October 2021 - 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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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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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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How to flatten traits
by Jupiter Jones Nov. 22, 2021

Nov. 22, 2021

Hi All, There used to be a method to #flattenDownTraits that I canât find the equivalent in Pharo 8. How do you go about flattening traits now? Thanks for any advice. Cheers, J

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Strategies for (re)using HTTP client
by Esteban Maringolo Nov. 3, 2021

Nov. 3, 2021

Hi, I happened to me more than once that I have to create some REST service "client" in which I usually wrap an HTTP client inside (ZnClient in this case), and all the calls to the service, end up using the HTTP client, inside some mutex to serialize the execution. But I don't like that, in particular when some endpoints are better with streaming responses (large downloads) and I have to fiddle with the client and set it back to the settings before executing the request. So, long story short... is it always safer to instantiate a new ZnClient on a per request basis since no state is shared, but I guess it is also less effective if I'm performing several requests to the same server. What are the recommended approaches here? Esteban A. Maringolo

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[ANN] Last Day for JRMPC Registration
by horrido.hobbies＠gmail.com Oct. 31, 2021

Oct. 31, 2021

We only have 10 registrations. This is a major disappointment. Why the low turnout? We believe itâs because of the pandemic. High school students are tired and stressed out. The last thing theyâre thinking about is a programming competition. We will make the best of a bad situation. The competition will proceed as planned. Here is the Competition Format: [Competition Format â Object-Oriented (wordpress.com)](https://jrmpc2022.wordpress.com/2021/09/02/competition-form…) This event will be a lead-up to Camp Smalltalk Supreme next June. Both are part of the anniversary celebration of Smalltalk.

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How to indent block of text
by horrido.hobbies＠gmail.com Oct. 23, 2021

Oct. 23, 2021

Has indenting text changed in Pharo? Ctrl-Alt-R and Ctrl-Alt-L donât work for me anymore. Thanks.

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Book the dates: Pharo Days 2021: 3/4 March 2022 @ Lille
by stephane ducasse Oct. 22, 2021

Oct. 22, 2021

Dear Pharoers We are super excited to announce the dates of the next Pharo Days. Pharo Days 2021 will be held at Lille 3/4 March 2022 We will set soon a program and a website. Stay tuned. S.

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Create keyboard shortcut
by mspgate＠gmail.com Oct. 20, 2021

Oct. 20, 2021

Hello everybody, how would I create a keyboard shortcut for a method I have defined in my class or package? for example if I would like to have a keyboard shortcut for a method that opens the Transcript and display the âHello I am the new shortcutâ message? thanks for the help. peace.d

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Artefact utf8-textjustify and pagination
by Oswall Verny Arguedas C. Oct. 19, 2021

Oct. 19, 2021

Greetings, I am starting with Artefact for pdf in Seaside App. Documents are contracts. I do not achieve the following functions: -Justification of text in paragraphs. -Pagination. -Letters with accents Ã¡ Ã© Ã Ã³ Ãº Ã± Ã (utf8) or (iso8859-1). These functions are possible?. Thanks in advance Oswall

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Splitting a single HTTP Request into multiple concurrent requests
by Sven Van Caekenberghe Oct. 19, 2021

Oct. 19, 2021

Hi, Somebody asked how you would split single HTTP Request into multiple concurrent requests. This is one way to do it. Upfront I should state that - I do no think this is worth the trouble - It is only applicable to large downloads (even larger than in the example) - The other side (server) must honour Range requests correctly (and be fast) This one is based on the data used in the ZnHTTPSTest(s)>>#testTransfers units test. More specifically the files available under https://s3-eu-west-1.amazonaws.com/public-stfx-eu/ such as https://s3-eu-west-1.amazonaws.com/public-stfx-eu/test-2050.txt for the smallest one. sizes := (Integer primesUpTo: 100) collect: [ :each | 1024 * each + each ]. size := sizes last. concurrency := 11. step := size // concurrency. ranges := (0 to: size - 1 by: step) collect: [ :each | { each. (each + step) min: size } ]. chunks := Array new: ranges size. done := Semaphore new. ms := 0. [ ms := Time millisecondClockValue. ranges withIndexDo: [ :range :index | [ | client | (client := ZnClient new) https; host: 's3-eu-west-1.amazonaws.com'; addPath: 'public-stfx-eu'. client addPath: ('test-{1}.txt' format: { size }). client headerAt: #Range put: ('bytes={1}-{2}' format: range). client get. client close. chunks at: index put: client contents. done signal ] forkAt: Processor lowIOPriority ]. ranges size timesRepeat: [ done wait ]. ms := Time millisecondsSince: ms. (String empty join: chunks) inspect. ] fork. This takes about 2 seconds total for me. [ ZnClient new https; host: 's3-eu-west-1.amazonaws.com'; addPath: 'public-stfx-eu'; addPath: 'test-99425.txt'; get. ] timeToRun. Which is roughly similar to the single request (again, for me). Two things to note: connection time dominates, in the parallel case, 11 independent requests were executed, so concurrency is definitively happening. The largest size file is just 100k, split in about 10 parts, which is most probably not enough to see much effect from doing things in parallel. HTH, Sven

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Virtual Reality-based programming environment
by Alexandre Bergel Oct. 18, 2021

Oct. 18, 2021

Hello, We are a small and energetic team who want to push the state of the art in Virtual Reality-based programming environment. We have an advanced prototype, and we need help of participants to be part of our experiment involving our software called VRIDE, a fully immersive VR programming tool. In this experiment: â¢ You will be given a set of tasks to perform using our platform. The experiment should not take more than 1 - 1.5 hours. â¢ After that, you will have to answer some surveys and other final questions. If you know how to program in Pharo, have access to a any VR device, such as Oculus Quest or HTC Vive, and would like to be part of the experiment, please reply to this email. The overall experiment is very enjoyable, fun, and you will experience what we will believe programmers will use in the future. We hope you are part of this. Regards, Victor Segura, Leonel Merino, Alexandre Bergel and Geoffrey Hecht -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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UK Smalltalk User Group meeting - Wednesday, October 27th
by Giovanni Corriga Oct. 8, 2021

Oct. 8, 2021

For this month's meeting, Cincom Smalltalk ( https://www.cincomsmalltalk.com/main/ ) product manager Arden Thomas will discuss recent product changes and improvements and demonstrate some tools and features of ObjectStudio and VisualWorks 9.1. Arden ( https://twitter.com/ArdenTCST ) started working with Smalltalk in 1986, looking for a better way to do software development â and he found it. Arden built factory floor layout tools for IBM, worked at ParcPlace as an SE, an instructor, and consultant, and at a hedge fund building financial analysis tools. Arden is currently the product manager for Cincom Smalltalk. 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/280378922 ) to receive the meeting details. Donât forget to bring your laptop and drinks!

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possible dates for Pharo Days 2022 :)
by stephane ducasse Oct. 7, 2021

Oct. 7, 2021

Hello guys We are super excited because we want to organise PharoDays at Lille We are checking some possible dates and we would like to know your point of view. right now we were thinking that 3/4 or 10/11 march would be good. So let us know. S

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Maintainer of smalltalk.org?
by James Foster Oct. 6, 2021

Oct. 6, 2021

I recently came across smalltalk.org <http://smalltalk.org/> and am curious to know who maintains it. I tried sending an email to the contact but the address bounced. Thanks! James Foster

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