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

About validation
by StÃ©phane Ducasse March 11, 2018

March 11, 2018

Hi I read the chapter on validation of the mentoring course book of andres valloud. http://www.lulu.com/fr/fr/shop/andres-valloud/a-mentoring-course-on-smallta… And I love this extension of SUnit. I loved the idea when I saw it for the first time at Lugano (presentation of Leandro Caniglia). I encourage everybody to read it. Now does anybody implemented in Pharo the SUnit extension? I would like to play with it and eventually write a chapter on it for the next book. The idea is so good. Stef

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Re: [Pharo-users] Slot questions
by Paul Davidowitz June 2, 2015

June 2, 2015

To Camillo Bruni: I'm not using any slot image (I only looked over the paper). According to the Pharo book, 'pvt' should be implemented in the mainstream image. To Marcus Denker: There are actually several methods in the image with the 'pvt' prefix. Please update the doc (Pharo book) to remove talking about 'pvt'. It would have saved me a little headache :)

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funny idea Symbol vs. Selector
by stephane ducasse May 14, 2015

May 14, 2015

Hi guys I'm thinking aloud... I was wondering if we could not take advantage of a new class: Selector. MethodDict would only contain selectors and not symbols. I remember that I talked about that with hernan. Stef

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How do I save contents of Workspace into a collection?
by Frank Church Jan. 31, 2015

Jan. 31, 2015

Hi guys, My images are gathering a number of Workspaces whose contents I don't want to delete. I want to create a collection of Workspace contents along this defintion: Description Date Category Content (the actual text in the Workspace). In the final version I would like to be able to select a workspace and simply click a button or a menu item and get a dialog where I can enter the Description, Category and Date with the Workspace contents automatically captured into a text box. Copying and pasting the contents would be okay to start with. Filing it out would be another aspect later. What kind of array would best suited to the task? There is quite a number of them depicted here: http://www.jmcsweeney.co.uk/computing/m206/collections_intro.php What could be the best way to go about it? For those who are curious I am experimenting with the original ideas of Smalltalk where a computer user would do everything in Smalltalk workspace/desktop. I am intrigued by the possibility and somehow it seems eminently doable. -- Frank Church ======================= http://devblog.brahmancreations.com

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Slots
by Thomas Worthington May 19, 2014

May 19, 2014

I notice that "Slots" are slated for addition in Pharo 3.0. Is there anywhere I can see which model of "slots" is being suggested? I'm not sure that slots, in the sense of Javascript, are a good idea generally and, in the broader context, I'm very unhappy with the idea of messing with Smalltalk's generally clean syntax by adding new language features. Could the desired effects be achieved by subclassing Behavour or somesuch high-level approach? -- Thomas Worthington

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Postmark email library
by Francois Stephany Aug. 31, 2013

Aug. 31, 2013

Hi guys, I've made a simple wrapper around the Postmark API. It lets you send emails without dealing with a SMTP server. You can read about it here: http://developer.postmarkapp.com/developer-libs.html http://developer.postmarkapp.com/developer-build.html and there: http://articles.tulipemoutarde.be/send-email-from-pharo-with-postmark It's pretty simple and naive implementation but it gets the job done. I'll add email attachements when I will need it. Francois

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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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Voyage: Circular references
by Bernat Romagosa Aug. 14, 2013

Aug. 14, 2013

Hi! I'm having an issue I don't recall having had about half a year ago when trying out Voyage. In my schema, a *User* has an *instVar* referencing all the *Center*s he belongs to, and a *Center* has an *instVar* referencing all of its *User*s, so when the Voyage serializer tries to serialize a user (or a center), it goes into an infinite loop trying to find the end of the reference chain and the image clogs. I remember saving the exact same schema a while ago without a problem, is there something new I should know about? BTW, I'm using the #bleedingEdge version, with Magritte3 and all. Thanks! :) -- Bernat Romagosa.

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Git filetree workflow
by joerick Aug. 12, 2013

Aug. 12, 2013

I work on a project that uses smalltalk as a part of a larger system. We version control most of the code (Objective-C, mainly) using Git. Currently the repo has a build script under version control which specifies the monticello package versions to fetch for a given commit. This works okay, and keeps everything in step, but the change histories are in two places (Git and monticello) which is undesirable, and branching/merging is difficult. I'm looking at using filetree (https://github.com/dalehenrich/filetree) to store the smalltalk source in the git repo. I was wondering what the workflow is within the image. Is there an easy way to keep the code on the filesystem in sync with the code in the image? At the moment it seems that there will be a lot of loading/saving in the monticello browser whenever I change code either using git or within the image. For example, do I have to save code out to the filesystem using the Monticello browser, and then inspect the diffs in git? -- View this message in context: http://forum.world.st/Git-filetree-workflow-tp4701465.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Pharo 2.0 with Seaside + DBXTalk + GlorpDBX + Magritte 3 + TWBS is getting slower and slower
by phil＠highoctane.be Aug. 4, 2013

Aug. 4, 2013

Hello, I've been loading all of those packages in order to build a full web stack development image. Everything now loads fine and kind of works but... The image is really slowing down and the size is getting very large. Here is the current one: 332580684 29 jul 10:50 Pharo-DripfeedIt-Magritte3-OpenDBX_20130729_1050.image 300+ megs... I've been doing some development in there and started looking for why this was getting so large and slow. I did a SpaceTally print analysis and imported the results in a spreadsheet. Look at the top consumers, especially the Semaphore thing. It is way beyond whatever was expected. There is something wrong there. There must be a leak of Points, MorphExtensions and I can't just figure out why there are so many Floats. I've been running test suites for some of the packages (e.g. OpenDBX and Glorp) and this may be the result. This image is kind of what one doing web dev would end up with. But then, it is very hard to get rid of that unwanted space. I am trying to build a system I can start using for business projects and feel concerned about that memory growth very seriously. Any pointers (I chased some already but here, there are way too many entries); Thx Phil

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