May 2020 - Pharo-users - lists.pharo.org

ANN - Techtalk - Pharo Status May 2020

by tesonep＠gmail.com

Techtalk: Pharo Status May 2020 Abstract: Pharo is moving fast, and sometimes it looks it is doing it in a chaotic way. However, we have a plan and a lot of things that we have accomplished in the past months. The idea of this talk is to present what has been done, where we are, and what are the things that we are working on. The idea of this talk is to be an open talk, where we can share the state but also listen to different ideas about what is important for the community. For so, I am attaching a presentation with the detail of the status, so we can start from it the conversation. When: Wednesday 6th May, 17h00 Paris Time / 15h00 UTC Where: #Techtalk channel in Pharo Discord Server. -- Pablo Tesone. tesonep(a)gmail.com

May 4, 2020

Re: [Pharo-users] New type of web application using HTML, CSS and Smalltalk

by Konrad Hinsen

Hi Erik, > I have published my first demo of a new type of webapplication based on a > tiny Smalltalk image running in the browser, acting as the JS-engine. Create > a dynamic application using Smalltalk only, with the direct manipulation > you're familiar with from Smalltalk. And ...(in the near future)... with the > same debugging capabilities. Still work in progress, but hopefully providing > an idea of what's in store. That demo looks very interesting! If I understand your architecture correctly, you have a minimal image run in the browser, presumably using a virtual machine written in JavaScript. The in-browser Smalltalk talks to a server written in Pharo, which is the development environment for Web applications. That all looks good. What isn't clear to me is the autonomy of the in-browser system. Do you need the Pharo server only for development, or also for deployment of the final Web application? Konrad.

May 4, 2020

Re: [Pharo-users] MetaLinks for Dynamic Contracts

by Sven Van Caekenberghe

He Evan, Can't answer your questions, but the contracts concepts sounds interesting ! Sven > On 3 May 2020, at 23:18, Evan Donahue <emdonahu(a)gmail.com> wrote: > > Hello, > > I am returning to some work in Pharo after about ~2.5 years and reminding myself of what I was working on before I got sidetracked. It appears > > I had mostly finished for release a dynamic contracts library for run time type checking based on Racket's contract library.[1] However, it relied on some hackery to interact well with the TestCoverage class, since both the contract and the TestCoverage wanted to replace the method during the run of a test. However, since it seems in Pharo 8 the TestCoverage class is no longer present, this seems like a good time to re-evaluate the project before I go in to see what needs to be patched up. I therefore have three questions: > > 1) Are there now any existing libraries for dynamic contracts that I should use instead of patching my old library? > > 2) Is MetaLinks the preferred way to intercept messages, and if so can someone point me to the repo (I can't seem to find it on Github)? > > 3) If 2, does MetaLinks play well with whatever is the current TestCoverage alternative that I assume still does some form of message interception, e.g. will the test coverage function still work properly on a MetaLink'ed message, or will that require further hackery (I discovered MetaLinks after the first version, so I used the more basic message replacement apis)? > > Thank you, > Evan > > > [1] https://docs.racket-lang.org/reference/contracts.html

May 4, 2020

Re: [Pharo-users] [ANN] Pharo Compendium

by Torsten Bergmann

Yes - I was developing on P9 and never tried it in Pharo 8. But I checked now - seems to work without any problem there as well. Thx T. Gesendet:Â Sonntag, 03. Mai 2020 um 22:36 Uhr Von:Â "StÃ©phane Ducasse" <stephane.ducasse(a)inria.fr> An:Â "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org> Betreff:Â Re: [Pharo-users] [ANN] Pharo Compendium It can probably work in P8 because parts of Spec20 are working in P8 but not all the features and widgets like tables and others.Â But torsten will tell us.Â Â On 3 May 2020, at 17:34, Esteban Maringolo <emaringolo@gmail.com[mailto:emaringolo@gmail.com]> wrote:Â Excellent Torsten! I guess it will not work in Pharo 8 because of the Spec 2 requirement. Right? Regards! Esteban A. Maringolo

