June 2025 - Pharo-users - lists.pharo.org

Re: New Circular Buffer Implementation for Pharo

by Richard O'Keefe

My own Smalltalk library (and yes, I've tried to put it on github, I don't know what I'm doing wrong) includes Deque and BoundedDeque, both descendants of Collection. Using addLast/removeLast gives you a stack (use #last for peeking) Using addLast/removeFirst gives you a queue. (use #first for peeking) (1) I am puzzled why there are separate FIFO and LIFO classes rather than a single BoundedDeque. -- This has implications for performance. (2) I am puzzled why #withCapacity: is used rather than #new:, familiar from OrderedCollection. -- These two points together make it hard to just swap OrderedCollection and ?IFOBuffer. (3) I am puzzled why #clear is used instead of the familiar #removeAll. -- See note on question 2. (4) I am extremely puzzled why ALL, like ALL, of the internals of the data structure are exposed. Did encapsulation fall out of favour and I didn't get the memo? (5) It looks as though calling #capacity: at the wrong time can destroy the integrity of one of these containers, but there is nothing sayiing "don't do that". (6) I am puzzled that they are not Collections. (7) I am puzzled why trying to access an element in an empty buffer does not signal a CollectionIsEmpty exception -- Is this related to (6)? The structure, with two separate classes and key performance-essential methods being template methods, hurts performance by about a factor of two in my tests. Now Pharo has a design MOOC and if Stephane Ducasse says "this is great", these things that puzzle me must be good design. I would like to improve my skills, so *why* is this good design? (As it happens, I *have* had occasion to 'push' from both ends of a single Deque.) None of this is meant as criticism of the generosity or competence of the authors. It expresses genuine puzzlement. Like when I implemented deques I could not imagine not making them Collections. Principle of Least Surprise and all that. Maybe I should be thinking differently. On Fri, 27 Jun 2025 at 20:10, stephane ducasse via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Thanks this is great! > > On 18 Jun 2025, at 12:13, Alok via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Hello Everyone, > We're excited to share a new addition to the pharo-containers. An efficient Circular Buffer implementation, developed as part of Google Summer of Code 2025 project under the mentorship of Gordana Rakic and Sebastian Jordan MontaÃ±o. > > This package provides fixed-size buffers supporting both FIFO (queue-style) and LIFO (stack-style) behavior. Itâs designed for use cases such as streaming data, undo/redo functionality, chat or browser history & more. > > You can find the repo here: Containers-Buffer > The README includes usage examples, installation steps etc. > > Feedback, suggestions, and contributions are very welcome ! > ThankYou ! > Alok Pathak > GSoC'25 Contributor > > > 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 > > > > >

June 27, 2025

Re: New Circular Buffer Implementation for Pharo

by stephane ducasse

Thanks this is great! > On 18 Jun 2025, at 12:13, Alok via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Hello Everyone, > We're excited to share a new addition to the pharo-containers <https://github.com/pharo-containers>. An efficient Circular Buffer implementation, developed as part of Google Summer of Code 2025 project under the mentorship of Gordana Rakic and Sebastian Jordan MontaÃ±o. > > This package provides fixed-size buffers supporting both FIFO (queue-style) and LIFO (stack-style) behavior. Itâs designed for use cases such as streaming data, undo/redo functionality, chat or browser history & more. > > You can find the repo here: Containers-Buffer <https://github.com/pharo-containers/Containers-Buffer> > The README includes usage examples, installation steps etc. > > Feedback, suggestions, and contributions are very welcome ! > ThankYou ! > Alok Pathak > GSoC'25 Contributor 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

June 27, 2025

[ANN] Pharo 13.1 released

by Esteban Lorenzano

Hi, We just released Pharo 13.1 with some quality of life improvements we merged since version 13.0: Whatâs Changed * update new tools to v0.10.4 and spec to v2.0.3 by @estebanlm in https://github.com/pharo-project/pharo/pull/18313 * bump iceberg to v2.4.1 by @estebanlm in https://github.com/pharo-project/pharo/pull/18210 * Fix for #18225: Be robust against unintentionally sending #initialize to a Trait (Pharo 13) by @MarcusDenker in https://github.com/pharo-project/pharo/pull/18238 * [P13 Backport] Fix: Rubric error when jumping to previous word and string begins with separators by @Gabriel-Darbord in https://github.com/pharo-project/pharo/pull/18232 * [Pharo13] Adding validation of the hierarchy for all the slots by @tesonep in https://github.com/pharo-project/pharo/pull/18243 * Fix closing window shortcuts in combination with window groups by @guillep in https://github.com/pharo-project/pharo/pull/18116 * Fixing the Toplo Version by @tesonep in https://github.com/pharo-project/pharo/pull/18263 * [Pharo13] Update Roassal to new Released version by @tesonep in https://github.com/pharo-project/pharo/pull/18262 * Fix cursor on multiple OSWindows by @tinchodias in https://github.com/pharo-project/pharo/pull/18280 * Backport #18289 to P13: Fix Duplicate class refactoring by @jecisc in https://github.com/pharo-project/pharo/pull/18290 * rename examples and ClapHelp command by @demarey in https://github.com/pharo-project/pharo/pull/18312 *Full Changelog*: https://github.com/pharo-project/pharo/compare/v13.0.0...v13.1.0 Cheers, Esteban 

