January 2022 - Pharo-users - lists.pharo.org

EXIF / JPEG metadata
by Alistair Grant Nov. 30, 2025

Nov. 30, 2025

Hi Everyone, As far as I can tell, JPEGReadWriter in Pharo 7 doesn't read (or write) the image metadata, e.g. title, keywords, exposure time, etc. Is anyone aware of a package that does? Thanks! Alistair

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Re: [Pharo-users] Personal wiki / information manager
by Evan Donahue Sept. 25, 2023

Sept. 25, 2023

Seems that Pharo is a magnet for this kind of project. I've been writing one as well and using it to organize my research notes. Does anyone working on personal info mgmt tools want to talk offline? I expect we're running into some of the same issues, both conceptual and technical. Evan

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ESUG 2022 call for presentations & Call for student volunteers
by stephane ducasse April 23, 2022

April 23, 2022

ESUG 2022 Novisad Serbia 22. â 26.8. https://esug.github.io/2022-Conference/call2022.html You can support the ESUG conference in many different ways: Sponsor the conference. New sponsoring packages are described at http://www.esug.org/supportesug/becomeasponsor/ <http://www.esug.org/supportesug/becomeasponsor/> Submit a talk, a software or a paper to one of the events. See below. Attend the conference. We'd like to beat the previous record of attendance (170 people at Amsterdam 2008)! Students can get free registration and hosting if they enroll into the the Student Volunteers program. See below. <>Developers Forum: International Smalltalk Developers Conference We are looking for YOUR experience on using Smalltalk. You will have 30 min for presentations and 45 min for hands-on tutorials. The list of topics for the normal talks and tutorials includes, but is not limited to the following: XP practices, Development tools, Experience reports Model driven development, Web development, Team management Meta-Modeling, Security, New libraries & frameworks Educational material, Embedded systems and robotics SOA and Web services, Interaction with other programming languages <>Teaching Pearls and Show us Your Business New this year!!! We added two types of sessions in addition to the regular talks and show us your projects sessions. Show your business 10 min session (Get prepared!!) Teaching pearls : we want some session on how to teach some design aspects. We want your tip and tricks to teach Smalltalk or OOP. We expect to have several 10 to 15 min sessions aggregated. <>How to submit? Make a Pull Request here https://github.com/ESUG/esug.github.io/tree/source/2022-Conference/talks Or but only if you are not connected to the worldâ¦ send an email to stephane.ducasse(a)inria.fr Title: [ESUG 2022] Please follow the template below the email will be automatically processed! Name: Email: Abstract: Bio: Call for Student Volunteers Student volunteers help keep the conference running smoothly; in return, they have free accommodations, while still having most of the time to enjoy the conference. Pay attention: the places are limited so do not wait till the last minute to apply. Conference details: Send an email to stephane.ducasse at inria.fr and serge.stinckwich at gmail.com with: title: [ESUG 2022 Student] name, gender, university/school, country, email address short description of you and why you are interested in participating For which period is accommodation covered? Accommodation is covered from Sunday 21 August until Friday 26 August 2022 (including nights from Sunday to Monday and from Thursday to Friday). Students will be hosted in student rooms. ESUG additionally covers for the lunches during the week and one dinner. Duties include handling registration as people arrive at the conference, filling coffee machines, collecting presentation slides for ESUG right after the presentation is given, being present at an information desk to answer questions, and generally being helpful. Student volunteering makes the conference better, takes a fairly small amount of time and doesn't significantly interfere with enjoying and learning from the conference. Please Note, this role requires discipline and constant attention to all attendees. Information about hotel Student Volunteer rooms are booked at (to be announced). If you are student volunteer, do not book yourself, we have arranged the booking already!

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WebDav and CalDav in Pharo ?
by CÃ©drick BÃ©ler April 13, 2022

April 13, 2022

Hi all, I do some experiments with iCal. For now I serve a full calendar over HTTP. Not bad, but it is read only. Iâd like to try CalDAV. I was looking for it, and also webDAV. Gofer it smalltalkhubUser: 'UdoSchneider' project: 'FileSystemNetwork'; configuration; load. #ConfigurationOfFileSystemNetwork asClass project stableVersion load: 'Webdav' Iâve found the project of Udo, but it doesnât load on P8. I think this is due to the stream refactoring. Right now the image hung. Iâll try maybe to load it manually. But I was wondering oof there were other alternatives ? TIA, CÃ©drick

