August 2013 - Pharo-users - lists.pharo.org

Trait composition on runtime
by Norbert Hartl Aug. 23, 2013

Aug. 23, 2013

Does pharo support runtime trait composition or does it only work on class definition time. I mean something like anObject addTrait: MySpecialCapability anObject removeTrait: MySpecialCapability Norbert

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[Off-Topic] Looking for a VisualWorks developer
by Sven Van Caekenberghe Aug. 23, 2013

Aug. 23, 2013

Hi, On behalf of a contact of me, I am posting the following job offer. I am well aware that this is not the correct list, please feel free to distribute this message further. It could be important for someone, and it is always good to have more people making a living doing Smalltalk. Delaware Consulting [ http://www.delawareconsulting.com ] is looking for at least one full stack Cincom VisualWorks Smalltalk developer to help maintain and further evolve a large custom-made ERP solution of a manufacturing company in Belgium. If you are interested, please contact me at sven(a)stfx.eu for a more detailed document describing the project and requirements, as well as more concrete contact details. Thanks, Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

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Re: [Pharo-users] The Pharo Advantage: what is it for you?
by Stephan Eggermont Aug. 23, 2013

Aug. 23, 2013

I'd add as a development environment to the stack: MOOSE Creating visibility in what you're building http://vimeo.com/63320261 Stephan

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Rw engine and Patterns for searching
by Gisela Decuzzi Aug. 23, 2013

Aug. 23, 2013

Hello, I'm trying to understand how to define a correct pattern and I'm lost with the cases where I use a method pattern and the desired code is inside a block. In the case where we search (methods) with metavariables and the code is inside a block. An Example: This pattern `a: `aa `b: `bb | `@temps | ``@.Stats. ``@.some size ``@.more. ``@.Stats2. Does not match with: insideABlock: arg1 part2: arg2 |temp1 temp3| [arg1 size]. temp1 := arg2 + 3. ^arg2 After looking while I realize that is not matching with part1: arg1 part2: arg2 |temp1 temp2 temp3| arg1 size. temp1 := arg2 + 3. ^arg2 Until I understand: ``@.some size ``@.more. This should mean: anything that sends the message size, doesn't matter if we have something before or after, I think that this expression should match both cases. But maybe I'm missunderstanding the patterns (again). Any help with this will be really welcome!

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saving a pharo 20619 image that has my code and RFB server causes 100% cpu utilization
by Paul DeBruicker Aug. 21, 2013

Aug. 21, 2013

If I choose 'save' or 'save as' the image locks up. It only happens with my code and the RFB server loaded. In a pharo 2 + rfb image things work fine. In a pharo 2 + my code image things work fine. 'Save and quit' then re-opening the image works fine. What can I do to diagnose what is happening? Thanks Paul

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The future of SqueakSource
by Andrei Vasile Chis Aug. 21, 2013

Aug. 21, 2013

Hi all, We will shut down the SqueakSource image at the end of next week (30 August 2013). The current system will be replaced by a simple view of the file system containing just the publicly visible projects. As meta-data, each project will have it's overview page attached (showing the licence and its author). Please forward this email to other mailing lists. Cheers, The SCG Team

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ESUG travel
by Norbert Hartl Aug. 21, 2013

Aug. 21, 2013

I just decided that I am going by car to ESUG. I'm planning to arrive on monday noon or later. If anyone near this route http://goo.gl/maps/SS0Q5 needs a pick-up let me know. I'll leave ESUG most likely on friday noon. Norbert

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Pier 3 on Pharo 3
by Stephan Eggermont Aug. 21, 2013

Aug. 21, 2013

On Aug 19, 2013, at 13:41 , Diego Lont wrote: > We now can use the following script on a clean pharo 2.0 image: > " load the configuration and from the configuration the code exporter for pier " > Gofer new > url: 'http://smalltalkhub.com/mc/Pier/Pier3Addons/main'; > package: 'ConfigurationOfPier3AddOns'; > load. > ((Smalltalk at: #ConfigurationOfPier3AddOns) project version: #'stable') load: 'Code-Exporter-Pier3'. > > " load and start the webserver. For Pharo this we use Zinc " > ((Smalltalk at: #ConfigurationOfSeaside3) project version: '3.1.0') load: 'Zinc-Seaside'. > (Smalltalk at: #ZnZincServerAdaptor) startOn: 8080. > > " load your own exported code and perform line below to recreate the kernel > PRKernelCreatorForPier register > > and copy the files pier created (css) to the correct folder (default .../Resources/files/* ) > Note: the pier image sets the folder to a fixed location in MAExternalFileModel. To reset this: > MAExternalFileModel baseDirectoryPath: nil > Setting this folder is also possible if you want to use a location outside of your image for your css files. I.e. > MAExternalFileModel baseDirectoryPath: '~/css' That comes pretty close to working on Pharo 3 too. Only changes needed was replacing ensureDirectory by ensureCreateDirectory in MAExternalFileModel For production you'd of course want to remove the default applications and set the loaded kernel as default application. Stephan

