March 2024 - 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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Open Call: Object-Centric Breakpoints experiment
by Steven Costiou May 14, 2024

May 14, 2024

Dear Community, as part of a research project in the EVREF team, we are looking for people to participate to an empirical experiment on object-centric breakpoints - a debugging tool present in Pharo 9. Many people from the community already participated, and we thank them very much ð We are still looking for participants, we need 40 people to do the experiment! Please help us, in return it helps us understand better our tools and their impact and therefore build better tools for the Pharo community! For those who want to know a bit more, see my original email below. For those who just want to jump at the experiment, you can go there https://github.com/Pharo-XP-Tools/XPImageGeneration/tree/exp-ocd Thanks in advance ð Steven. --- We would like to invite you to participate to our experimental study on Object-Centric Breakpoints. This study aims to evaluate and to understand how Object-Centric Breakpoints impacts the debugging activity. This experiment takes place in **Pharo 9**. In this experiment, we ask you to solve 2 debugging tasks, one with standard Pharo tools and one other with Object-Centric Breakpoints. Between the two tasks, you will have to follow a tutorialand warmup tasks to learn how to use the tool. **How to Participate:** All instructions are here, please read them carefully: https://github.com/Pharo-XP-Tools/XPImageGeneration/tree/exp-ocd **About the Experiment:** The experiment last between 40 minutes and 2 hours. Participants should have experience with Pharo development and debugging. We recommend having more than 6 months experience in Pharo and debugging in general. You will gain insights into the Object-Centric Breakpoints approach and contribute to advancements in debugging research. Help us to build better debugging tools that help you debug! **Some constraints:** - You are not allowed to load external tools and baselines, but you can use anything that is in the base image - Please do the experiment in one shot if possible without interruptions - The experiment sends anonymous data to our inria server, please make sure that you have a valid internet connection - Please try to use the object-centric breakpoints when the experimental framework asks you to **Notes:** Participation is voluntary, and everything is anonymous. You can abandon the experiment at any point (and your data will be discarded). For any question, you can contact us: steven.costiou(a)inria.fr and valentin.bourcier(a)inria.fr Thank you for considering participating in our study. Your contribution will be valuable in advancing the field of debugging and helping us understand what tools we need to build for Pharo. Sincerely, Steven and Valentin, EVREF team, Inria

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The System Browser has recently started showing 2 comments tabs - one is text and one is formatted pretty. That seems odd and is not wanted - has anyone else seen this? Pharo 10 stable image - windows 64 - all reloaded recently...
by mark.odonoghue.2010＠gmail.com May 12, 2024

May 12, 2024

![Image](https://media.discordapp.net/attachments/223421264751099906/1060833258427920385/image.png)

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Books about Pharo
by stephane ducasse April 3, 2024

April 3, 2024

Hi Richard I did not see your original post because I messed up with my account. But thanks for your email :) Now the cool stuff if that we can also read the books from within Pharo. We should improve the Microdown renderer and suddenly we will get shiny cool documentation. S > This is a new thread because it's not limited to any specific topic. > > If you have questions about Pharo, especially "how do I do <this> in > Pharo", you can always ask in this mailing list. You can, if you like > playing Russian Roulette, ask a Large Language Model "AI". > > But there is an amazing resource you should really trye. > > books.pharo.org > > Did you ever wonder where the manual for Pharo was? > That's where. The site lists a bunch of Pharo books and booklets, > all of which have free PDFs except for two of the books. > In particular, you'll always want the most recent edition of > "Pharo by Example" handy. > > These books are really useful. They are written by people know know > their material thoroughly and do a good job of explaining it. If you > want to make any serious use of Pharo, or even to have more happiness > than headaches just playing with it, you owe it to yourself to get the > free PDFs What do we owe the authors? Well, if you're not trying to > make one pension support four people, you owe them the purchase of > some of the books. Me, I'm giving them thanks, praise, and a > heartfelt recommendation. > > Seriously, these books represent a HUGE amount of work and "you are a > fool to yourself and a burden to others" if you don't take advantage > of this great resource.

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# This week (13/2024) on the Pharo Issue Tracker
by Marcus Denker March 29, 2024