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Too many parenthesis - a matter of syntax
by Kasper Osterbye March 1, 2022

March 1, 2022

Cheers all I have noticed that I often ends up with quite a number of nested expressions, for example: (((json at: 'tree') select: [ :e | (e at: 'type') = âblob' ]) collect: [:e | Path from: (e at: 'path')]) select: [ :p | p segments last in: [ :name | (name endsWith: '.md') | (name endsWith: '.mic') ] ] What kind of proposals (if any) have been for a different syntax which could give a more streamlined syntax? My own thinking has been around an alternative to the cascade semicolon. What symbol to use does not matter for me, but something like json at: âtree' Âº select: [ :e | ((e at: 'type') = 'blobâ)]Âº collect: [:e | Path from: (e at: 'pathâ)]Âº select: [ :p | p segments last in: [ :name | (name endsWith: '.md') | (name endsWith: '.mic') ] ] Basically, a send the right hand expression to the result of the left hand expression. Has anyone ever tried this, or is it just one of the many small annoyances best left alone? Best, Kasper

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grants Master Internship / offres de stage Master
by Pierre Bommel Feb. 10, 2022

Feb. 10, 2022

(sorry for redundancies) Hello, Bonjour, Hola, We are looking for a Master internship to work on Cormas, a simulation platform (https://github.com/cormas/cormas , or see here for our presentation at ESUG: https://hackmd.iscpif.fr/GGwvzBFqRASE5zCzlRwArQ?view) Nous recherchons un stagiaire de Master pour travailler sur Cormas, une plateforme de simulation (https://github.com/cormas/cormas , cf. notre prÃ©sentation Ã ESUG: https://hackmd.iscpif.fr/GGwvzBFqRASE5zCzlRwArQ?view) Estamos buscando un estudiante de MaestrÃa para trabajar en Cormas. Voici l'annonce en franÃ§ais (in English below) : https://www.hdigitag.fr/fr/les-offres-de-stage-digitag/ *Simulation participative de la gestion des ressources renouvelables dans des environnements hybrides* *Mots-clÃ©*: Simulation participative, Computer Vision , Smalltalk, Cormas * *DurÃ©e souhaitÃ©e du stageÂ (nombre de mois):*8 * *Date de dÃ©but du stage*: 1/02/2021 * *UnitÃ© de recherche*: Green, Cirad * *Contact*: Bommel Pierre : bommel(a)cirad.fr * *#DigitAg*: Axe 2 : Innovations en agriculture numÃ©rique, Axe 6 : ModÃ©lisation et simulation (systÃ¨mes de production agricole) / Challenge 1 :Â Le challenge agroÃ©cologique, Challenge 2 :Â Le phÃ©notypage rapide, Challenge 6 :Â La gestion des territoires agricoles, Challenge 7 :Â IntÃ©gration de lâagriculture dans les chaÃ®nes de valeur, Challenge 8 : DÃ©veloppement agricole au Sud Lâambition dâÃ©liminer les interfaces physiques qui permettent lâinteraction avec les machines est une idÃ©e ancienne dans le monde de lâinformatique qui a pris plusieurs directions. La plus emblÃ©matique pour le grand public a Ã©mergÃ© en 2005 sous le nom de âprojet Natalâ repris et dÃ©mocratisÃ© par Microsoft dans sa derniÃ¨re version baptisÃ©e âAzure Kinectâ (2019). Ce capteur dÃ©tecte les mouvements et les objets dans le champ de vision de lâutilisateur pour produire des rÃ©sultats dans un logiciel. Il a Ã©tÃ© abondamment dÃ©tournÃ© et enrichi depuis ses dÃ©buts grand public pour permettre de nouvelles maniÃ¨res dâinteragir avec les machines. Par ailleurs, le groupe de chercheurs Ã lâorigine de la crÃ©ation dâune plateforme de modÃ©lisation Ã base dâagents baptisÃ©e Cormas [1] fait actuellement face Ã des besoins accrus dâinteractivitÃ©s dans les simulations participatives. BasÃ©e sur le langage Smalltalk, Cormas est dÃ©veloppÃ©e depuis la fin des annÃ©es 1990 par une Ã©quipe fortement interdisciplinaire. Au-delÃ des usages traditionnels de la modÃ©lisation agents, Cormas se dÃ©marque des autres plateformes par des processus originaux de modÃ©lisation : lâapproche ComMod (pour Companion Modeling : modÃ©lisation dâaccompagnement [2]), qui vise Ã proposer des outils permettant de participer activement Ã la conception dâun modÃ¨le, mais aussi de sâimmerger dans des situations de jeux interactifs. Le jeu (de plateau ou informatisÃ©) sert alors de support pour Ã©changer sur une situation vÃ©cue. En 2012, pour la premiÃ¨re fois, lâÃ©quipe utilisait un video-projecteur Ã ultra-courte focale pour projeter sur une table un plateau de jeu. Ce simple changement a induit des comportements radicalement diffÃ©rents leur permettant une