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Pharo @ ESUG'23
by Guillermo Polito Sept. 13, 2023

Sept. 13, 2023

Hi all, for those that were not at ESUG, we did a small write-up about the Pharo activity at the conference. https://wordpress.com/post/thepharo.dev/1957 <https://wordpress.com/post/thepharo.dev/1957> Cheers, Guille

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[Success Story] PLC3000: All-in-One Solution for Teaching Factory Automation
by Marcus Denker Sept. 12, 2023

Sept. 12, 2023

PLC3000: All-in-One Solution for Teaching Factory Automation https://pharo.org/success/PLC3000.html PLC3000 is the 1st turnkey web solution for industrial automation training. It combines pedagogical content with interactive and engaging programmable simulated benches implemented using PharoJS. PLC3000 won the 3rd prize of the ESUG 2023 edition of the Innovation Technology Awards. Being 100% online, PLC3000 requires only a web browser. It can be used to teach remotely, in person or hybrid classes. It works even for large groups of students. Request your free demo! Main features of PLC3000: â¢ Diverse themed exercise catalog with gamified simulations of industrial system models. â¢ Self-training tutorials for industrial automation, allowing unsupervised learning. â¢ Vendor-agnostic PLC simulator supporting multiple programming languages from the IEC 61131 standard: Ladder Diagram (LD), Instruction List (IL), Structured Text (ST), Sequential Function Chart (SFC). â¢ Pedago-focus all-in-one web platform: Always ready, up-to-date, accessible 24/7 from anywhere. â¢ Interactive PLC inspector for live program analysis and debugging. â¢ Online help explaining concepts in all supported programming languages. https://plc3000.com/

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Pharo 11 Spec2 Problem with Transmissions
by voxkmp＠gmail.com Sept. 9, 2023

Sept. 9, 2023

Hi - I thought I'd use Spec2 transmissions to implement an album exporer. that is, a list of albums next to a list of the tracks on that album next to some information about the track: A structure like this: albumlist ==> trackList ==> track details I've had no trouble connecting the album list to the track list, but I cannot connect the tracklist to a label (or textInput for that matter) to show any track details. I'm using Pharo 11. **defaultLayout** ^ SpBoxLayout newHorizontal add: (albumListPresenter); add: (trackListPresenter ); add:(writerPresenter); yourself **initializePresenters** albumListPresenter := self newList. albumListPresenter display: \[ :item | item displayString\]. albumListPresenter items: Repository albums. trackListPresenter := self newList. trackListPresenter display: \[ :item | item displayString\]. writerPresenter := self newLabel. **connectPresenters** "The first transmission works perfectly" albumListPresenter transmitTo: trackListPresenter transform: \[ :anAlbum | anAlbum tracks \]. "But this similar one does not work - aTrack appears to be null.". trackListPresenter transmitTo: writerPresenter transform: \[ :aTrack | aTrack writerDetails \]. There are obviously other ways to code this but I thought transmissions would be a good fit here yet I can't quite make it work. Any help appreciated. Ken

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This week (36/2023) on the Pharo Issue Tracker
by Marcus Denker Sept. 8, 2023

Sept. 8, 2023

# Features - Allow formatting the contents of a Playground #14602 https://github.com/pharo-project/pharo/pull/14602 - Search strings without symbols using RB pattern matcher #14604 https://github.com/pharo-project/pharo/pull/14604 - Make unwind more flexible #14610 https://github.com/pharo-project/pharo/pull/14610 - Update Roassal version v1.03 #14615 https://github.com/pharo-project/pharo/pull/14615 # Fixes - Make finalization registry entry removal O(1) #14068 https://github.com/pharo-project/pharo/pull/14068 - Fix check already-existing extension in Path>>withExtension: (fixes #14594) #14595 https://github.com/pharo-project/pharo/pull/14595 - Use separate bind and listen primitives instead of combined listenOn:â¦ family #14593 https://github.com/pharo-project/pharo/pull/14593 - Monticello: try to fix flacky test #14606 https://github.com/pharo-project/pharo/pull/14606 - Monticello: avoid double loading of class definition #14609 https://github.com/pharo-project/pharo/pull/14609 - Kernel: Speedup #isObsolete #14608 https://github.com/pharo-project/pharo/pull/14608 # Font / Text Rendering - Add âscaleâ parameter for displaying strikeouts and underlines through fonts #14574 https://github.com/pharo-project/pharo/pull/14574 - Fix FormCanvas string drawing to use the strikethrough color for displaying the strikeout #14573 https://github.com/pharo-project/pharo/pull/14573 - Remove unused instance variables and methods from CharacterScanner and RubCharacterScanner hierarchies #14572 https://github.com/pharo-project/pharo/pull/14572 # RPackage - Increase usage of new API in MCOrganizationDefinition #14512 https://github.com/pharo-project/pharo/pull/14512 - RPackage: clean API of RPackage #14581 https://github.com/pharo-project/pharo/pull/14581 - Gofer: Remove update of categories #14584 https://github.com/pharo-project/pharo/pull/14584 - RPackage: simplify class removal #14579 https://github.com/pharo-project/pharo/pull/14579 - RPackage: Remove empty tag while removing its last class #14590 https://github.com/pharo-project/pharo/pull/14590 - RPackage: Remove in image users of MCOrganizationDefinition categories #14591 https://github.com/pharo-project/pharo/pull/14591 # Cleanup - Reduce UIManager dependencies: #14601 https://github.com/pharo-project/pharo/pull/14601 - Remove UIManager dependencies! #581 https://github.com/pharo-spec/NewTools/pull/581 - Reduce UIManager (hidden) dependencies #1445 https://github.com/pharo-spec/Spec/pull/1445 - TestRunner removal #14607 https://github.com/pharo-project/pharo/pull/14607 - Metacello: Remove unused tests resources #14620 https://github.com/pharo-project/pharo/pull/14620 - Use new API of ClassFactoryForTestCase #571 https://github.com/pharo-spec/NewTools/pull/571 - One less + automatic rewriting #1447 https://github.com/pharo-spec/Spec/pull/1447

