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

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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Traits versus packages
by Johan Fabry April 30, 2010

April 30, 2010

Hi all, quick question. Preamble: If I have a trait TAMStructuralZoom defined in the package AspectMaps (for example), and I want to apply it to the class FAMIXNamespace, defined in the package Famix-Core (for example), this implies that I need to change the class definition of FAMIXNamespace like this: FAMIXScopingEntity subclass: #FAMIXNamespace uses: TAMStructuralZoom instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Famix-Core' Question: this change is now part of the Famix-Core package, right? Is it possible for this change to be part of the AspectMaps package? I want this for the obvious modularity & source code management advantages. -- 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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Pharo developers you can subscribe to Pharo-Users too ; )
by Mariano Martinez Peck April 27, 2010

April 27, 2010

Hi everybody. We have two mailing list as you may know: one for pharo developers or people very interested in Pharo and its internal details. This mailing list is pharo-project(a)lists.gforge.inria.fr It is high traffic and there are a lot of people that cannot follow. Then we have the Pharo-User mailing list for those that just want to use Pharo and don't care about their internals. This mailing list has less traffic. This mailing list is pharo-users(a)lists.gforge.inria.fr The problem is that there is people that are subscribed to pharo-project(a)lists.gforge.inria.fr but not to pharo-users. In this last mailing list, usually new comers ask questions. It would be great that all the people that is already subscribed to pharo-project(a)lists.gforge.inria.frand have time to follow that mailing list, to subscribe also to Pharo-Users. Sometimes I am obligued to tell new comers "ask in pharo-project(a)lists.gforge.inria.fr as not all the people is subscribed there" ... and thus, the Pharo-Users becomes useless. Thanks Mariano

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Re: [Pharo-users] [Pharo-project] RB AST serialization
by Johan Fabry April 27, 2010

April 27, 2010

(To pharo-users as I am not on pharo-project, and I think neither is Daniel) Yes we have been considering various strategies to get it as compact as possible and considering cputime/memory trade-offs (and making it possible to select compression strategies). But want to get it to work first. These undocumented nodes are the next hurdle: we need some info on RBPragmaNode, RBArrayNode, RBLiteralArrayNode so that Daniel can write the serializer for them. On 27 Apr 2010, at 01:49, StÃ©phane Ducasse wrote: > Daniel what would be really cool is to see if we can compact/zip AST because > marcus is really interested into slimbinary libraries and having a really strong compaction > of AST would be an interesting basis for a lot of experience > > On Apr 27, 2010, at 6:45 AM, Daniel Galdames wrote: > >> Hi, I'm working on a serialization of a RB AST, is in a very very earlier state, it can encode simple ASTs into a string but today i changed the encode methods, so now you can't decode the generated string :-P .Some node from AST-Core can't be encoded yet (RBPragmaNode, RBArrayNode, RBLiteralArrayNode) because I'm not sure what to encode, and the nodes aren't documented, at least in Pharo 1.0. >> Any comments and suggestions will be appreciated!! :-) >> I uploaded the code in squeaksource: >> http://www.squeaksource.com/AstSerializer.html >> >> I'm a bit new to Smalltalk and Pharo, so feel free to comment... >> Greetings, >> Daniel Galdames G. >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project -- 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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(no subject)
by alex mortelmans April 27, 2010

April 27, 2010

Hi, when using a SystemBrowser, can there be a navigation history? To explain what iÂ mean, here is an example. WhenÂ you search : Â Rectangle >> flipBy: direction centerAt: aPoint ; Point >> rect: aPointÂ ; Rectangle >> origin: originPoint corner: cornerPoint ; Â Â .. and then want to go back to : Â Rectangle >> flipBy: direction centerAt: aPoint Â , is there some tool allowing to step back ? Â Alex Â

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XmlRpcClient for smalltalk ?
by tommy koorevaar April 27, 2010

April 27, 2010

Hello everyone, I'm a French student and I'm working on a project in which I have to send XmlRpc request with smalltalk. Does anyone know if there is anything already implemented I could use ? Thank you very much, Tom