interaction beaucoup plus naturelle avec les simulations informatisÃ©es. En outre, la configuration spatiale des acteurs favorise les interactions sociales. Mais jusquâÃ aujourdâhui, la saisie manuelle par lâanimateur des dÃ©cisions prises par les joueurs reste nÃ©cessaire ce qui rÃ©duit la fluiditÃ© et la spontanÃ©itÃ© des interactions. LâÃ©quipe en charge du dÃ©veloppement de Cormas souhaite investiguer les possibilitÃ©s offertes par les nouvelles applications liÃ©es Ã la dÃ©tection dâobjets et de mouvements en portant un prototype de simulation participative dans le champ de la simulation hybride entre modÃ¨le informatique et jeu physique. Ce travail de preuve de concept appliquÃ© au modÃ¨le ReHab (modÃ¨le Ã©cole de ComMod) nÃ©cessitera de mettre au point des mÃ©thodes de dÃ©tection fiables dâobjets physiques pour Ãªtre intÃ©grÃ©es dans le calcul du nouvel Ã©tat simulÃ©. Aujourdâhui, Cormas sâappuie sur Pharo (Smalltalk open-source). Cette solution est dÃ©veloppÃ©e par lâINRIA et par un consortium de chercheurs et dâindustriels. La communautÃ© dynamique propose un ensemble de packages permettant de mutualiser le dÃ©veloppement de fonctionnalitÃ©s qui pourraient Ãªtre mobilisÃ©es pour proposer un prototype pour des simulation participative et la dÃ©tection dâobjets *English* : https://www.hdigitag.fr/en/digitag-master2-internship-offers/ *Participatory simulation of renewable resource management in hybrid environments* * *Keywords*: Participatory simulation, Computer Vision , Smalltalk, Cormas * *Duration*: 8 months * *Desired start date*: 1/02/2021 * *Research Unit*: Green, Cirad * *Contact*: Bommel Pierre â bommel(a)cirad.fr * *#DigitAg*: Axe 2,Axe 6 â Challenge 1,Challenge 2 ,Challenge 6 ,Challenge 7, Challenge 8 The ambition to remove the physical interfaces that allow interactions with computers is an old idea in the IT world that took several directions. The most emblematic one for the general public emerged in 2005 under the name of âProject Natalâ taken up and democratized by Microsoft in its latest version called âAzure Kinectâ (2019). This sensor detects movements and objects in the userâs field of vision to produce results in softwares.Â It has been abundantly diverted and enriched since its beginnings for the general public to allow new ways of interacting with computers. In addition, the group of researchers behind the development of an agent-based modeling platform called Cormas [1] is currently facing increased needs for interactivity in participatory simulations. Based on the Smalltalk language, Cormas has been developed since the late 1990s by a highly interdisciplinary team. Beyond the traditional uses of agent modeling, Cormas differs from other platforms by innovative modeling processes: the ComMod approach (Companion Modeling [2]), which aims to provide tools to actively participate in the design of a model, but also to immerse oneself in interactive game situations.Â The game (board or computer game) is then used as a support to exchange on a real-life situation. In 2012, for the first time, the team used an ultra-short focal projector to project a game board on a table. This simple change induced radically different behaviors of the actors allowing them to interact more naturally with computer simulations. In addition, the spatial configuration of the actors favors social interactions.Â But until today, manual input by the facilitator of the decisions taken by the players remains necessary, which reduces the fluidity and spontaneity of interactions. The team in charge of Cormasâ development wishes to investigate the possibilities offered by new opportunities related to the detection of objects and movements by bringing a prototype of participatory simulation in the field of hybrid simulation between computer model and physical game.This proof of concept work applied to the ReHab model (ComModâs school model) will require the development of reliable detection methods for physical objects to be integrated into the calculation of the new simulated state. Today, Cormas relies on Pharo (an open-source Smalltalk).Â This solution is implemented by INRIA and a consortium of researchers and industrialists. The dynamic community proposes a set of packages allowing to mutualize the development of functionalities that could be mobilized to propose a prototype for participative simulation and object detection

