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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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Backing up data
by sergio ruiz Feb. 19, 2024

Feb. 19, 2024

I have been in the relational database world for decades. One of the things that is super simple is backing up and restoring data. Sometimes, it makes it makes sense to pull the production data into development. In the case of a catastrophe, itâs super simple to restore data from a backup. I am thinking of backup strategies for my data once again, and am wondering if things have changed since I was last using smalltalk. I am thinking of the following: STON I could dump all of my data into STON, but there is one slight twist. In this project, itâs just making a list of movie listings. There are three basic classes: Theater, Movie, Event. Each of these classes stores an OrderedCollection of items of that type on a class variable, as Iâll need to access each on their own.. so, if an event has a theater, Iâll need to access Theaters on their own, and Movies on their own. So, I would have to rebuild the list of Theaters from the Theaters in each event. Otherwise, I would lose the link between the Theaters on the Theater class variable and the Theater in the Event instance. Am I thinking about this incorrectly? Gemstones I am totally into the idea of using gemstones. Is there a backup and restore for objects here? do the relationships remain? Voyage This seems like a good solution, but I would rather stay in the smalltalk object store. Ideas? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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[Pharo News] [Book] Testing in Pharo - 2023 Edition
by Marcus Denker Feb. 13, 2024

Feb. 13, 2024

[Book] Testing in Pharo - 2023 Edition https://www.pharo.org/news/2024-02-12-Book-Testing.html

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Call for presentation @ ESUG 2024
by stephane ducasse Feb. 13, 2024

Feb. 13, 2024

Dear friends Please distribute the following call ESUG 2024 Call for Presentations from 8 to 11 July 2024 Lille France https://esug.github.io https://esug.github.io/2024-Conference/conf2024.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/ - Submit a talk, software to the award competition, or a paper to IWST http://https://esug.github.io/2024-Conference/IWST2024.html - Attend the conference. We'd like to beat the previous record of attendance (180 people at Koln 2019)! - Students can get free registration and hosting if they enroll in 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 We added two types of sessions in addition to the regular talks and ''Show us your project'' sessions. - Show your business in a 10-minute session (Get prepared!!) - Teaching pearls: we want some sessions 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-minute sessions aggregated. ### How to submit? Make a Pull Request here https://github.com/ESUG/esug.github.io/tree/source/2024-Conference/talks [Or but only if you are not connected to the worldâ¦ send an email to stephane.ducasse(a)inria.fr] Title: [ESUG 2024] 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 Steven Costiou <steven.costiou at inria.fr> and Oleksandr Zaitsev <olk.zaytsev at gmail.com> with: title: [ESUG 2024 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 from 8 to 11 July 2024 (including nights from Sunday to Monday and from Wednesday to Thursday ). Students will be hosted in student rooms. ESUG additionally covers 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, that 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 a student volunteer, do not book yourself, we have arranged the booking already!

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A little post Why class number is an idiotic quality metric?
by stephane ducasse Feb. 11, 2024

Feb. 11, 2024

https://wordpress.com/post/pharoweekly.wordpress.com/4226 StÃ©phane Ducasse http://stephane.ducasse.free.fr 06 30 93 66 73 "If you knew today was your last day on earth, what would you do differently? ....ESPECIALLY if, by doing something different, today might not be your last day on earth.â Calvin & Hobbes

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This week (06/2024) on the Pharo Issue Tracker
by Marcus Denker Feb. 9, 2024

Feb. 9, 2024

# Pharo11 - Tolerate halt when handling a OSWindowEvent #16095 https://github.com/pharo-project/pharo/pull/16095 # Networking - Improved error handling around sending data in Socket/SocketStream (fixes #15614) #15984 https://github.com/pharo-project/pharo/pull/15984 # Tools - New settings browser #681 https://github.com/pharo-spec/NewTools/pull/681 - File Dialog: Add dynamic preview #682 https://github.com/pharo-spec/NewTools/pull/682 - Add DoIt in background and a toolbar button to cancel the current exeâ¦ #672 https://github.com/pharo-spec/NewTools/pull/672 # Graphics - Add #scale and #formSet:at:sourceRect:rule: to Canvas hierarchies and #blendAlphaScaled for Form #16090 https://github.com/pharo-project/pharo/pull/16090 - Make ScalingCanvas avoid converting a Form in a FormSet for lookup in the FormMapping #16089 https://github.com/pharo-project/pharo/pull/16089 - Tolerate halt when handling a OSWindowEvent #16088 https://github.com/pharo-project/pharo/pull/16088 # Refactoring Eingine - Refactor: extract method transformation build transformations #16125 https://github.com/pharo-project/pharo/pull/16125 - Cleanup: push down instance variable breaking changes #16113 https://github.com/pharo-project/pharo/pull/16113 - Refactor: make pull up class variable same as pull up instance variable #16112 https://github.com/pharo-project/pharo/pull/16112 - Refactor: remove method new architecture #16107 https://github.com/pharo-project/pharo/pull/16107 - Refactor: remove preconditions from extract method's buildTransformations #16102 https://github.com/pharo-project/pharo/pull/16102 - Refactor: remove unused swap method refactoring #16101 https://github.com/pharo-project/pharo/pull/16101 - Refactor: preconditions of add method and migrate to new architecture #16098 https://github.com/pharo-project/pharo/pull/16098 - RB: Just renamed two classes #16097 https://github.com/pharo-project/pharo/pull/16097 # Bootstrap - Avoid merged tags without abbrev parameter for vm download in bootstrap script #16124 https://github.com/pharo-project/pharo/pull/16124 - Avoid merged tags for vm download in bootstrap script #16121 https://github.com/pharo-project/pharo/pull/16121 - Update bootstrap process to refer to Pharo12 #16021 https://github.com/pharo-project/pharo/pull/16021 # Cleanup - 15965-CI-Failing-tests-on-the-CI-ReleaseTeststestThatThereAreNoSelectorsRemainingThatAreSentButNotImplemented #16115 https://github.com/pharo-project/pharo/pull/16115 - 16053-RGMethodDefinitionstoreOn-should-not-be-an-extension #16116 https://github.com/pharo-project/pharo/pull/16116 - 16057-Cleanup-use-cascaded-nextPutAll-in-LocaleIDstoreOn #16100 https://github.com/pharo-project/pharo/pull/16100 - Array>>#displayString should be part of Kernel and not an override from NewTools #16069 https://github.com/pharo-project/pharo/pull/16069 - Display methods should be in "displaying" protocol #16058 https://github.com/pharo-project/pharo/pull/16058

