January 2021 - Pharo-dev - lists.pharo.org

This week (04/2021) on the Issue Tracker

by Marcus Denker

If you want to help, a nice first step to get familiar with improving the system is to review Pull Requests. For example, there are always very simple ones (like the ones listed here in "Cleanup Unused Variablesâ) that are fairly easy to understand and review. Open Pull requests are here: https://github.com/pharo-project/pharo/pulls Debugger improvements and Fixes =========================== - Added empty selection interval to force SpCodePresenter to auto-scroll. #8428 https://github.com/pharo-project/pharo/pull/8428 - OCDoitTest-testDoItContextReadIvar #8437 https://github.com/pharo-project/pharo/pull/8437 - 7763-Does-BlockClosurecull-need-the-pragma-debuggerCompleteToSender #8427 https://github.com/pharo-project/pharo/pull/8427 - Inspecting a Text no longer shows the formatted text #8352 https://github.com/pharo-project/pharo/issues/8352 Refactoring Improvements ======================== - Fix broken tests - extract method and ocurrences #8420 https://github.com/pharo-project/pharo/pull/8420 - RB - Add message to kwon how many occurrences were replaced #8380 https://github.com/pharo-project/pharo/pull/8380 Fixes ===== - 8168-CompiledMethodreferencedClasses-should-not-take-class-variables-into-account #8240 https://github.com/pharo-project/pharo/pull/8240 - Mouse events were sent twice when using an event handler #8404 https://github.com/pharo-project/pharo/pull/8404 - Mouse over event is sent multiple times #8401 https://github.com/pharo-project/pharo/pull/8401 - Improve the Help for Spec2 #8410 https://github.com/pharo-project/pharo/pull/8410 - Fix a regression from earlier pharo that used to perserve order in sequences #8402 https://github.com/pharo-project/pharo/pull/8402 Cleanup Unused Variables ========================= - spec1-clean-ivars #8431 https://github.com/pharo-project/pharo/pull/8431 - remove two unused ivars in GT-Tests #8432 https://github.com/pharo-project/pharo/pull/8432 - Remove-unused-vars-RB #8422 https://github.com/pharo-project/pharo/pull/8422 -RBExtractMethodAndOccurrences-unused-ivar #8425 https://github.com/pharo-project/pharo/pull/8425 - 8354-SycRemoveMessageArgumentCommand-with-unused-ivar #8419 https://github.com/pharo-project/pharo/pull/8419

Jan. 29, 2021

Re: Look for software for virtual outing

by askoh

Thanks. I think my employer, MathWorks, can find VR capabilities very interesting. Its Mission is: "Our goal is to change the world by accelerating the pace of discovery, innovation, development, and learning in engineering and science. We work to provide the ultimate computing environment for technical computation, visualization, design, simulation, and implementation. We use this environment to provide innovative solutions in a wide range of application areas." I hope we can try Terf. All the best, Aik-Siong Koh -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html

Jan. 27, 2021

Re: Look for software for virtual outing

by Eliot Miranda

Hi Koh, On Tue, Jan 26, 2021 at 1:22 PM askoh <askoh(a)askoh.com> wrote: > Hi: > > My team at work has been asked to organize a "Virtual Outing" for > socializing or camaraderie. I am think of using a Smalltalk virtual reality > software for such an outing. > > Would any of Qwaq, Tref, Croquet be viable VR platforms for a group of less > that 50 people? > Absolutely. We're running trials with as many as 85 participants right now. So any number from 1 to 85 is definitely possible, and we haven't hit the limit on the number of participants yet. However, Terf is built by 3D ICC above Squeak. I work full time for 3D ICC. We don't use Pharo.m Please get in touch with Ron Teitelbaum to discuss usage. I've cc'ed him (Hi Ron). > Thanks, > Aik-Siong Koh > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html > _,,,^..^,,,_ best, Eliot

Jan. 26, 2021

Look for software for virtual outing

by askoh

Hi: My team at work has been asked to organize a "Virtual Outing" for socializing or camaraderie. I am think of using a Smalltalk virtual reality software for such an outing. Would any of Qwaq, Tref, Croquet be viable VR platforms for a group of less that 50 people? Thanks, Aik-Siong Koh -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html

