum around advances or experience in Smalltalk. We welcome contributions on all aspects, theoretical as well as practical, of Smalltalk-related topics. There are two possible kinds of submissions, which must be in ACM SIGPLAN style: * Research papers (up to 10 pages). Submissions in this category will be rigorously reviewed, and accepted papers will be published in the ACM Digital Library (ACM SIGPLAN has approved, the final ACM approval is pending). * Demonstration papers (up to 4 pages). Submissions in this category will not be published in the ACM Digital Library, but will be available for download from the workshop web page. ** Submission and Reviewing Process The EasyChair submission web site is at http://www.easychair.org/conferences/?conf=iwst10. Authors will be given the opportunity to comment on reviewers' work by providing feedback on the reviews. For this purpose, a questionnaire will be sent to authors. Their answers will be evaluated anonymously, and feedback will be handed on to reviewers. ** Important Dates Submission: June 18, 2010 (Samoa time) Feedback: July 16, 2010 ESUG Early Registration Deadline: July 9, 2010 Authors will be able to register for the early rate if their registration depends on IWST notification. Workshop: September 12, 2010, Barcelona, Spain ** Programme Committee Co-Chairs: Michael Haupt, Hasso-Plattner-Institut, University of Potsdam, Germany Robert Hirschfeld, Hasso-Plattner-Institut, University of Potsdam, Germany PC Members: Gabriela Arevalo, Universidad Nacional de La Plata, Argentina Johannes Brauer, NORDAKADEMIE, Germany Johan Brichau, UniversitÃ© catholique de Louvain, Belgium Marcus Denker, INRIA Lille - Nord Europe, France Theo D'Hondt, Vrije Universiteit Brussel, Belgium James Foster, GemStone Systems, Inc., USA Andy Kellens, Vrije Universiteit Brussel, Belgium Andreas Raab, Teleplace Inc., USA Lukas Renggli, Software Composition Group (SCG), University of Bern, Switzerland Randal L. Schwartz, Stonehenge Consulting Services, Inc. Dave Ungar, IBM Research

1 0

Help testing Pharo 1.1 in big screens!
by Mariano Martinez Peck May 13, 2010

May 13, 2010

Hi folks. I re-try (yes, yes, I re-insist hahaha) to have a background picture for the PharoDev 1.1. The last time I tried, we had a problem with the picture because in big screens instead of making it bigger, it put it several times, or it cut it. Now, thanks to Gary, it should work well. So, if you are a lucky guy an have a big screen, can you please take the latests PharoCore 1.1 image, for example this: https://gforge.inria.fr/frs/download.php/26995/PharoCore-1.1-11357-UNSTABLE… How to test it ? - Download this in the same directory where the .image is: https://gforge.inria.fr/frs/download.php/26996/pharoBackground.png Then evaluate: World backgroundMorph: ((UITheme builder newAlphaImage: (ImageReadWriter formFromFileNamed: 'pharoBackground.png') help: nil) autoSize: false; layout: #scaled; lock) What to test ? - You should stretch the pharo image, make it very big, and the background picture should stretch also together with the image. - If you notice a performance decrease with it (I don't think so) - If you like it or not. - If the resolution is good enough in big screens Thanks! Mariano

2 3

ecompletion - smart characters
by Johan Fabry May 13, 2010

May 13, 2010

I am very annoyed. Please turn this OFF by default. It is for me the most !@#$%^ way auto bracket typing is implemented. There is no obvious way to type a single ' or [ or ... I type it once, I get two. I delete one of them, the other also dissapears. Aaargh! -- Johan Fabry jfabry(a)dcc.uchile.cl - http://dcc.uchile.cl/~jfabry PLEIAD Lab - Computer Science Department (DCC) - University of Chile

9 19

Request help in using any WYSIWYG Javascript editor, preferably TinyMCE
by Marco A. Gonzalez May 11, 2010