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The worst programmer
by Christian Haider Sept. 6, 2023

Sept. 6, 2023

Today there was a link in the Daily Insider [1] to a really nice blog post [2] featuring Tim Mackinnon as the worst programmer. Congratulations Tim :) Cheers, Christian [1] https://www.codeproject.com/script/Mailouts/View.aspx?mlid=17447 <https://www.codeproject.com/script/Mailouts/View.aspx?mlid=17447&_z=1343394 6> &_z=13433946 [2] https://dannorth.net/2023/09/02/the-worst-programmer/

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This week (35/2023) on the Pharo Issue Tracker
by Marcus Denker Sept. 4, 2023

Sept. 4, 2023

# Fonts - Extend FreeTypeCache to support different scales #14544 https://github.com/pharo-project/pharo/pull/14544 - Add âscaleâ parameter for displaying strings using a StrikeFont, FixedFaceFont or LogicalFont #14563 https://github.com/pharo-project/pharo/pull/14563 - Add âscaleâ parameter for displaying strings using a FreeTypeFont #14503 https://github.com/pharo-project/pharo/pull/14503 - Remove StrikeFontSet and StrikeFontSetStoredSetting (bis) #14549 https://github.com/pharo-project/pharo/pull/14549 - Remove StubFixedFont #14550 https://github.com/pharo-project/pharo/pull/14550 - Fix bugs in display of wide characters through StrikeFont #14543 https://github.com/pharo-project/pharo/pull/14543 # RPackage - RPackage: Simplify method additions in tests #14566 https://github.com/pharo-project/pharo/pull/14566 - RPackage: Unify creation of packages from extension protocols #14551 https://github.com/pharo-project/pharo/pull/14551 - Monticello: Announce MethodAdded when compiling a method whose prior method is from a different origin #14565 https://github.com/pharo-project/pharo/pull/14565 - RPackage: #packageTag should work on class side #14561 https://github.com/pharo-project/pharo/pull/14561 - RPackage: #packageTag should always return a tag #14556 https://github.com/pharo-project/pharo/pull/14556 - RPackage: Iteration on tag API in RPackage #14548 https://github.com/pharo-project/pharo/pull/14548 - RPackage: Do not repackage methods twice #14538 https://github.com/pharo-project/pharo/pull/14538 - RPackage: Remove duplicated classes infos #14513 https://github.com/pharo-project/pharo/pull/14513 - RPackage: Clean package tag API #14539 https://github.com/pharo-project/pharo/pull/14539 - RPackage: Simplify protocol manipulation #14537 https://github.com/pharo-project/pharo/pull/14537 - RPackage: Remove #systemCategories #14517 https://github.com/pharo-project/pharo/pull/14517 - RPackage: Try to fix CI failure #14530 https://github.com/pharo-project/pharo/pull/14530 # Refactoring Eingine - Fix: update test expected results #14545 https://github.com/pharo-project/pharo/pull/14545 - Refactorings: Remove categories from environments and clean the code #14546 https://github.com/pharo-project/pharo/pull/14546 - Refactor: replace message sends #14522 https://github.com/pharo-project/pharo/pull/14522 - Enh/cleaning breaking changes #14516 https://github.com/pharo-project/pharo/pull/14516 # Fixes - Speedup key combination for all items selection in Test Runner #14534 https://github.com/pharo-project/pharo/pull/14534 - Update Calypso after removal of a new package. #14531 https://github.com/pharo-project/pharo/pull/14531 - Calypso: Prevent the recategorization of removed methods #14555 https://github.com/pharo-project/pharo/pull/14555 # Cleanup - Fix: #14541: Remove multiple methods does not work anymore #14560 https://github.com/pharo-project/pharo/pull/14560 - Reduce UIManager (hidden) dependencies #1445 https://github.com/pharo-spec/Spec/pull/1445

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This week (34/2023) on the Pharo Issue Tracker
by Marcus Denker Aug. 25, 2023