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Ph.D. Student Position on Dynamic Reflective Language Integration with FPGAs for Robotic Applications
by jannik.laval Aug. 21, 2013

Aug. 21, 2013

Dear Smalltalkers, We are searching for a PhD Student. Following you will find the proposal. Best regards, ====== Location: Mines de Douai and ENSTA Brest (France) Advisor and contacts: Noury Bouraqadi, Luc Fabresse, Jannik Laval (car(a)mines-douai.fr, website: http://car.mines-douai.fr/) LoÃ¯c Lagadec (loic.lagadec(a)ensta-bretagne.fr) Profile: the candidate must hold a recent Master of Science degree in Computer Science or Software Engineering and must have solid skills in dynamic reflective language and OOP. Description of the work: The goal of this PhD is to study Smalltalk integration with FPGAs for robotic applications. This integration will enable us get the best from both worlds. Developers are provided with a high-level dynamic reflective language (Smalltalk) for building and debugging their applications. Still, we can have high performances by projecting part of the programs into FPGAs. These reconfigurable hardware chips can achieve performance faster than C programs, while consuming much less energy. The work to do can decompose into the following tasks: -Build reference robotic applications fully in Pharo Smalltalk using actual robots (see http://car.mines-douai.fr/robots/) -Analyze these applications to identify critical parts to project on FPGAs to significantly increase performances (speed, energy) -Do the actual projection to FPGA and evaluate performances of the transformed applications -Generalize the approach and define a methodology for turning Smalltalk code into FPGA -Propose a solution to automate the methodology The Ph.D student will receive a grant which net amount is approximately 1420 euros per month for 3 years (36 months). He will be co-supervised by LoÃ¯c Lagadec from the ENSTA-Bretagne (Lab-STICC, Brest) and Jannik Laval, Luc Fabresse and Noury Bouraqadi from Ecole des Mines de Douai (CAR, http://car.mines-douai.fr/) The first 18th month will be spent in Douai (Lille area), while the last half of the PhD will be spent in Brest. However, during the full 3 years, there will be a strong interaction with co-supervisers from both labs. Bibliography: -A Robust Layered Control System For A Mobile Robot. R. Brooks. IEEE Journal of Robotics and Automation. Vol. 2. Num 1. March, 1985. -RCS: A Cognitive Architecture for Intelligent MultiAgent Systems. J.S. Albus and A. J. Barbera. Proceedings of the 5th IFAC/EURON Symposium on Intelligent Autonomous Vehicles (IAV 2004). Lisbon, Portugal, 2004. -Handbook of Robotics. Bruno Siciliano and Oussama Khatib editors. Springer. 2008. -Multi-Level Simulation of Heterogeneous Reconfigurable Platforms. D. Picard and L. Lagadec. International Journal of Reconfigurable Computing. 2012. -High-level synthesis for FPGAs: From Prototyping to Deployment. Jason cong and stephen neuendorffer and juanjo noguera and kees vissers and zhiru zhang. IEEE Transactions on Computer-aided design of integrated circuits and systems. Vol. 30. Num 4. April, 2011. -The MOLEN Polymorphic Processor. S. Vassiliadis and S. Wong and G. Gaydadjiev and K. Bertels and G. Kuzmanov and E. Moscu Panainte. IEEE Transactions on Computers. 2004. _______________________________________________________ Jannik LAVAL Enseignant-Chercheur TÃ©l. : 03 27 71 26 32 Mines Douai 941 rue Charles Bourseul BP 10838 59508 Douai Cedex _______________________________________________________

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NativeBoost: Null-terminated Strings
by Udo Schneider Aug. 21, 2013

Aug. 21, 2013

All, I just wrapped a few functions using NB - as easy as it used to be in Dolphin! Really nice. I'm stuck with a simple thing however. I'm passing a string buffer into a function which fills this buffer (null-terminated String). The passed in String however contains all the nulls as well (which is not surprising). What's the "official" way to truncate the String to it's correct length? Best Regards, Udo

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