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[ANN] Pharocasts: SandstoneDb (with subtitles !)
by laurent laffont April 26, 2010

April 26, 2010

Hi, I've just uploaded a new screencast which introduces SandstoneDb (and also HelpSystem). http://pharocasts.blogspot.com/2010/04/sandstonedb-simple-activerecord-styl… Note this is my first one with subtitles. There's a link so you can download it and translate it (some people have asked for that). I've used SubtitleEditor (http://home.gna.org/subtitleeditor/) but I don't really like it. Do you know a better software on Linux ? The video is accelerated, it's more dynamic IMHO ( to do this in avidemux, just go in video menu, framerate, and put a higher framerate). <http://pharocasts.blogspot.com/2010/04/sandstonedb-simple-activerecord-styl…> Cheers, Laurent Laffont

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Implementing a "prototype" in Pharo
by Miso April 24, 2010

April 24, 2010

Hi, I'm trying to creating a concept similar to "prototype" (like prototype-oriented programming) in Pharo. What I want is an object's methodDictionary to be stored in itself. So when I send a message to an instance, Pharo should look in the instance's dictionary (as opposed to class' dictionary) and call method stored there. Closest thing I managed to do was create an anonymous class (subclass on my custom class) for each instance and return instance of this class, and store the anonymous class in the instance so I can work with it. Is there any other way to do it, without modifying compiler/VM or writing custom compiler? If not, please give some pointers where to look for some information about "core" of Pharo. Thanks Michael -- View this message in context: http://forum.world.st/Implementing-a-prototype-in-Pharo-tp2063374p2063374.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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How To Bind To External Libraries in Pharo ?
by Bill Rodgers April 22, 2010

April 22, 2010

Hi Experts, How can I connect to libraries of the type that I would "include" in a C program? Must I re-compile Pharo to include them or is there some other way to do this at run-time? I'm looking at some Gnome libraries (GTK+, Gstreamer) which I would like to use from Pharo. Thanks, Bill

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We already have the selected projects and students!
by Mariano Martinez Peck April 21, 2010

April 21, 2010

Hi folks. First of all, let me apologize for being quite offline the last weeks and for not helping too much. I had some personal stuff to do ;) Fortunately, Janko could take care of it and keep it rolling. Thanks a lot Janko. Here are what all of you want to know: the final results of voting for 5 projects to get this year GSoC stipendiums: 1. Cross-Platform Namespaces (score: 80) by GermÃ¡n Leiva, mentor James Foster http://gsoc2010.esug.org/projects/namespaces 2. Generate UML diagrams from Smalltalk code for Pharo (score: 77) by Carla Florencia Griggio, mentor Geert Claes http://gsoc2010.esug.org/projects/uml-from-smalltalk 3. Squeakland education project (score: 76) by Ricardo Moran, mentor Randall Caton http://gsoc2010.esug.org/projects/squeakland-education 4. Progress Towards a Cross-Dialect Smalltalk FFI (score: 74) by Dmitry Matveev, mentor Eliot Miranda http://gsoc2010.esug.org/projects/ffi 5. Visualization of profiling information in Pharo and Squeak (score:73) by Mariano Coca, mentor Alexandre Bergel http://gsoc2010.esug.org/projects/profiling-visualization Congratulations to the accepted students! Be aware that the most "non enjoyable" part of the process has already finished so now it's time to code, hack and have fun! You are the envy of a lot of people, you are being paid to program in something that you really like and enjoy. This is an excellent opportunity so take advantage of it and don't miss it. Please, work hard and deliver something, but never forget to have fun, learn and enjoy. For all the students which were not accepted, don't worry. If your project and proposal is good you will find another opportunity sooner than you expect. For us, this was an excellent opportunity to gather information about really interesting projects and, what's more, to know lots of great students with a passion for Smalltalk. With no doubt, we will keep in touch with all of you and we will eagerly wait your application for next years. Thanks again to all of you for helping us to make the Smalltalk community bigger and better. So stay tuned with us! Cheers Mariano Martinez Peck GSoC admin gsoc-admin(a)esug.org http://gsoc2010.esug.org

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