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Cairo rendering - why the difference between Pharo and VisualWorks - Quartz?
by Stewart Maclean Jan. 29, 2022

Jan. 29, 2022

Hi, I am working on a proof of concept reimplementation of an application developed in VisualWorks using Cairo and Pango. When I compare the renderings I see that the VisualWorks has a finer grained resolution. Initially I thought is was to do with my anti aliasing settings, but upon further investigation I'm wondering if it is because the VisualWorks uses the Quartz backend. Please see the attached for a comparison - Pharo rendering using Cairo and Pango on the left, VisualWorks using Cairo and Pango on the right. Notice the almost double the number of "pixels". I've tried switching to using the Quartz Athens surface, but nothing gets displayed. I would appreciate it if someone can confirm that my analysis is correct, and that in order to get the better results I would need to hook up to the Quartz backend? Thanks, Stewart

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Re: UK Smalltalk User Group Meeting - Wednesday, January 26th
by James Foster Jan. 18, 2022

Jan. 18, 2022

You are right that it is at 11:00 AM PST. I clicked on the link and didnât recognize that the web site set the time to my local timezone. Very nice! > On Jan 18, 2022, at 9:56 AM, Martin McClure <martin.mcclure(a)gemtalksystems.com> wrote: > > I believe this will be recorded. > And for someone it will be at 3AM. > In your time zone, James, I believe it will be at 11AM. > > Regards, > -Martin > > On 1/18/22 07:55, James Foster wrote: >> Will this be recorded for later viewing (for those of us who would prefer to be asleep at 3am)? >> >> James >> >>> On Jan 17, 2022, at 2:30 PM, Giovanni Corriga <giovanni(a)corriga.net <mailto:giovanni@corriga.net>> wrote: >>> >>> For our January meeting, we'll be hosting GemTalk's Martin McClure who will talk about a new Smalltalk IDE - Sparkle. >>> >>> If you're setting out to develop a Smalltalk IDE from scratch, what design decisions do you make? You'd love to "fix" the things that have long annoyed you in existing IDEs, but new designs risk creating their own novel annoyances. >>> The Sparkle project-in-progress is creating a new and not entirely conventional development environment for GemStone Smalltalk. Come see factors that have influenced its design, get a demo of the current state of the tools, learn about the project's next steps, and share *your* IDE annoyances. >>> >>> Martin heard about Smalltalk in 1975, *finally* got his hands on a running Smalltalk system ten years later, and hasn't let go since. In his 25 years on the GemStone team, Martin has worked on many aspects - some VM internals, some user interface design, but mostly all the things that go in between. In his rare spare time, he works on Mist, a Smalltalk variant with improved modularity and no virtual machine. When not dodging Covid, he does a lot of contra and country dancing. >>> >>> This will be an online meeting from home. >>> >>> If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/UKSTUG/events/282299228/ <https://www.meetup.com/UKSTUG/events/282299228/> ) to receive the meeting details. Donât forget to bring your laptop and drinks! >>> >> >

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UK Smalltalk User Group Meeting - Wednesday, January 26th
by Giovanni Corriga Jan. 18, 2022

Jan. 18, 2022

For our January meeting, we'll be hosting GemTalk's Martin McClure who will talk about a new Smalltalk IDE - Sparkle. If you're setting out to develop a Smalltalk IDE from scratch, what design decisions do you make? You'd love to "fix" the things that have long annoyed you in existing IDEs, but new designs risk creating their own novel annoyances. The Sparkle project-in-progress is creating a new and not entirely conventional development environment for GemStone Smalltalk. Come see factors that have influenced its design, get a demo of the current state of the tools, learn about the project's next steps, and share *your* IDE annoyances. Martin heard about Smalltalk in 1975, *finally* got his hands on a running Smalltalk system ten years later, and hasn't let go since. In his 25 years on the GemStone team, Martin has worked on many aspects - some VM internals, some user interface design, but mostly all the things that go in between. In his rare spare time, he works on Mist, a Smalltalk variant with improved modularity and no virtual machine. When not dodging Covid, he does a lot of contra and country dancing. This will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/UKSTUG/events/282299228/ ) to receive the meeting details. Donât forget to bring your laptop and drinks!