May 3, 2020

MetaLinks for Dynamic Contracts

by Evan Donahue

Hello, I am returning to some work in Pharo after about ~2.5 years and reminding myself of what I was working on before I got sidetracked. It appears I had mostly finished for release a dynamic contracts library for run time type checking based on Racket's contract library.[1] However, it relied on some hackery to interact well with the TestCoverage class, since both the contract and the TestCoverage wanted to replace the method during the run of a test. However, since it seems in Pharo 8 the TestCoverage class is no longer present, this seems like a good time to re-evaluate the project before I go in to see what needs to be patched up. I therefore have three questions: 1) Are there now any existing libraries for dynamic contracts that I should use instead of patching my old library? 2) Is MetaLinks the preferred way to intercept messages, and if so can someone point me to the repo (I can't seem to find it on Github)? 3) If 2, does MetaLinks play well with whatever is the current TestCoverage alternative that I assume still does some form of message interception, e.g. will the test coverage function still work properly on a MetaLink'ed message, or will that require further hackery (I discovered MetaLinks after the first version, so I used the more basic message replacement apis)? Thank you, Evan [1] https://docs.racket-lang.org/reference/contracts.html

May 3, 2020

Re: [Pharo-users] New type of web application using HTML, CSS and Smalltalk

by CÃ©drick BÃ©ler

Really great Erik. I just want to try ! ;-) This is great to see such practical and cool uses of small images. Itâs a long dream that seems happening. And of course, thanks to all people who made it possible, especially those who work on the bootstrap process and others in general (the list is too long). Exciting time in the Smalltalk world. Feels like Renaissance to me ;-) Cheers, Cedrick

May 3, 2020

Re: [Pharo-users] Thinking aloud about project at hand

by StÃ©phane Ducasse

> On 3 May 2020, at 11:03, Lorenzo <lorenzo(a)edor.it> wrote: > > Hi Stephane, > > may be you remeber me as I helped you for a ESUG in Brescia. Yes I remember. > At present I am working on a revision of fuzzy expert system generator that, > IMHO, could be used for the project. Please publish it. S. > If you believe that it could be interesting, please, let me know. > > Ciao > > Lorenzo > > -----Messaggio originale----- > Da: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] Per conto di > StÃ©phane Ducasse > Inviato: sabato 2 maggio 2020 22:01 > A: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > Oggetto: Re: [Pharo-users] Thinking aloud about project at hand > > >> >>> I'm thinking about implementing a software solution in Pharo (as one >>> of the >> candidate environments), it's >>> a project that I'm dealing with professionally. The goal is to >>> develop a financial planning/simulation application on the country >>> level, which is at present developed as a set of interrelated Excel >>> spreadsheets. >>> The requirement is that the solution should be more "manageable", >>> resilient and straightforward than Excel permits, that it should >>> present a workflow to the user - i.e. , that the tasks the user >>> should do are suggested through the GUI. >> >> Thanks again for all the ideas regarding my project. So far I prepared >> the domain model and all the calculations. The model might be changed >> in the future, but that's basically it. Now I'm going to focus on the >> user's workflow and GUI. >> >> I have to say that I'm positively surprised by Pharo. Besides Pharo, I >> explored the feasibility of using other environments for the same >> project, namely VBA, .NET, Python. What took me in VBA and C#.NET >> roughly two weeks - and these are my 'native' programming environments >> - I finished in five days in Pharo. If GUI and finalization will go > smoothly, this will be a success. >> I'm playing with Pharo for some time, but until now I haven't done any >> serious work with it. Nice! >> > > Thanks Tomaz. > This is a really interesting story. > Let us know and we will do our best to help you. > Spec20 has still some rough edges. But one step at a time. > I think that we will get to a point where we can start to breath a bit > around Spec2.0. > > S. > > > > -- > Questa e-mail Ã¨ stata controllata per individuare virus con Avast antivirus. > https://www.avast.com/antivirus > > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Julie Jonas 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

