August 2012 - Pharo-users - lists.pharo.org

HowTo not show a Debugger when calling deprecated methods in 1.4?
by Helene Bilbo Aug. 31, 2012

Aug. 31, 2012

In #14459 i set *Deprecation showWarning:*, and *Deprecation raiseWarning:* both to false, but nevertheless a Debugger pops up, whenever i call a deprecated method. Is this intended or a bug? Is there another way to turn this behavior off? -- View this message in context: http://forum.world.st/HowTo-not-show-a-Debugger-when-calling-deprecated-met… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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NativeBoost external structure with char[] rather than char*
by Guy Hylton Aug. 31, 2012

Aug. 31, 2012

I am looking for some NativeBoost advice on the best way of using a structure with an containing a char array like the following: int level int number char[256] msgText ulong elapsedTime Currently I am using an NBExternalAddress returned by NativeBoost>>allocate: because the external library holds onto the address and using byteAt: to see what is going on in the structure while I get used to the external library API. I can think of a couple of options, create my own NBExternalType subclass which I can use in an NBExternalStructure or subclass NBExternalAddress/Object with methods to extract the appropriate data, or have I missed the simple solution? Thanks, Guy

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[ANN] Aida 6.5 Summer released: more Mobile, more Cloud, more REST, ...
by Janko MivÅ¡ek Aug. 27, 2012

Aug. 27, 2012

Dear Smalltalkers, Summer Edition of Aida/Web framework and application server (http://www.aidaweb.si) is here with bunch of new features: *Mobile* - the separate MobileApp classes now allow the mobile version of your existing web apps to be developed and completely tailored to mobile devices. Separate AidaMobile add-on based on jQuery Mobile allows developing of professional and nice looking mobile apps, rivaling the native ones. TwitterMobileApp demo is included. *Cloud* based on Cloudfork. Thanks to financial support by Citilab Barcelona we have now an OpenID authentication and OAuth authorization support in Aida. You can see OpenID in action live on our GSoC site http://gsoc12.esug.org where you can register and one-click login using Google as OpenID provider. No username/password needed. Future planes includes Aida as OpenID provider and OAuth authorization server too. *REST* - Aida is RESTfull from the start but serving other than HTML like JSON is now easier than ever. Goal for Aida is to seamlessly extend the existing web apps to become REST API providers as well. *MethodLibrary* for importing ever more complex libraries directly from internet and together with directory hierarchy into Smalltalk methods and manage them with Smalltalk version control systems. jQuery, Twitter Bootstrap, Amber included. You can now open Amber simply as: http://localhost:8888/amber/index.html More in Release notes: http://www.aidaweb.si/release-notes-6.5 On Pharo it is really simple to load, just evaluate this script: Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfAida'; load. (Smalltalk at: #ConfigurationOfAida) load. Then simply open http://www.aidaweb.si:8888 . There is also a OneClick image to get to Aida even faster: http://www.aidaweb.si/download . Best regards Janko -- Janko MivÅ¡ek Aida/Web Smalltalk Web Application Server http://www.aidaweb.si

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Live testing with Autotest
by Rafael Luque Aug. 26, 2012

Aug. 26, 2012

Hi all, I'm trying to learn Pharo (at Smalltalk Camp) reviewing the great screencasts by Laurent Laffont at PharoCasts. When I try to load AutoTest as it is explained in this screencast: http://www.pharocasts.com/2010/07/live-testing-with-autotest.html I get the following Gofer error: GoferRepositoryError: Could not access http://www.squeaksource.com/MetacelloRepository: ConnectionTimedOut: Data receive timed out. Maybe the screencast is a bit outdated and I'm using the wrong repository? Thank you, Rafael Luque

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Re: [Pharo-users] Pharo fails to update
by dimitris chloupis Aug. 25, 2012

Aug. 25, 2012

thank you for helping me understand. Is there any chance the updating mechanics are documented somewhere ? I have noted to study metacello too.Â ________________________________ From: StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> To: dimitris chloupis <thekilon(a)yahoo.co.uk> Sent: Friday, 24 August 2012, 22:03 Subject: Re: [Pharo-users] Pharo fails to update > I am also wondering if update is good way to update my own code. I am actually thinking distributing my own pharo distribution for a project I am making called "Ephestos" (for visual and live coding, think of it as a simplification of Pharo with eye candy but of course still very compatible with pharo and squeak) and I wanted to provide to my users a super easy "update" button to do its magic.Â the update mechanism is working well. this is unrelated to metacello. Stef

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Fw: Pharo fails to update
by dimitris chloupis Aug. 24, 2012