Jan. 26, 2021

Fwd: [Esug-list] URGENT - Fully funded Research Internship for Smalltalk programmer

by StÃ©phane Ducasse

> Begin forwarded message: > > From: Simon Holland via Esug-list <esug-list(a)lists.esug.org> > Subject: [Esug-list] URGENT - Fully funded Research Internship for Smalltalk programmer > Date: 24 January 2021 at 16:06:42 CET > To: esug-list(a)lists.esug.org > Reply-To: Simon Holland <simonxholland(a)icloud.com> > > URGENT â Fully funded five-month research internship available immediately in the School of Computing and Communications at The Open University for programmer. > > A fully funded place for a five-month Research Intern is immediately available at the School of Computing at the Open University. Prospective research interns could be excellent final year undergraduates, Masters students, or PhD students, or could have recently completed any of these awards. The post is available immediately, but in any case, you must be available to start in February 2021. Due to covid restrictions, the intern will be based remotely, with co-ordination online. > > The project involves the iterative design, construction and exploration of a highly expressive Direct Combination system (although no previous knowledge of Direct Combination is required). Direct Combination is a family of user interaction techniques, and a user interaction framework. Recent developments in Stateful Traits (Tesone et al., 2020) have provided tools for creating new highly expressive Direct Combination systems. > > The Project will involve designing, implementing and evaluating a new direct combination engine, and creating support tools as needed. You will be strongly encouraged to contribute as co-author to one or more refereed research publications. This research internship is available to start immediately and will run for five months. You will be able to work remotely for this whole period. > > Skills > Good Smalltalk programming skills are essential, ideally in Pharo. Good written and oral English communication skills are essential. Willingness to consider the end-userâs point of view is important. Various background skills are not essential, but could be helpful, such as: knowledge of, or interest in, software composition research and metaprogramming; good TDD habits; acquaintance with stateful traits; acquaintance with the Data-Context-Interaction paradigm; experience and skills with the Pharo toolset, such as Roassal, the Glamorous Toolkit, and Iceberg. > > Applications should include a CV with contact details and covering note that summarizes: > â¢ evidence of appropriate knowledge, skills and experience, > â¢ why you want to undertake this particular internship and why you would be a good candidate, > â¢ telephone, email and postal contact details for two referees, at least one of whom must be able to comment on subject discipline specifics. > > For more information, or for informal enquiries, which are encouraged, contact s.holland or o.howson (insert <at> here) open.ac.uk <http://open.ac.uk/>. Applications should also be sent to this address, and also copied to STEM-CC-Secretaries(a)open.ac.uk <mailto:STEM-CC-Secretaries@open.ac.uk>. > > âââââââââââââââââââââââââââââââââââââââ > > Further particulars > Design, Implementation, and Evaluation of a highly expressive Direct Combination Prototype > > Candidates are not required to know anything about Direct Combination (DC). However, some optional background is provided for candidates who might wish to know about the projectâs aim and scope. > > Direct Combination is variously a principle, a family of user interaction techniques, and a user interaction framework (Holland and Oppenheim, 1999; Holland et al., 2002a). Together, these can give users greatly enhanced flexibility interacting with digital systems and can reduce search when dealing with complex or unfamiliar interfaces (Holland et al., 2005). > > Direct Combination also has potential to simplify multi-device interaction (Holland et al., 2002), enhance bimanual interaction (Webb, 2017), facilitate interactions spanning virtual and physical boundaries; encourage serendipitous interaction (Holland et al., 2002b), and to enable the incremental development of novel interactions by end-user programming (Holland, 2003). While the potential of Direct Combination has been widely noted (e.g. Beaudouin-Lafon and Mackay, 2000, Rekimoto, 2004, Bartoleo et al, 2006 , Webb, 2017, Agarwal et al, 2019) existing implementations have been constrained by the limitations of available mechanisms for the modelling of separation of concerns in multi-dimensional domain models. > > However, new