May 11, 2010

Hi, I'm new to Pharo, and think that along with Seaside, it is so well architected that it's compelling me to try it for professional web development. I've created a simple web application in Seaside into which I'd like to incorporate a WYSIWYG Javascript editor for the HTML textarea tags so my users can enter stylized text. I've used TinyMCE in the past in my Java-based web apps, and it's been very simple to integrate. See http://tinymce.moxiecode.com/ . However, I can't get it to work in my Pharo/Seaside web applications. It just doesn't show up in my web browser. I hope I've specified everything below clearly, completely and succinctly. Has anyone else incorporated TinyMCE successfully? What am I missing? What am I doing wrong? Below are the relevant snippets of code: ---- #updateRoot: anHtmlRoot super updateRoot:anHtmlRoot. "Adds tinyMCE javascript code to the document with a 'script src=' anHtmlRoot addScript: self tinyMCEJavascript. #tinyMCEJavascript ^' tinyMCE.init({ // General options // mode : "textareas", mode : "specific_textareas", editor_selector : "useJavascriptWYSIWYGEditor", theme : "advanced", plugins : "safari,spellchecker,pagebreak,style,layer,table,save,advhr,advimage,advlink,emotions,iespell,inlinepopups,insertdatetime,preview,media,searchreplace,print,contextmenu,paste,directionality,fullscreen,noneditable,visualchars,nonbreaking,xhtmlxtras,template,imagemanager,filemanager", // Theme options theme_advanced_buttons1 : "save ,newdocument ,| ,bold ,italic ,underline ,strikethrough ,| ,justifyleft ,justifycenter ,justifyright ,justifyfull,|,styleselect,formatselect,fontselect,fontsizeselect", theme_advanced_buttons2 : "cut ,copy ,paste ,pastetext ,pasteword ,| ,search ,replace ,| ,bullist ,numlist ,| ,outdent ,indent ,blockquote ,| ,undo ,redo ,| ,link ,unlink ,anchor ,image ,cleanup ,help,code,|,insertdate,inserttime,preview,|,forecolor,backcolor", theme_advanced_buttons3 : "tablecontrols ,| ,hr ,removeformat ,visualaid ,| ,sub ,sup ,|,charmap,emotions,iespell,media,advhr,|,print,|,ltr,rtl,|,fullscreen", theme_advanced_buttons4 : "insertlayer ,moveforward ,movebackward ,absolute ,| ,styleprops ,spellchecker ,| ,cite ,abbr ,acronym ,del ,ins ,attribs ,| ,visualchars ,nonbreaking,template,blockquote,pagebreak,|,insertfile,insertimage", theme_advanced_toolbar_location : "top", theme_advanced_toolbar_align : "left", theme_advanced_statusbar_location : "bottom", theme_advanced_resizing : true, // Example content CSS (should be your site CSS) content_css : "css/example.css", // Drop lists for link/image/media/template dialogs template_external_list_url : "js/template_list.js", external_link_list_url : "js/link_list.js", external_image_list_url : "js/image_list.js", media_external_list_url : "js/media_list.js", // Replace values for the template plugin template_replace_values : { username : "Some User", staffid : "991234" } }); '. #renderContentOn: html html document addLoadScript:'tinyMCE.init();'. html div class: 'AmagaviBNIEventEditor'; with: [ html form multipart with: [ html table class: 'rolodex'; with:[ html tableRow:[ html tableHeading:'Descriptive text'. html tableData:[ html textArea "class: 'content';" class: 'useJavascriptWYSIWYGEditor'; columns: '60'; rows: '5'; callback: [ :editedValue | self event descriptiveText: editedValue ]; value: self event descriptiveText. ]. ]. "tableRow" ]. "table" html submitButton callback: [ self save. ]; value: 'Save'. html submitButton callback: [self cancel]; value: 'Cancel'. ]. "form" ]. "div" ---- Using my web browser, when I "view source" to see the HTML, I appropriately see the following HTML in between the <head></head> tags: <script type="text/javascript" src="/amagaviBNI? _s=UOMr33WyYGqoSDx0"></script> Copy/Pasting the "/amagaviBNI?_s=UOMr33WyYGqoSDx0" in my browser appropriately shows the tinyMCE.init() javascript method that is referenced by #tinyMCEJavascript. The textarea HTML appropriately shows <textarea rows="5" cols="60" class="useJavascriptWYSIWYGEditor" name="5">This is an event. </textarea> The body tag looks like this: <body onload="onLoad()"> ... and right above the closing body tag, the HTML is... <script type="text/javascript">/*<![CDATA[*/function onLoad() {tinyMCE.init();}/*]]>*/</script></body> I'm using PharoCore1.0, Latest update: #10517 on a Macintosh MacBookPro with OS X v10.5.8. Using "printIt" on SmalltalkImage current vmVersion, I get 'Squeak3.8.1 of ''28 Aug 2006'' [latest update: #6747] Squeak VM 4.2.2b1' I think I'm using Seaside 3.0a5 since I have a window entitled "Seaside 3.0a5" but since I've used the World menu > System > Software update to update my system, I don't know if it's been updated. I also don't know what to evaluate to determine what actual version of Seaside I'm running so I'd be grateful if someone could tell me how to do that too. If there's a newer version of Seaside that I've not been getting using "Software update", then would you tell me how to get the most recent, "usable" version also? Finally, thanks to everyone who has developed all the above-mentioned components, as well as the people using Pharo and Seaside and have been posting and answering questions. I hope to get to a point of expertise where I can contribute as well. - Marco A. --------- Marco A. Gonzalez web: http://www.amagavi.com/

4 3

Getting back the old fonts
by HernÃ¡n Morales Durand May 11, 2010

May 11, 2010

Hi all, I would like to get back the old fonts in my Pharo image (please see attachment), any tips or script? Cheers, HernÃ¡n

2 3

I'm new
by Deathiop.dev May 10, 2010

May 10, 2010

Hello everybody, I'm a recent Pharo user and I think it's pretty good. So I really want to help. I went on the bug tracker but it seems difficult for me to resolve this kind of issues for the moment. This brings me to a really simple question: How can I help ? Regard, Deathiop.