May 3, 2020

Re: [Pharo-users] [ANN] Pharo Compendium

by StÃ©phane Ducasse

It can probably work in P8 because parts of Spec20 are working in P8 but not all the features and widgets like tables and others. But torsten will tell us. > On 3 May 2020, at 17:34, Esteban Maringolo <emaringolo(a)gmail.com> wrote: > > Excellent Torsten! > > I guess it will not work in Pharo 8 because of the Spec 2 requirement. Right? > > Regards! > > Esteban A. Maringolo > > On Sat, May 2, 2020 at 5:35 PM Torsten Bergmann <astares(a)gmx.de> wrote: >> >> Hi, >> >> time flows and Pharo-Project is improving on all ends since its inception in 2008. As you know over time for the code project hosting we used >> SqueakSource, SS3 repos and other and later switched to SmalltalkHub available on http://smalltalkhub.com. >> Starting with Iceberg in Pharo 6 many community projects are now hosted elsewhere - most of them moved to GitHub. Pharo's git support allows >> also for GitLab, BitBucket and other git hosting services. >> >> I still think easy and quick accessibility to external (re)sources directly from the image is key - especially for new users who often get lost >> among all the various things that are available. Back in 2013 I therefore provided a small tool called ConfigBrowser as a replacement for >> MetacelloConfigurationBrowser to easily load Metacello configs directly into Pharo. >> >> Later we improved quick loading with a primary tool called "Catalog" written by Esteban. Catalog is indexing every 24 hours all configs within >> specific meta-repositories on SmalltalkHub (per Pharo version) like >> >> http://www.smalltalkhub.com/#!/~Pharo/MetaRepoForPharo80 >> >> to automatically build >> >> http://catalog.pharo.org/ >> >> and also a JSON source >> >> http://catalog.pharo.org/catalog/json >> >> The last one feeds the catalog browser and catalog spotter search within the Pharo image. >> >> So Catalog helped us and especially new Pharo users to find what is available as external project or package. Unfortunately some package maintainers >> are too lazy and do not maintain their configs over old and new Pharo versions. Also SmalltalkHub.com is now seen as legacy and will only be available >> in a read only mode or as a browseable archive soon. >> >> So we have to think about others steps beyond Catalog and (triggered by a recent discussion on Discord) I started now a simple tool that helped me >> finding all GitHub projects marked with "pharo" as GitHub topic. I additionally also added previous catalog loading. More sources could be added >> as well as some kind of custom stores/plugins. Maybe this tool could be the base for a future replacement of the catalog tool. >> >> Long story short - let me introduce "Pharo Compendium": >> >> Compendium is a new UI tool to list, browse and load Pharo artefacts from the web like: >> >> - GitHub Projects >> - Catalog Projects >> >> and other >> >> By default there are two plugin packages available for GitHub and Catalog - but you can implement own ones easily to connect to other sources >> on the web. Compendium is available on: >> >> https://github.com/astares/Pharo-Compendium >> >> It is implemented using the new Spec2 UI framework - so you need a recent Pharo 9 image to give it a try. Just run: >> >> Metacello new >> repository: 'github://astares/Pharo-Compendium/src'; >> baseline: 'Compendium'; >> load >> >> to load the tool. Then go to "Tools" -> "Compendium Browser". Attached is a screenshot demoing the primary functionality. >> >> If you want your GitHub project to be listed in the tool you simply need to add the topic "pharo" to the GitHub repository on the GitHub webpage. >> >> Feel free to comment or help improving the tool by sending PR's. >> >> Thx >> T. (aka astares) >> >> > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Julie Jonas 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

May 3, 2020

Re: [Pharo-users] New type of web application using HTML, CSS and Smalltalk

by StÃ©phane Ducasse

Ok I did not hear that you were talking :) > On 3 May 2020, at 22:30, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > > Hi erik > > this is strange since during a couple of minutes we do not see much. > > S. > >> On 3 May 2020, at 20:11, Erik Stel <erik.stel(a)gmail.com <mailto:erik.stel@gmail.com>> wrote: >> >> I have published my first demo of a new type of webapplication based on a >> tiny Smalltalk image running in the browser, acting as the JS-engine. Create >> a dynamic application using Smalltalk only, with the direct manipulation >> you're familiar with from Smalltalk. And ...(in the near future)... with the >> same debugging capabilities. Still work in progress, but hopefully providing >> an idea of what's in store. >> >> Feel free to ask questions. >> >> https://www.youtube.com/watch?v=qvY7R6te7go <https://www.youtube.com/watch?v=qvY7R6te7go> >> >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >> > > -------------------------------------------- > 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: Julie Jonas > 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: Julie Jonas 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

May 3, 2020

Re: [Pharo-users] New type of web application using HTML, CSS and Smalltalk

by StÃ©phane Ducasse

Hi erik this is strange since during a couple of minutes we do not see much. S. > On 3 May 2020, at 20:11, Erik Stel <erik.stel(a)gmail.com> wrote: > > I have published my first demo of a new type of webapplication based on a > tiny Smalltalk image running in the browser, acting as the JS-engine. Create > a dynamic application using Smalltalk only, with the direct manipulation > you're familiar with from Smalltalk. And ...(in the near future)... with the > same debugging capabilities. Still work in progress, but hopefully providing > an idea of what's in store. > > Feel free to ask questions. > > https://www.youtube.com/watch?v=qvY7R6te7go > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Julie Jonas 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

May 3, 2020