Aug. 24, 2012

From:Â Sven Van Caekenberghe <sven(a)beta9.be> To:Â dimitris chloupis <thekilon(a)yahoo.co.uk>; A friendly place where any question about pharo is welcome <pharo-users(a)lists.gforge.inria.fr>Â Sent:Â Friday, 24 August 2012, 14:40 Subject:Â Re: [Pharo-users] Pharo fails to update The file that you are trying to download (/ss/Pharo14/ConfigurationOfMetacello-dkh.709.mcz)) simply does not exist on the server in question (http://ss3.gemstone.com) Why the update process is trying to do that is another question. On the other hand, I am not sure that updating released images is supported.Â ----------------------------------------------------------------- why Official supported images are not suitable for updating process ? And if not which are ? That sound extremely weird by the way. Does that mean , updating is useless ? Whats the purpose of updating in Pharo ? ________________________________ From: Igor Stasenko <siguctua(a)gmail.com> To: dimitris chloupis <thekilon(a)yahoo.co.uk>; A friendly place where any question about pharo is welcome <pharo-users(a)lists.gforge.inria.fr> Sent: Friday, 24 August 2012, 14:59 Subject: Re: [Pharo-users] Pharo fails to update yep, this is an outstanding problem with metacello configuration.. loading any project config, which involves loading metacello it gives you this error, but if you retry the same code i.e.Â MyConfiguration .. load, it works ----------------------- Should not this error get fixed ? looks pretty major to me. I did not have this problem when I tried updating few days ago.Â

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Pharo fails to update
by dimitris chloupis Aug. 24, 2012

Aug. 24, 2012

I am trying to update pharo via world menu , I am using nativeboost CogVM from jekins servers , win32 and the image from All in One pharo (pharo 1.4) that I downloaded today. It worked fine with my macos but in fails with windows 7 with this error.Â Downloading Updates Loading 14450-Pha-ZincUpdate adding Versions Downloading ConfigurationOfMetacello-dkh.709.mkz Debugger reporting : ZnHttpUnsucessful : 404 Not Found I am attaching a file out with the full trace , I hope it helps.Â

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GSoC - Package management with Fuel
by Martin Dias Aug. 24, 2012

Aug. 24, 2012

Hi This week has ended Google Summer of Code program 2012. I have to thank Marcus and Carlos Ferro, my mentors, as well as Mariano, Guille Polito, Camillo Bruni, and others, who collaborated in different ways during these three months. Also thank, of course, to Carla and Janko... and Google ;) The main purpose of this mail is to summarize the work done for my project, named "Package management with Fuel" [1][2]. Tools for managing code in Pharo export classes, traits, and methods as series of source definitions, which then import by evaluating them with the compiler. This is basically how FileOut/FileIn or Monticello works. This is slow on large pieces of code, so if you want to install a big package, you need a lot of time compiling it. Why should you compile it again, given that it was all compiled when you exported the package? The bytecodes will be the same again, you know... If you just could load the Classes and Compiled Methods instead of compiling it all again, you can save time. With this goal in mind, I started working in FuelPackageLoader[4] (now Tanker[3]), a prototype we wrote last year, which already exports and imports packages without using any compiler. But it has two important issues: it wasn't capable of export source code, and it wasn't able to tolerate class-shape changes in hierarchies (ie, a change on inst vars in a external superclass). So, we decided to start from scratch with a new prototype, code name Carbono. The idea was to reify how FileOut and FileIn are done, but storing binary information so that compilation can be avoided. In a nutshell, Carbono stores a package into two files: - A sources file, imitating the traditional FileOut chunk format. - A binary file, where uses Fuel[5] to serialize a series of code definitions. Each of them knows the position in the sources file where its source code counterpart is. For example, a class definition knows the position of its comment (in the case it exists), and a method definition knows the position of its source code. A basic example, to export a couple of classes: TAExport new binariesOn: aBinaryStream sourcesOn: aTextStream; behaviors: {ClassA. ClassB}; methods: {}; initializeClasses: true; run. which then you can import with: TAImport new binariesFrom: aBinaryStream sourcesFrom: aTextStream; run. Anyway, you can also choose to: - export only binaries or only sources - import only binaries (source code can be decompiled) - import only sources (via #fileIn) Mariano Martinez Peck worked a lot on it, fixing bugs, and especially optimizing it A LOT, so I hope you will enjoy his demonstration this Monday on ESUG Innovation Awards. Seems that he could export Seaside, Pier and Magritte, and import them in another image, with source code, and just in a few seconds ;) Also, some ultra confidential WikiLeaks revealed that he could export almost all Pharo packages, and import them in a kernel image, all with source codes but without using the compiler :) Note1: Tolerating class-shape changes in hierarchies is not yet done, but it should in some days. So far, the only strategy when a change is detected will be to recompile methods, but it may be more sophisticated in a not-so-far future. Note2: Although finally it was not strictly necessary, Guillermo Polito and me wrote tests for a new ClassBuilder. It is part of Slot, a kind of reification of objects layout made by Toon Verwaest and Camillo Bruni. It is too long to explain it here, but the thing is that was not an easy job, and we hope it will be integrated in Pharo. This is a work in progress, but you can install and try it on latest Pharo 2.0, evaluating: Gofer it squeaksource3: 'PharoTaskForces'; package: 'Slot'; package: 'SlotTests'; load. (Smalltalk at: #SlotVirus) perform: #spread. Gofer it squeaksource3: 'PharoTaskForces'; package: 'SlotsClassBuilderIntegration'; load. Gofer new smalltalkhubUser: 'marianopeck' project: 'Tanker'; package: 'ConfigurationOfTanker'; load. (Smalltalk at: #ConfigurationOfTanker) loadBleedingEdge. Gofer new squeaksource: 'FuelExperiments'; package: 'Carbono'; package: 'CarbonoTests'; load. Cheers, MartÃn [1]: http://gsoc2012.esug.org/projects/fuel-packages [2]: https://google-melange.appspot.com/gsoc/proposal/review/google/gsoc2012/tin… [3]: http://marianopeck.wordpress.com/2012/08/11/tanker-transporting-packages-wi… [4]: http://marianopeck.wordpress.com/2011/09/24/importing-and-exporting-package… [5]: http://rmod.lille.inria.fr/web/pier/software/Fuel