mechanisms that facilitate separation of concerns, in particular the revised version of Stateful Traits (Tesone et al., 2020) have created new opportunities for building highly expressive Direct Combination engines. Reenaskaugâs Data-Context-Interaction Paradigm (Reenskaug, 2006; James Coplien and Trygve Reenskaug, 2012) has also contributed relevant insights. > > As well as prototyping the new DC engine, the project will prototype support tools. To this end, the project will also involve analysing and creating informal domain models for one or two end-user domains, anticipated to be an AR/VR game in Unity (linked via a simple OSC bridge) and possibly an interface to allow end users and music scholars to query, analyse and visualise large quantities of linked music data on the web (via SPARQL). > > The choice of Smalltalk as preferred development environment reflects the fact that three previous implementations of Direct Combination at the Open University, and the reference implementations of both Stateful Traits and DCI, were all developed in Smalltalk (variously in Squeak, VisualWorks and Pharo). At the same time, the pervasively live-object nature of Smalltalk and its sophisticated IDE, along with the powerful metaprogramming facilities, offer substantial advantages in facilitating rapid prototyping and exploration. > > References > > Agarwal, Mallika, Arjun Srinivasan, and John Stasko. (2019) "VisWall: Visual Data Exploration Using Direct Combination on Large Touch Displays." 2019 IEEE Visualization Conference (VIS). IEEE, 2019 > > Bartolomeo, G., BlefariMelazzi, N., Cortese, G., Friday, A., Prezerakos, G., Walker, R. and Salsano, S., 2006, February. Sms: Simplifying mobile services-for users and service providers. In Advanced Int'l Conference on Telecommunications and Int'l Conference on Internet and Web Applications and Services (AICT-ICIW'06) (pp. 209-209). IEEE. > > Beaudouin-Lafon, M. and Mackay, W.E., 2000, May. Reification, polymorphism and reuse: three principles for designing visual interfaces. In Proceedings of the working conference on Advanced visual interfaces (pp. 102-109). > > James Coplien and Trygve Reenskaug (2012) The data, context and interaction paradigm. In SPLASH '12: Proceedings of the 3rd annual conference on Systems, programming, and applications: software for humanity. > > Gedenryd, H. (2002). Beyond Inheritance, Aspects and Roles: a Unified Scheme for Object and Program Composition. TR2002/09, Department of Computing, The Open University, Milton Keynes, MK76AA, UK. > > Holland, S. and Oppenheim, D. (1999) Direct Combination. Proceedings of CHI 1999 pp. 262-269. > > Holland, S., Morse, D.R., Gedenryd, H. (2002a) Direct Combination: a New User Interaction Principle for Mobile and Ubiquitous HCI. In Paterno, F., (Ed.) (2002) Human Computer Interaction with Mobile Devices. Mobile HCI 2002. > > Holland, Simon; Gedenryd, Henrik and Morse, David (2002b). Applying Direct Combination to afford spontaneity in Pervasive Computing. In: Workshop on Supporting Spontaneous Interaction in Ubiquitous Computing Settings, 29 Sep - 1 Oct 2002, Gothenburg, Sweden. > > Reenskaug, T. (2006) DCI Documentation http://heim.ifi.uio.no/~trygver/themes/babyide/baby-documents.html <http://heim.ifi.uio.no/~trygver/themes/babyide/baby-documents.html> (Accessed 19 Dec 2020) > > Holland, Simon (2005). A first empirical study of direct combination in a ubiquitous environment. In: Fincher, Sally; Markpoulos, Panos; Moore, David and Ruddle, Roy eds. People and computers XVIII - Design for life: proceedings of HCI 2004. London, UK: Springer, pp. 229â247. > > Holland, Simon (2003). Ambient Combination: Applying Direct Combination to Afford Spontaneity in Pervasive Computing . http://mcl.open.ac.uk/DC/uploads/Ambient%20Combination%20Long.pdf <http://mcl.open.ac.uk/DC/uploads/Ambient%20Combination%20Long.pdf> (accessed 10 Jan 2021) > > Rekimoto, J. (2004). SyncTap: synchronous user operation for spontaneous network connection. Personal and Ubiquitous Computing, 8(2), 126-134. > > Pablo Tesone, StÃ©phane Ducasse, Guillermo Polito, Luc Fabresse, Noury Bouraqadi (2020) A new modular implementation for stateful traits, Science of Computer Programming, Volume 195, 102470, ISSN 0167-6423, https://doi.org/10.1016/j.scico.2020.102470 <https://doi.org/10.1016/j.scico.2020.102470>. > > Webb, A.M., 2017. Phrasing Bimanual Interaction for Visual Design (Doctoral dissertation). > > > > > > > > > > _______________________________________________ > Esug-list mailing list > Esug-list(a)lists.esug.org > http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Jan. 25, 2021