5 5

May 9, 2010

11347 ----- - better Categorizer class comment. - Issue 2400: Support passwords/usernames urls with dangerous - Some WeakSet tests expected to fail. - Issue 1920: Better PureBehaviorTests - Issue 1934: some tests for WeakRegistry Stef

1 0

Intro and Invalid UTF8 message
by Ron Jeffries May 9, 2010

May 9, 2010

Hi ... Ron Jeffries here. Long time (and long ago) Smalltalk user. Loving Pharo so far. However, I'm having some issues getting it set up nicely in Windows, especially Windows 7. I used the Windows one-click installer (and have also tried the zip file). Either way, Windows does not appear to recognize that Pharo is installed, so that when I try to set up a file association, pharo.exe doesn't get associated. (At one point, I did something that got it partly associated, but even then if i would click a .image file, I got a UTF8 error and the original image wound up opening.) It does work to drag a saved image onto pharo.exe. That's not quite as convenient as it might be but is livable certainly. So I'm looking for a pointer to some advice on setting Pharo up on Windows XP and Windows 7. Thanks, Ron Jeffries www.XProgramming.com www.xprogramming.com/blog In programming, do, or undo. There is always try. --Yoda

3 4

Messing with sockets
by Geoffroy Couprie May 9, 2010

May 9, 2010

Hello, I try to play with sockets in Pharo, and I encounter a strange error. Here is my code: |tempsock| Socket initialize. tempsock := Socket newTCP. tempsock listenOn: 12345 backlogSize: 4. [sock isNil] whileTrue:[sock:= tempsock waitForAcceptFor: 600]. sock sendCommand: 'Hello world!!'. sock ifNotNil: [[sock isConnected] whileTrue: [[sock waitForDataUntil:2000] ifTrue: [sock sendCommand:'Looping'. sock sendCommand: sock receiveData ]. ]]. sock closeAndDestroy. Once the connection is accepted, an exception is thrown in "sock waitForDataUntil:2000" by BlockCosure>>mustBeBooleanIn:context. From what I see, the signal "proceed for truth" is sent, and th debugger kicks in. How can I prevent the debugger from starting? Best regards, Geoffroy

3 4

[update 1.1] #11346
by stephane ducasse May 9, 2010

May 9, 2010

11346 ----- - cleaning SystemDictionary stef and lukas

1 0

Remote administration of VM(s)
by Geoffroy Couprie May 9, 2010

May 9, 2010

Hello, Is there another mean of remote administration than VNC? VNC is nice, but if your internet connection is slow or buggy, it becomes hard to use. Is there a project about a command line interface (ncurses like) for Pharo? Also, how do you manage a lot of VMs? Is there some sort of monitoring and administration interface I can use? (I think that question is mostly directed at the seasidehosting.st folks) I think I saw an ESUG GSOC idea about that ( http://gsoc2010.esug.org/ideas#h-116 ). Best regards, Geoffroy

4 5

Build squeak vm screencast updated (with FT2Plugin and Alien)
by laurent laffont May 9, 2010

May 9, 2010

on pharocasts: http://pharocasts.blogspot.com/2010/03/build-squeak-vm-on-linux.html Feedback always appreciated :) Cheers, Laurent Laffont

1 0

Newbie: How to load and use HTTP parser
by Andrei Stebakov May 5, 2010

May 5, 2010

Hi I have a simple task of parsing some html content in Pharo (loading an html page using HTTPSocket and retrieving useful info from it). Having browsed for an html parser in my current one-click Pharo 1.0 image, I couldn't find one. How do I find/download a (the) HTML parser? Thank you, Andrei

1 0

Pharocasts: Dynamic finder with #doesNotUnderstand, #perform and Regex
by laurent laffont May 4, 2010

May 4, 2010

Here: http://pharocasts.blogspot.com/2010/05/dynamic-finder-with-doesnotunderstan… This is the sequel to SandstoneDb, simple ActiveRecord style persistence screencast. I show how to: - override Object#doesNotUnderstand in your class to answer to unknown messages - use regular expressions to extract substrings - use #perform: and #perform:with: to send a message dynamically - develop new code in the debugger without stopping current call. Inspired by Ruby On Rails ActiveRecord dynamic finder. Cheers, Laurent Laffont

1 0