March 29, 2024

# Fixes - Adapt #getVolumeInfo:into:size: for StWin32Info to strict FFI #729 https://github.com/pharo-spec/NewTools/pull/729 - Take the selector into account in #AdditionalMethodState>>#analogousCodeTo: #16302 https://github.com/pharo-project/pharo/pull/16302 - Add override for #drawPolygon:fillStyle:borderWidth:borderColor: on ScalingCanvas to avoid conversion of the second argument to a Color #16304 https://github.com/pharo-project/pharo/pull/16305 - Make #contentsMenu: on WorldMorph use the FormSet for each of the icons #16317 https://github.com/pharo-project/pharo/pull/16317 - Change â./$0â to â$0â in recursive retry command in script âgetPharoVM.shâ #16337 https://github.com/pharo-project/pharo/pull/16337 - ZnHeaders does not understand isNotEmpty #16339 https://github.com/pharo-project/pharo/pull/16339 - Move archival of â*.xmlâ and â*.fuelâ files in âJenkinsfileâ to the âfinallyâ block #16341 https://github.com/pharo-project/pharo/pull/16341 - remaining morphic dialogs: aligning the default option to right #16352 https://github.com/pharo-project/pharo/pull/16352 # Tools - fixes #16315 dependency browser layout feels wrong #16343 https://github.com/pharo-project/pharo/pull/16343 - enable / disable syntax highlight in code presenter of critics browser. #727 https://github.com/pharo-spec/NewTools/pull/727 # Cleanup - Remove StWindowsExtensionsTest #728 https://github.com/pharo-spec/NewTools/pull/728 - Remove #createTab from ClyBrowserToolMorph #16318 https://github.com/pharo-project/pharo/pull/16318 - Remove old backward compatibility code from FFILibrary #16349 https://github.com/pharo-project/pharo/pull/16349

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This week (12/2024) on the Pharo Issue Tracker
by Marcus Denker March 25, 2024

March 25, 2024

# Features - Adding tests for debug points + integrating debug points to Calypso Browser #16268 https://github.com/pharo-project/pharo/pull/16268 - add uFFI convenience methods #16320 https://github.com/pharo-project/pharo/pull/16320 # Fixes - 16321-Method-with-an-highlighted-warning-or-error-is-kept-when-deleting-the-offending-text #16322 https://github.com/pharo-project/pharo/pull/16322 - Protect with a mutex the transcript update #16311 https://github.com/pharo-project/pharo/pull/16311 - 15841-ZeroDivide-when-selecting-idea11-icons #16309 https://github.com/pharo-project/pharo/pull/16309 - 14700-Shortcut-text-is-not-displayed-correctly-on-a-Mac #16307 https://github.com/pharo-project/pharo/pull/16307 - Fix parsing twice per keystroke in Calypso #16306 https://github.com/pharo-project/pharo/pull/16306 - NativeBrowserOpenVisitor requires typing for strict FFI #16325 https://github.com/pharo-project/pharo/pull/16325 - 15564-No-menubar-in-Mac-OS-Sonoma #16297 https://github.com/pharo-project/pharo/pull/16297 - Refactor RubTextSegmentMorph to support use of a FormSet #16323 https://github.com/pharo-project/pharo/pull/16323 - Make #taskbarButtonMenu: on SystemWindow and MorphicNativeWindow use the FormSet for each of the icons #16296 https://github.com/pharo-project/pharo/pull/16296 - Make #initializeFor: on TaskbarItemMorph use the FormSet for the icon #16316 https://github.com/pharo-project/pharo/pull/16316 - 16332-Bug-in-Transcript #16334 https://github.com/pharo-project/pharo/pull/16334 - Change #transformBy:clippingTo:during:smoothing: on FormCanvas to use BitBlt combination rule 34 instead of 24 #16303 https://github.com/pharo-project/pharo/pull/16303 - remove wrong name #16331 https://github.com/pharo-project/pharo/pull/16331/files - Add pre-filling the name text presenter in file dialogs #717 https://github.com/pharo-spec/NewTools/pull/717 - Allowing to use Texts as HelpText of Presenters #1529 https://github.com/pharo-spec/Spec/pull/1529 # Tools - fix-critics-browser-issue #724 https://github.com/pharo-spec/NewTools/pull/724 - Fixing Version Browser Presenter #721 https://github.com/pharo-spec/NewTools/pull/721 - Showing CMD character in OSX in Spotter #720 https://github.com/pharo-spec/NewTools/pull/720 - Improvements to the Scopes Editor and integration with Pharo #718 https://github.com/pharo-spec/NewTools/pull/718 # Breakpoints - Debug Point Browser integration #697 https://github.com/pharo-spec/NewTools/pull/697 # Refactoring Engine - 16326-Realize-class-menu-option-throws-error-on-any-class #16333 https://github.com/pharo-project/pharo/pull/16333 - Makes user defined scopes available in Refactoring User Interfaces #15918 https://github.com/pharo-project/pharo/pull/15918 - Fix: remove extract method transformation from UI #16301 https://github.com/pharo-project/pharo/pull/16301

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"The Classification Model" â New blog post on all: objects all: theTime
by Koen De Hondt March 19, 2024

March 19, 2024

Dear Pharo users and developers, Last week I told you about a new blog post that outlined the objectives of the Atlas browser. It was the first post of a series. If you liked it, I invite you to read the next post <https://all-objects-all-the-time.st/#/blog/posts/7>. It describes the Classification Model, which is the foundation of Atlas. Happy reading! Ciao, Koen