Happy New Year and Pharo 90 good news.

by StÃ©phane Ducasse

Dear happy Pharoers, First we wish you a good 2021 year. We really hope that we will get out of this situation. On the Pharo side we have excellent news. Pharo 90 is continuing to follow its roadmap and it will be another version a massive amount of improvements. We will mention them in the Pharo 90 announce but we can cite a few: Spec2, new tools, new debugger framework, better parser, general speedup, new optimisations, full block and clean block closures, support for large images, new fluid class syntax, ... The key and important advance is that the VM roadmap is delivering. We have been working on the implementation of a MIT-licensed ARMv8 Just-In-Time compiler for Pharo VM. We are very happy with the advance on this subject, as we have not only implemented a new backend but we added more than 2500 tests to the JIT, the primitives, code generation, plugins and the VM in general. In the process we fixed many problems. We are currently fixing ephemerons since they never really worked in Pharo. We are stressing the infrastructure with more than 50000 ephemerons. Also, we are improving and cleaning up the primitive invocation scheme to fix heap corruption issues, and fixing many open issues in the VM. Finally, we are working a lot to have a reproducible build in all the platforms and easing the path to VM development, we are still far from our objective but the improvements are starting to show. We are happy that following the roadmap that was decided during General assembly of PharoDays is successful. We have been investing in the Pharo VM and that our efforts are greatly paying off. This is the current status around the VM - We implemented a full backend for the JIT compiler targeting ARMv8 (AARCH64) - We launched the beta version for Windows, Linux and raspberry of the new 64 JIT ARM. - We are waiting to receive a new mac machine to be able to test our new JIT on it. - All the image side was adapted to run on it, tested on Ubuntu ARM 64 bits and Windows ARM. - We have support for all third party libraries in these platforms: Iceberg (Libgit) / Athens (Cairo) / SDL / GTK. - We implemented a LibFFI-based FFI backend as the default one for Pharo 9 in aarch64 (It is also present in other platforms, keeping the existing one as fallback, e.g. used when the VM is not the latest). - We revisited the complete compilation chain on Windows to use CMake and avoid Cigwin dependency. - We are starting to use OBS to build for multiple Unix and Linux distributions (Debian-like is Done, More distributios to come). - Many bugs on the VM have been fixed, for all these bugs tests have been written to detect regressions and to to document the solution. - We are always performing clean-ups of the VM base code: removing dead-code and experiments from the main branch. All removed code is kept in the history and it is accessible to revisit or to improve to the level that is required to be integrated (e.g., Newspeak Support, Lowcode) - We improved the implementation of Windows Network primitives, and we have done a clean-up of the event handling code allowing an IDLE VM. - We are starting to improve the JIT compiler. We are applying some approaches developed in modern compiler such as bloc representation. - We are working in statistics collection to characterize the behavior of different components of the VM. - We are planning to generate a set of benchmarks that correctly represents the workload of applications using the VM (e.g, Web Server, Interactive Applications, FFI intensive applications). It means that in the near future we expect to be able to improve even more our VM applying a scientific approach: measure, assess, improve. - We expect that for Pharo 10, we will continue to clean the VM code and be more agile. - We will able to look again at Sista. All these steps show that we are in much better situation. We drastically reduce the truck factor around the VM. It particularly means that the consortium now does not depend of the good will and knowledge of other people. We want to thank every member of the consortium. Now we have a particular thank to Lifeware that renewed their contract and Schmidt Buro for their original contract. A last word â do not hesitate to contact us, we are here to help you growing your business. S. Ducasse on the behalf of the Pharo consortium -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr <http://stephane.ducasse.free.fr/> / http://www.pharo.org <http://www.pharo.org/> 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Jan. 25, 2021