Aug. 25, 2023

# This week (34/2023) on the Pharo Issue Tracker Due to Holiday season not much happend, but both the Refactorig and RPackage improvements continued to see some actions. # Refactoring Engine - Fix: enable push down method for concrete classes #14500 https://github.com/pharo-project/pharo/pull/14500 - Cleanup: rename primitive execute #14506 https://github.com/pharo-project/pharo/pull/14506 # RPackage - Packages: Introduce new API in MCOrganizationDefinition #14509 https://github.com/pharo-project/pharo/pull/14509 - RPackage: Simplify actions of method modifications #14510 https://github.com/pharo-project/pharo/pull/14510 - RPackage: Simplify class import #14507 https://github.com/pharo-project/pharo/pull/14507 - RPackage: Clean bootstrap initialization #14462 https://github.com/pharo-project/pharo/pull/14462 - RPackage: Fix some flacky tests #14487 https://github.com/pharo-project/pharo/pull/14487 - Save real classes in RPackage #14501 https://github.com/pharo-project/pharo/pull/14501 # Cleanup - Simplify FixedFaceFont by removing âdisplaySelectorâ #14508 https://github.com/pharo-project/pharo/pull/14508 - Removing references to text editor #14496 https://github.com/pharo-project/pharo/pull/14496

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This week (33/2023) on the Pharo Issue Tracker
by Marcus Denker Aug. 18, 2023

Aug. 18, 2023

# Pharo 11 - [P11] Adding a nice error for loadSymbol #14452 https://github.com/pharo-project/pharo/pull/14452 # Features - Add #enumerationsDo: and #enumerationsOfSize: #13952 https://github.com/pharo-project/pharo/pull/13952 # Fixes - Fix BrowseIt for Classes https://github.com/pharo-project/pharo/pull/14481 https://github.com/pharo-project/pharo/pull/14482 https://github.com/pharo-spec/Spec/pull/1439 https://github.com/pharo-spec/Spec/pull/1438 - Remove events for the existing ChangesLog when installing NoChangesLog #14477 https://github.com/pharo-project/pharo/pull/14477 - Fix bug in #rubParagraph:bounds:color: in PluggableCanvas #14479 https://github.com/pharo-project/pharo/pull/14479 - Make methods in the UITheme hierarchy take the display scale factor into account #14464 https://github.com/pharo-project/pharo/pull/14464 # RPackage Cleanup - RPackage: Fix failing tests #14494 https://github.com/pharo-project/pharo/pull/14494 - RPackage: Make Gofer cleanup use Package API #14488 https://github.com/pharo-project/pharo/pull/14488 - Use new API of ClassFactoryForTestCase #1432 https://github.com/pharo-spec/Spec/pull/1432 # Refactoring Engine - Refactoring: Use less categories in RBMoveClassTransformation #14492 https://github.com/pharo-project/pharo/pull/14492 - Fix: make class abstract #14469 https://github.com/pharo-project/pharo/pull/14469 - Make Remove instance variables works well on a list using a new compoâ¦ #14475 https://github.com/pharo-project/pharo/pull/14475 - Creating less blocks instead of using simple temporaries. #14478 https://github.com/pharo-project/pharo/pull/14478 - Cleanup: rename all conditions to preconditions #14484 https://github.com/pharo-project/pharo/pull/14484 - Refactor: move-to-class-side uses composite refactoring #14489 https://github.com/pharo-project/pharo/pull/14489 - Refactorings: Remove category environment #14493 https://github.com/pharo-project/pharo/pull/14493

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Embedding FAUST in Pharo - meet the FAUST team in Lyon
by Sebastian Jordan Montano Aug. 17, 2023

Aug. 17, 2023

Here is a message from Domenico: I tried to sent an email about this to the Pharo mailing list, but I am not sure it was forwarded. so: as ESUG in Lyon this year, I was chatting with some people of the FAUST (https://faust.grame.fr/) team at GRAME (https://www.grame.fr/) about my live coding with Pharo, the music with Pharo and if we could find a way to embed the Faust compiler in Pharo (https://faustdoc.grame.fr/manual/embedding/) one of the guys of the team would like to meet me during ESUG most probably with the director scientifiche Yann Orlarey. I told him that maybe the best thing is to join us for our usual beer-after-conference, maybe on Tuesday or on Thursday. if anybody wants to participate at the informal meeting, please express a preference about the day and time :). last but not least, GRAME is now part of INRIA,( https://team.inria.fr/emeraude/) looking forward for your reply, Pharo + FAUST could be a really cool thing. p.s. they would like to listen at to my talk on Monday morning but I guess this is a question for the esug-mailing list

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AST vs. Bytecode Interpreters
by Steffen MÃ¤rcker Aug. 15, 2023

Aug. 15, 2023

Hi folks! Today I found this interesting paper via Stefan Marr on the performance differences of ast vs. bytecode interpreters (for meta compilation): https://stefan-marr.de/downloads/oopsla23-larose-et-al-ast-vs-bytecode-inte… It was a really interesting read. I do not remember seeing this on the list. If it was, please apologize double posting. Cheers! Steffen

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