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Open PhD position on debugging at Inria Lille
by Steven Costiou Feb. 8, 2024

Feb. 8, 2024

Hello, we have a PhD position opening at Lille, France. See all details here: https://recrutement.inria.fr/public/classic/fr/offres/2024-07154 Steven. _Summary of the research proposal:_ ### Application development inevitably introduces bugs. Often, it's not clear why a code change introduced a bug. To find this cause-and-effect relationship and debug more efficiently, developers can sometimes rely on the existence of a previous version of the code without the bug. Yet, traditional debugging tools are not designed for this kind of work, making it a tedious operation. In this thesis, we propose an approach that enables us to understand and to debug an application in a LIVE SYSTEM, such as Pharo or Python, by comparing two executions with different results: one execution succeeds and the other fails. Based on this hypothesis, we propose in this thesis to answer the following challenges: - How to detect divergence, i.e. different behavior between two executions of a program? - How can we reduce the cost in time, memory and energy consumption of detecting divergence(s) on long executions? - What are the criteria for deciding whether a divergence is normal or unauthorized? - What about detecting multiple divergences in the same program? - What abstractions are needed to compare two executions of a program and detect divergences? To meet these challenges, in addition to a precise state-of-the-art on debugging techniques, the PhD student will study concrete cases of program execution and propose a tool to be integrated into Pharo.

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This week (05/2024) on the Pharo Issue Tracker
by Marcus Denker Feb. 2, 2024

Feb. 2, 2024

# Fixes - Fixes for browsing a package from a repository using Calypso #16009 https://github.com/pharo-project/pharo/pull/16009 - add a missing method ClyOldMessageBrowserAdapter #16083 https://github.com/pharo-project/pharo/pull/16083 - Fix String method causing multiple problems #16081 https://github.com/pharo-project/pharo/pull/16081 - SycBrowseClassCommand fix for Browse to class in method editor #16066 https://github.com/pharo-project/pharo/pull/16066 - Deprecations from SUnit testcases should be raised #16036 https://github.com/pharo-project/pharo/pull/16036 - Fixing object class initialize #16033 https://github.com/pharo-project/pharo/pull/16033 - adding an ifEmpty guard in RubTextSegmentMorph>>#computeStraightVertices to prevent a random CI crash #16016 https://github.com/pharo-project/pharo/pull/16016 # Enhancements - Use newtools for progressbars #16075 https://github.com/pharo-project/pharo/pull/16075 - Expand the dependency analyzer roots by default #16074 https://github.com/pharo-project/pharo/pull/16074 - Rework MorphTreeMorph, MorphTreeNodeMorph and SimpleHierarchicalListMorph to remove sends of #treeExpandedForm and #treeUnexpandedForm #16043 https://github.com/pharo-project/pharo/pull/16043 - Make FTBasicTreeListItem use a FormSet for the expand/collapse toggle #16037 https://github.com/pharo-project/pharo/pull/16037 - Move the call of the Deprecation>>transform to the Deprecation>>defaultAction #16040 https://github.com/pharo-project/pharo/pull/16040 # Refactoring Engine - Cleanup: RBMetaclass>>#realName: #16061 https://github.com/pharo-project/pharo/pull/16061 - Cleanup: small refactoring cleanups #16048 https://github.com/pharo-project/pharo/pull/16048 - Refactor: remaining preconditions #16044 https://github.com/pharo-project/pharo/pull/16044 - Refactor: rename preconditions of pacakge refactoring #16028 https://github.com/pharo-project/pharo/pull/16028 - Refactor: another pass on cleaning and splitting preconditions #16026 https://github.com/pharo-project/pharo/pull/16026 - Refactor: VariableRefactoring doesn't override preconditions #16023 https://github.com/pharo-project/pharo/pull/16023 - Refactor: change method name preconditions #16022 https://github.com/pharo-project/pharo/pull/16022 - Refactor refactoring preconditions #16020 https://github.com/pharo-project/pharo/pull/16020 # Cleanups - Change #notNil into #isNotNil in Fuel test packages #16071 https://github.com/pharo-project/pharo/pull/16071 - Cleanup: Fix lint in MetaLinkAnonymousClassBuilderTest>>#testCompileCâ¦ #16063 https://github.com/pharo-project/pharo/pull/16063 - Replaced aCollection asOrderedCollection copy to OrderedCollection withAll: aCollection #16032 https://github.com/pharo-project/pharo/pull/16032 - Add two tests for the class StringTest #16031 https://github.com/pharo-project/pharo/pull/16031 - Fix #16024 remove dead code #16025 https://github.com/pharo-project/pharo/pull/16025

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