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Ubuntu update ... great!
by Norbert Hartl Jan. 15, 2022

Jan. 15, 2022

Just got an email this morning containing: The following packages are currently pending an upgrade: linux-firmware 1.187.25 pharo9 9.0.11-0 This feels great and is highly appreciated that we have that now. I hope we keep doing it like this. Thanks to Pablo and all that participated in that. Norbert

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Pharo VM Release - v9.0.11
by tesonep＠gmail.com Jan. 13, 2022

Jan. 13, 2022

Hello, I have released a new version of the Pharo VM for Pharo 9 and Pharo 10. This VM is accessible right now from Zero-Conf, updating it in the Pharo Launcher or using the usual downloads (as described in pharo.org/download) This version includes a series of minor bug fixes. Changelog: - Include FloatArrayPlugin in the build - Updating SDL2 to 2.0.18 for OSX X86_64 - Using Pharo 10 image as VMMaker image - Fixing issue in message counting on non-JIT VM Thanks a lot, and any doubt please let me know. Cheers, Pablo on behalf of the whole Pharo team. -- Pablo Tesone. tesonep(a)gmail.com

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[Pharo Days'22] Call for participation
by Guillermo Polito Jan. 10, 2022

Jan. 10, 2022

-------------------------------------------------------------------------------- Pharo Days March 3rd and 4th, Lille, France https://days.pharo.org/ -------------------------------------------------------------------------------- Do not miss the opportunity to meet Pharo and its community! PharoDays is a unique event where you can meet other Pharoers, discover latest advances, and share your experience. Hand-ons sessions are there to help you getting started on advance topics. Follow the "Show us your project" sessions to get immersed in Pharo lively community. This year, PharoDays is a mix of technical talks and hand-ons. Come to join business chat and enjoy friendly atmosphere and discuss with experts. Do you have a project to show? We are looking for presentations to fill up our schedule! Presentations will have 30' slots. Contact the Pharo board at <board(a)pharo.org> before January 21st with your ideas! Are you a student wanting to show your research project? We are going to organize poster sessions so you can show your work to the community! Prepare your posters, and contact us for a slot at <board(a)pharo.org>!

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Ghost subclass
by Robert Briggs Jan. 10, 2022

Jan. 10, 2022

Hi I currently have a problem that I am unable to resolve. I am working on a personal project. I created a Class âERAElementâ and four subclasses: âComponentâ, âCriticalIssueâ, âDecisionâ and âRequirementâ. A while ago I removed he subclass Component, and naturally Pharo will not let me create an instance of this subclasses.Â However it is still listed in the ERAElement subclass collection. As shown below. I can test for existence of each subclass as shown below: However the same code will not accept Component as a possible value. I can even create a new Subclass Component and get two (different) subclasses with the same name. Any thoughts as to what is going on and if so how to resolve the problem? Many thanks in advance for any and all feedback. Kind regards Robert Briggs

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FOSDEM2022
by Santiago Bragagnolo Jan. 6, 2022

Jan. 6, 2022

Hello everybody! This year I was not expecting to have stand since it seemed that there was no stands at all. But i was mistaken at many levels. Not only there are stands but also i did not have to do much for ensuring participation: We are on board. This year just as 2021 because of covid fosdem is online, as well as our stand. I invite you to get yourself in the stand online, and please tellme if there are news that are too old (besides the fact that we talk about pharo8, i clearly know that :P ), and things that you would like to add. https://stands.fosdem.org/stands/pharo/ Maybe books, videos, whatever. Thanks you all!

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Pharo-WebView
by TomaÅ¾ Turk Jan. 5, 2022

Jan. 5, 2022

Dear all, Pharo-WebView package is now available on GitHub at https://github.com/eftomi/Pharo-Webview. Pharo-WebView is a package which implements a binding to webview dll library available at https://github.com/webview/webview in Pharo. Webview allows you to show HTML user interfaces in a native window, inject JavaScript code and HTML content into the window. It renders HTML originating via web requests or as a direct input. I tested it on Windows 64 bit in Pharo 64, I plan to do that on Pharo 32 and Linux, however I don't have access to Mac, so if anybody is interested, I'd be grateful :-) Best wishes, Tomaz

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[ANN] Stargate-Consul v3.0.0 [v3.0.0] released!
by Buenos Aires Smalltalk Jan. 4, 2022

Jan. 4, 2022

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