February 2024 - Pharo-users

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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Is there a reason for the removal of Promises?
by donald.bryant.rich＠gmail.com Feb. 29, 2024

Feb. 29, 2024

Hi. I was hoping to use the Promise class as documented in the book on âConcurrent Programming in Pharoâ but it appears that they are not present in the latest version. Instead there is a TKTPromise class that has no slots or methods. Is there a reason for not having the Promise class before the implementation of TKTPromise? Thank you

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Mailing list issues
by Hans-Martin Mosner Feb. 29, 2024

Feb. 29, 2024

Hi, I already wrote to pharo-users-owner(a)lists.pharo.org, but don't know how well that is monitored, at least I did not see an effect up to now (it's not been a lot of time, though). The mailing list is using a badly configured server, and that causes mail to be rejected. Host "lists.pharo.org" has IP address 176.58.125.247, and that's the address mails are being sent from. The PTR for that IP address is "prod3.harmonylists.io", which is apparently a name given by the provider. However, the domain registration for harmonylists.io seems to have expired, and the domain grabber who took it now points the domain to IP address 15.197.172.60. Postfix doesn't like that and therefore refuses to accept mail from that IP address. Please, whoever has a contact to either the pharo list maintainers or the mailing list provider, get them to fix this. Cheers, Hans-Martin

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[Success Story] ApptiveGrid - Digitize and Automatize Business Processes
by Marcus Denker Feb. 27, 2024

Feb. 27, 2024

New Story posted on the Website: ApptiveGrid - Digitize and Automatize Business Processes https://www.pharo.org/success/ApptiveGrid.html Marcus

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This week (08/2024) on the Pharo Issue Tracker
by Marcus Denker Feb. 24, 2024

Feb. 24, 2024

# Fixes / Improvements - Implement Process>>state as the single source of truth for #isX methods (implements #14904) #16072 https://github.com/pharo-project/pharo/pull/16072 - Fix SDL2 class>>primCreateRGBSurfaceForCairoWidth:height: #16223 https://github.com/pharo-project/pharo/pull/16223 - add a way to allow some obsoletes through an environment variable #16222 https://github.com/pharo-project/pharo/pull/16222 - 16132-Caret-return-char-broken-in-Pharo-11-macOS-Keyboard-as-US-International---PC #16206 https://github.com/pharo-project/pharo/pull/16206 - Fix tests in metacello, Spec font chooser and date comments #16195 https://github.com/pharo-project/pharo/pull/ # Tools - Improving Message list morph UI #16096 https://github.com/pharo-project/pharo/pull/16096 - Do not show preview presenter when not needed #696 https://github.com/pharo-spec/NewTools/pull/696 - Align suffixes of FileBrowser #706 https://github.com/pharo-spec/NewTools/pull/706 - move edit path button close to the path #705 https://github.com/pharo-spec/NewTools/pull/705 - Add new folder button to file browser #704 https://github.com/pharo-spec/NewTools/pull/704 - Prevent errors in file operations. #703 https://github.com/pharo-spec/NewTools/pull/703 - Allow to sort some file browser columns #701 https://github.com/pharo-spec/NewTools/pull/701 - Catch preview errors in FileBrowser #700 https://github.com/pharo-spec/NewTools/pull/700 # Refactoring Engine - Fix: extract method failing tests #16198 https://github.com/pharo-project/pharo/pull/16198 - Refactor: push down method driver #16197 https://github.com/pharo-project/pharo/pull/16197 # Cleanup - Enhancement check keyword casing via lint rule #16220 https://github.com/pharo-project/pharo/pull/16220 - Fix: failing CI tests #16199 https://github.com/pharo-project/pharo/pull/16199 - Cleanup: Move more deprecated method to Deprecated12 #16194 https://github.com/pharo-project/pharo/pull/16194 - Cleanup: Small glitch in AsciiCharset class>>#toLowercase: #16192 https://github.com/pharo-project/pharo/pull/16192 - Cleanup: Cleanup Character protocols #16190 https://github.com/pharo-project/pharo/pull/16190 - Cleanup: Move deprecated #allCharacters to Deprecated12 package #16188 https://github.com/pharo-project/pharo/pull/16188 - Cleanup: deprecate nominallyUnsent: #16183 https://github.com/pharo-project/pharo/pull/16183 - DateAndTime asXXX methods should not be in accessing protocol #16181 https://github.com/pharo-project/pharo/pull/16181

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UKSTUG Meeting 28 February 2024: Juan Vuletich - Bootstrap & Dynamic Cuis Libraries
by Giovanni Corriga Feb. 23, 2024