June 26, 2025

[ANN] Advanced-Design MOOC on Youtube

by Marcus Denker

All the videos from the Advanced-Design MOOC are now available on our YouTube channel Inria Learning Lab in a dedicated playlist. This gives you easy access to the 65 MOOC videos and helps you focus on the topics that interest you most. Check it out here: https://www.youtube.com/playlist?list=PL2okA_2qDJ-k9qaQomNEoAo_sA2LsE2Y3 More about the MOOC: https://www.fun-mooc.fr/en/courses/advanced-object-oriented-design-and-deve… Inria Learning Lab Channel: https://www.youtube.com/@inrialearninglab

June 26, 2025

Re: Alt-Tab equivalent inside Pharo

by Aik-Siong Koh

Ctrl-Shift-Tab doesn't work with Playground. Other Pharo windows work, but once Playground is hit, the command doesn't work anymore. Alternating between Ctrl-Tab and Ctrl-Shift-Tab is very awkward and slow. I really want to flip rapidly to compare two windows using "flicker comparison". Tim Mackinnon wrote: > Curious - I loaded up P13 (which I've not had a chance to give a spin) > - and the ctrl-tab implementation is not LRU so its not like OS Window > flipping. > > I couldn't see an option to set this, so it looks like an > "enhancement" might be needed. There were some excellent addons that > gave this kind of behaviour in the past, so i'm pretty sure we could > get get something working again - as I also like to flip between > windows (and they appear in the tab bar isn't that useful in my mind). > > Tim > > On Sun, 22 Jun 2025, at 10:54 PM, Renaud de Villemeur via Pharo-users > wrote: >> Ctrl-Tab and Ctrl-Shift-Tab works in Pharo 13. I'm not sure if it was >> implemented in previous version. >> >> Renaud >> >> >> >> Jun 21, 2025, 22:11 by pharo-users(a)lists.pharo.org: >> >> Hi: >> >> In Windows OS, Alt-Tab switches between the two past OS windows. >> It is very convenient for flipping between two OS windows to >> compare or view. >> >> I want to do the same for Pharo windows. How? >> >> Thanks, >> Aik-Siong Koh >> >> >

June 23, 2025

Re: Alt-Tab equivalent inside Pharo

by Tim Mackinnon

Curious - I loaded up P13 (which I've not had a chance to give a spin) - and the ctrl-tab implementation is not LRU so its not like OS Window flipping. I couldn't see an option to set this, so it looks like an "enhancement" might be needed. There were some excellent addons that gave this kind of behaviour in the past, so i'm pretty sure we could get get something working again - as I also like to flip between windows (and they appear in the tab bar isn't that useful in my mind). Tim On Sun, 22 Jun 2025, at 10:54 PM, Renaud de Villemeur via Pharo-users wrote: > Ctrl-Tab and Ctrl-Shift-Tab works in Pharo 13. I'm not sure if it was implemented in previous version. > > Renaud > > > > Jun 21, 2025, 22:11 by pharo-users(a)lists.pharo.org: >> Hi: >> >> In Windows OS, Alt-Tab switches between the two past OS windows. >> It is very convenient for flipping between two OS windows to compare or view. >> >> I want to do the same for Pharo windows. How? >> >> Thanks, >> Aik-Siong Koh >

June 22, 2025

Re: Alt-Tab equivalent inside Pharo

by Renaud de Villemeur

Ctrl-Tab and Ctrl-Shift-Tab works in Pharo 13. I'm not sure if it was implemented in previous version. Renaud Jun 21, 2025, 22:11 by pharo-users(a)lists.pharo.org: > Hi: > > In Windows OS, Alt-Tab switches between the two past OS windows. > It is very convenient for flipping between two OS windows to compare or view. > > I want to do the same for Pharo windows. How? > > Thanks, > Aik-Siong Koh >

June 22, 2025

Alt-Tab equivalent inside Pharo

by Aik-Siong Koh

Hi: In Windows OS, Alt-Tab switches between the two past OS windows. It is very convenient for flipping between two OS windows to compare or view. I want to do the same for Pharo windows. How? Thanks, Aik-Siong Koh