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Aug. 24, 2012

Hi guys we have a position for a PhD. If you are interested we can talk at ESUG 2012 or by Skype. Stef Context: Dynamically-typed languages cannot take advantage of static type information. In this context we would like to study the benefit of the introduction of static types *annotations* on library design and general robustness. The benefits can be at the level of the robustness (bug identification), but also tools (IDE) and support for assembly generation/c in case of JIT. The PhD grant is financed in the context of the Safe Python project therefore the Ph.D. will have to work in contact do we with the project partners and help in the context of some deliverables. The following tasks have to be done: - RPython is not formally defined. One of the first task will be to define the formal semantic of RPython. One approach is to write a RPython interpreter based on an operational semantics and to compare the output with the RPython interpreter. We will certainly use PLT redex which is a domain-specific language to specify and debug operational semantics. - We may use the abstract syntax tree of PyLint and use the Frama-C infrastructure. We will also consider to build a Python parser based on petitParser. - Define of some default metrics may also be necessary for the SafePython project. Their definition should be trivial on ASTs. - Analysis of the benefits of static typing for RPython. One idea is to study the existing python libraries and analyze the "distance" to the RPython subset. - Exploring type checking in presence of inconsistent type annotations. - Since we are developing Pharo and that static type annotation are important to support C or assembly generation, we would like to apply the same technique to Pharo: - define a syntax to support type annotation (reuse the one developed by Pleaid team member) - perform some analysis of existing library. References [1] D. Ancona, M. Ancona, A Cuni, and N. Matsakis. RPython: a Step Towards Reconciling Dynamically and Statically Typed OO Languages. In OOPSLA 2007 Proceedings and Companion, DLS'07: Proceedings of the 2007 Symposium on Dynamic Languages, pages 53-64. ACM, 2007. [2] A Visual Environment for Developing Context-Sensitive Term Rewriting Systems Jacob Matthews, Robert Bruce Findler, Matthew Flatt, and Matthias Felleisen [3] Felleisen,M.,Hieb,R.:The revised report on the syntactic theories of sequential control and state. (1992) 235â271 Skills and Profile You must hold a Master's in computer science, control engineering, mathematics, scientific computation or an equivalent diploma. Nationality is not taken into consideration. Knowledge in programming language design. Object-oriented programming with knowledge of Smalltalk and Python are a plus. About Lille and INRIA: Lille is located in the north of france at the border to Belgium one hour from Paris, 1h20 from London, 35 min from Brussels, by train. French food, combined with belgian beer. RMoD: http://rmod.lille.inria.fr INRIA Lille: http://www.inria.fr/lille/ INRIA in General: http://www.inria.fr Lille: http://en.wikipedia.org/wiki/Lille http://wikitravel.org/en/Lille Benefits/Users/ducasse/Workspace/FirstCircle/Administration/Ad-INRIA/Projects/2012-SafePython/PhDtopics.txt Duration : 36 months â starting date of the contract : October 2012, 15th Salary: 1957,54 EUR the first two years and 2058,84 EUR the third year Monthly salary after taxes: around 1597,11 EUR the 1st two years and 1679,76 EUR the 3rd year (social security included). Possibility of French courses Help for housing Scientific Resident card and help for husband/wife visa Additional Information Application deadline: 15 September 2012 Contact for position: stephane.ducasse(a)inria.fr

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poll reminder
by Esteban Lorenzano Aug. 22, 2012

Aug. 22, 2012

Hi, Just a reminder. The poll is still on: https://docs.google.com/spreadsheet/viewform?fromEmail=true&formkey=dFZKeXU… please, answer it... they are just 3 questions! (in fact many people think there are too few questions :) thanks, Esteban

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