Feb. 23, 2024

Juan Vuletich returns to the UKSTUG to discuss some recent enhancements to Cuis Smalltalk ( https://cuis.st/ ) : Bootstrap and Dynamic Cuis Libraries. Bootstrap: Creating Minimal Images from Scratch > * The last ancestor of Cuis Smalltalk that was bootstrapped from scratch was Smalltalk-76. Since then, various released images of Smalltalk-80, Squeak and Cuis were derived by applying updates to the previous one. A new tool called 'Bootstrap' allows the creation of minimal Smalltalk images from scratch. These images are in the Spur 32 and 64-bit formats, compatible with the OpenSmalltalk VM. 'Bootstrap' gives developers complete control over what is included in the new image. It is compact, relatively simple, and easy to extend and adapt. Dynamic Cuis Libraries: A binary format for Cuis code that is powerful and quick to load > * Dynamic Cuis Libraries are binary files with pre-compiled code that can be loaded into a running Cuis image. They can add new classes and extend existing ones. For existing classes, there are no requirements on the shape of that class in the image loading the library. Missing variables are added, extra variables are kept, and both existing and newly loaded methods are adjusted to whatever shape the class has. Juan Vuletich ( https://independent.academia.edu/JuanVuletich ) is the founder and lead developer of Cuis Smalltalk. He is a long-standing Open Source Smalltalk community member, having contributed kernel code to Cuis, Squeak and the Squeak VM for over 25 years. Juan has been programming since he was 14, and doing it professionally since he was 17. He holds an MS.Sc. in Computer Science from the University of Buenos Aires. He works at LabWare. 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/299084123/ ) to receive the meeting details. Donât forget to bring your laptop and drinks!

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"Print it" redirection
by Rene Paul Mages (ramix) Feb. 22, 2024

Feb. 22, 2024

Hello Pharo Community, Output unix-redirection like the following is very useful : ls -al ./Pharo > Pharo-dir.txt <Help> I want to write in a file the "print-it" output of the following Pharo message : 1000 factorial Please give me a good track. </Help> -- All the best Rene Paul Mages (ramix) GnuPG key : 0x9840A6F7 http://sites.google.com/view/les-logiciels-libres/pharo http://nosoftwarepatents.wikidot.com/smalltalk http://twitter.com/RenePaulMages

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This week (07/2024) on the Pharo Issue Tracker
by Marcus Denker Feb. 21, 2024

Feb. 21, 2024

# This week (07/2024) on the Pharo Issue Tracker # Fixes - Replace $r key combination in method editor pane #16168 https://github.com/pharo-project/pharo/pull/16168 - Fix SDL2 binding #16165 https://github.com/pharo-project/pharo/pull/16165 - 16161-Clean-up-undeclared-assumes-all-undeclared-are-globals #16162 https://github.com/pharo-project/pharo/pull/16162 - 15733-OldClassDefinitionBuilder-needs-to-support-usesinstanceVariableNames #16151 https://github.com/pharo-project/pharo/pull/16151 - Fix hierarchical implementors bug #16150 https://github.com/pharo-project/pharo/pull/16150 - restore SystemProgressMorph dectivation #16143 https://github.com/pharo-project/pharo/pull/16143 # Refactoring Engine - Fix: extract method command #16179 https://github.com/pharo-project/pharo/pull/16179 - Refactor: extract method transformation improvements #16178 https://github.com/pharo-project/pharo/pull/16178 - Make addReturn answer the receiver #16170 https://github.com/pharo-project/pharo/pull/16170 - Test for semantics of extract method transformation and additional code supporting it #16167 https://github.com/pharo-project/pharo/pull/16167 - 16153-AST-testIsClean-and-testHasNonLocalReturn-failing-and-more #16159 https://github.com/pharo-project/pharo/pull/16159 - Test: semantics of extract method transformation #16158 https://github.com/pharo-project/pharo/pull/16158 - 16133 transforming deprecation should not raise a debugger by default but rewrite the code #16157 https://github.com/pharo-project/pharo/pull/16157 - Add exact commit and tag information in recorded metacello directives #16155 https://github.com/pharo-project/pharo/pull/16155 - Feat: extract method source string api #16154 https://github.com/pharo-project/pharo/pull/16154 - Cleanup: isDirectlyUsed and isUsed #16146 https://github.com/pharo-project/pharo/pull/16146 # Cleanup - Rename RPackage-Tests #16120 https://github.com/pharo-project/pharo/pull/16120 - Integrate BeautifulComments directly into Pharo #16176 https://github.com/pharo-project/pharo/pull/16176 - #asUncommentedCode is deprecated, we can remove the test #16152 https://github.com/pharo-project/pharo/pull/16152 - 16055-Cleanup-uses-cascaded-nextPutAll-in-ObjectstoreOn #16142 https://github.com/pharo-project/pharo/pull/16142 - fix: #16137 remove grapoh viz support from Dependency analysis since â¦ #16138 https://github.com/pharo-project/pharo/pull/16138 - More GraViz cleanups #16139 https://github.com/pharo-project/pharo/pull/16139

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