June 22, 2025

Pharo News of the Week 25/2025

by Marcus Denker

- GitProjectHealth: A Mining Software Repository and Ticket management Platform tool, in Pharo https://github.com/moosetechnology/gitprojecthealth - [ANN] Pharo client libraries for Google Cloud Platform services https://github.com/newapplesho/google-cloud-smalltalk - ESUG Tech Awards 2025: Deadline June 30 https://esug.org/2025-Conference/awardsCall2025.html - [ANN] Containers-Buffer: Circular buffer implementation with LIFO and FIFO variants https://github.com/pharo-containers/Containers-Buffer - [ANN] Hera, a BDD framework for Pharo https://all-objects-all-the-time.st/#/blog/posts/14 If you want to add your news to this list, use this form: https://tinyurl.com/4c89buy4 # The week on the Pharo Issue Tracker # Pharo 13 - Backport #18289 to P13: Fix Duplicate class refactoring #18290 https://github.com/pharo-project/pharo/pull/18290 - Fix cursor on multiple OSWindows #18280 https://github.com/pharo-project/pharo/pull/18280 - backport modal testing #1783 https://github.com/pharo-spec/Spec/pull/1783 # Fixes - New Cavrois Integration block in Morphic to cut direct code #18288 https://github.com/pharo-project/pharo/pull/18288 - Fix multiple Rubric examples and add smoke tests #18281 https://github.com/pharo-project/pharo/pull/18281 - Fix MessagTally>>exampleSpyForSeconds #18278 https://github.com/pharo-project/pharo/pull/18278 - Cut cyclic dependency in Zinc #18109 https://github.com/pharo-project/pharo/pull/18109 # Completion - Adding fetcher to NecEntry and subclasses #18269 https://github.com/pharo-project/pharo/pull/18269 # Refactoring Engine - Fix Duplicate class refactoring if there are spaces in package or package tag #18289 https://github.com/pharo-project/pharo/pull/18289 - Fix pullUpMethod in presence of used instance variables #18285 https://github.com/pharo-project/pharo/pull/18285 # Tools - Fix example of StOpenFilePresenter #1169 https://github.com/pharo-spec/NewTools/pull/1169 - Fix ProtocolChooserPresenter #1168 https://github.com/pharo-spec/NewTools/pull/1168 - renamed menu items / usage of strategies to position back windows #1167 https://github.com/pharo-spec/NewTools/pull/1167 - Improve new transcript #1166 https://github.com/pharo-spec/NewTools/pull/1166 - Fix for okbutton rename protocol #1165 https://github.com/pharo-spec/NewTools/pull/1165 # Git Support - Fix some failing tests #1944 https://github.com/pharo-vcs/iceberg/pull/1944 - Fix git direct access to repository #1940 https://github.com/pharo-vcs/iceberg/pull/1940 - Added SyncToFiles command #1936 https://github.com/pharo-vcs/iceberg/pull/1936 # Cleanup - Remove dead code in PasteUpMorph #18279 https://github.com/pharo-project/pharo/pull/18279

June 20, 2025

Pharo Paper Collection: Papers wanted!

by Marcus Denker

Hello, As you might know, we have started to collect all papers / books that are related to Pharo. This is on HAL (https://hal.science) an international repository for open science that is used by the french science community (e.g. Inria and CNRS). The platform is open to anyone and after some years of iteration, it starts to be really quite nice. "HAL is a multidisciplinary open archive for the sharing of published and unpublished research. It is at the service of researchers in academic institutions, both public and private. In France, HAL is the national archive chosen by the scientific and academic community for the open dissemination of its research results. The repository is also at the service of researchers affiliated to foreign academic institutions, whether public or private.â More infos here: https://about.hal.science/en/ The Pharo collection on HAL now contains over 200 entries. The collection includes papers/books that are either about Pharo or use it in some way. https://hal.science/PHARO The HAL Monitor provides some more stats: https://monitor.hal.science/?collection=PHARO Of course, there are only those papers in the archive that the orginal authors added (and tagged for the Pharo Collection). To check if your paper is there, the easiest is to check the authors: https://inria.hal.science/PHARO/browse/author How do I add my papers? ===================== The HAL platform is open to everyone. https://hal.science - create an account - start submission by clicking submit. You are asked for all information / the PDF of your paper. - In the META Data: add âPHAROâ in the field âCollaboration/Projectâ. After the paper is validated, it will show up in the PHARO collection around one day later. If your paper is already in HAL: just modify the meta data and add âPHAROâ in the field âCollaboration/Projectâ

June 20, 2025