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UKSTUG Meeting - Maximiliano Tabacman: Electronic Roleplaying Assistant - 27 March 2024
by Giovanni Corriga March 19, 2024

March 19, 2024

In this presentation, Maximiliano Tabacman will be presenting the main features, abstractions and design decisions behind ERA, the Electronic Roleplaying Assistant ( https://preview.drivethrurpg.com/en/product/137825/ERA-for-Rolemaster ). ERA is currently being used to create characters and manage the adventures of many gaming groups across the world, supporting Navigator RPG, Against the Darkmaster, Rolemaster Classic, Rolemaster Fantasy and Rolemaster Unified. We will review how Pharo allows creating a deployed version that runs locally in Linux, Mac and Windows, while Digital Ocean and Auth0 allow running an online server with different user roles. https://pharo.org/success/RolPlayingAssistant.html We will also mention how ERA makes use of the different frameworks developed and maintained by the Buenos Aires Smalltalk group, hosted at Github. Maximiliano Tabacman ( https://www.linkedin.com/in/maximiliano-tabacman-9aa4b817b/ ) is a long time Smalltalker with a Phd from the University of Buenos Aires. He is a Software architect at Mercap, executive secretary at FAST and creator of ERA. 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/299364517/ ) to receive the meeting details. Donât forget to bring your laptop and drinks!

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String concatenation performance
by Noury Bouraqadi March 18, 2024

March 18, 2024

> I thought streamContents: was faster than using a comma binary message... I was wrong. Pharo is not Java :-) Noury "Run in P11" a := 'aaaaa'. > b := 'bbbbb'. > c := 'ccccc'. > d := 'ddddd'. > e := 'eeeeee'. > [ a , b , c , d , e ] bench. > "'3958888.090 per second'" > "'3808242.503 per second'" > [ > String streamContents: [ :str | > str > << a; > << b; > << c; > << d; > << e ] ] bench > "'3083603.838 per second'" > "'2927641.144 per second'" a := 'aaaaa'. > b := 'bbbbb'. > c := 'ccccc'. > d := 'ddddd'. > e := 'eeeeee'. > [ a , b , c , d , e ] bench. > "'3958888.090 per second'" > "'3808242.503 per second'" > [ > String streamContents: [ :str | > str > << a; > << b; > << c; > << d; > << e ] ] bench > "'3083603.838 per second'" > "'2927641.144 per second'" a := 'aaaaa'. b := 'bbbbb'. c := 'ccccc'. d := 'ddddd'. e := 'eeeeee'. [ a , b , c , d , e ] bench. "'3958888.090 per second'" "'3808242.503 per second'" [ String streamContents: [ :str | str << a; << b; << c; << d; << e ] ] bench "'3083603.838 per second'" "'2927641.144 per second'"

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This week (11/2024) on the Pharo Issue Tracker
by Marcus Denker March 15, 2024

March 15, 2024

With the freeze, we will see now less PRs being integrated, most of them fixes and tests. If you see bugs in Pharo 12, make sure to check that it is reported on the issue tracker! # Fixes - fix calypso close button #16295 https://github.com/pharo-project/pharo/pull/16295 - Fixing issue #16291 - RBRemoveDirectAccessToVariableTransformationTest is failing #16293 https://github.com/pharo-project/pharo/pull/16293 - Fixes issue: RB - Undo refactoring sometimes not only undo the last changes of refactoring #8103 #16285 https://github.com/pharo-project/pharo/pull/16285 - Update Roassal to v1.06 #16287 https://github.com/pharo-project/pharo/pull/16287 - Remove use of âset -eâ from script âgetPharoVM.shâ #16282 https://github.com/pharo-project/pharo/pull/16282 - Prevents asking for user input twice during the Pushing up method refactoring #16281 https://github.com/pharo-project/pharo/pull/16281 - 16233-ChangeRecordtimeStamp-calls-deprecated-method #16254 https://github.com/pharo-project/pharo/pull/16254 - Fix title display in File Presenter windows #716 https://github.com/pharo-spec/NewTools/pull/716 # Improvements - Add pre-filling the name text presenter in file dialogs #717 https://github.com/pharo-spec/NewTools/pull/717 - Adding tests for debug points + integrating debug points to Calypso Browser #16268 https://github.com/pharo-project/pharo/pull/16268 - Make #taskbarButtonMenu: on SystemWindow and MorphicNativeWindow use the FormSet for each of the icons #16296 https://github.com/pharo-project/pharo/pull/16296 - Refactor MenuItemMorph, PluggableMenuItemSpec and PragmaMenuAndShortcutRegistrationItem to support use of a FormSet and apply that to CmdCommand #16201 https://github.com/pharo-project/pharo/pull/16201

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