[ANN] Next Pharo Sprint: Jan 29

by Marcus Denker

We will organize a Pharo sprint / Moose dojo Jan 29 (this Friday) Goals of this sprint: - Fix issues from tracker https://github.com/pharo-project/pharo/issues This is a Remote Sprint, it happens on Discord. http://pharo.org/contribute-events We have added a Board to coordinate the work: https://github.com/orgs/pharo-project/projects/9 A list of all Pharo Event of the year an be found here: https://association.pharo.org/events

Jan. 25, 2021

Progress Report -> Refactoring Project - ( January 18 - 21 )

by EVELYN CUSI LOPEZ

Hi all Last week I did these tasks: - Fix renaming protocol issue( https://github.com/pharo-project/pharo/pull/8394) - Fix comparing symbols and strings ( https://github.com/pharo-project/pharo/pull/8381) - Fix pushUp and pushDown variables can be call from definition context ( https://github.com/pharo-project/pharo/pull/8395) - Fix details to permute arguments when add an argument ( https://github.com/pharo-project/pharo/pull/8382) - Fix dependences of driver. - Start to delete SycMessageDescription and SycMessageOriginHack classes, but exists some cases when this changes not works. Tasks for this week: - Fix issues of PR to delete or improve SycMessageDescription class - Finish pushUp setUp method - Improve how to use options of refactoring - Fix current ExtractMethodTransformation, because it does not search if the extracted method is already implemented in a method of its hierarchy. - Fix Rewritting tool fails to place a cascade inside a cascade issue. Cheers, Evelyn

Jan. 25, 2021

P9 browser auto complete issue Windows 10

by Sanjay Minni

Hi Using Pharo 9 in Windows 10 (just installed) In System Browser often as I type i get as the screen below cmd->open details instaed of the usual drop down of type ahead / auto complete <http://forum.world.st/file/t368721/PharoBrowserIssue.jpg> what is the issue pls ----- cheers, Sanjay -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html

Jan. 23, 2021

This week (03/2021) on the Issue Tracker

by Marcus Denker

Debugger ======== - 5427 debugger into on dead process hangs image #8373 https://github.com/pharo-project/pharo/pull/8373 - 8146-Stepping-into-Blocks-entirely-an-image #8400 https://github.com/pharo-project/pharo/pull/8400 Refactoring =========== - RB - Add message to kwon how many occurrences were replaced #8380 https://github.com/pharo-project/pharo/pull/8380 - RB - Fix strings and symbols comparing when extract method #8381 https://github.com/pharo-project/pharo/pull/8381 - RB - Add options to call refactoring pushUp and pushDown in class definition context (source code) #8395 https://github.com/pharo-project/pharo/pull/8395 - RB - Permute parameters when add an argument #8382 https://github.com/pharo-project/pharo/pull/8382 Keyboard and Event Cleanup ========================== - Do not send Ctrl events as text events on windows or linux #8384 https://github.com/pharo-project/pharo/pull/8384 - Fix wrong key mapping in unix for old VM events #8389 https://github.com/pharo-project/pharo/pull/8389 - Ignore control codes between 127 and 159 in old events #8391 https://github.com/pharo-project/pharo/pull/8391 - Fix capslock on linux on old VMs #8390 https://github.com/pharo-project/pharo/pull/8390 - Mouse over event is sent multiple times #8401 https://github.com/pharo-project/pharo/pull/8401 Fixes ===== - improve-win32-platform-specific-implementations #8339 https://github.com/pharo-project/pharo/pull/8339 - hasBindingThatBeginsWith-Layouts #8365 https://github.com/pharo-project/pharo/pull/8365 - Fix renaming protocol: current value not selected #8394 https://github.com/pharo-project/pharo/pull/8394 - Fix a regression from earlier pharo that used to perserve order in #8402 https://github.com/pharo-project/pharo/pull/8402 - fixes #8352: Inspect Text https://github.com/pharo-project/pharo/pull/8357 clean the class variables in RubTextSelectionColor #8364 https://github.com/pharo-project/pharo/pull/8364

Jan. 22, 2021