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

Re: [Pharo-users] Intermediate-Level Tutorials for Pharo

by StÃ©phane Ducasse

> On 29 Jul 2020, at 05:06, Russ Whaley <whaley.russ(a)gmail.com> wrote: > > Back on the 'Intermediate Tutorials' question... > > I would love to see intermediate tutorials on Spec2 and Seaside.... and perhaps how to best adapt an (Sp)Application to serve both 'presenters' with guidelines on what responsibility goes where on the presenter/component, application, and model(s). Agreed. Now for the seaside tutorials please ask seasiders because what is killing me is to have to deeply learning something before writing may be one person can write some blog posts. For Spec2 we will but Iâm waiting for esteban to write and I do a pass after. > What I found most useful in tutorials is specific examples. To me, generic examples can be too easily misunderstood - making them difficult to (re)apply. A specific example, even if silly, can really make a differenceâ¦ Yes! Did you see https://github.com/Ducasse/smalltodo-example/blob/master/SmallTODO-Tutorial… > i.e. I'm never going to create a GUI based on the Class/method hierarchy and I find it very difficult to apply those examples (although they are slick) to my application needs. > > I love looking at how other people approach problems, identify solutions (I can't wait to dig into the logic-puzzle code). This mailing list is great, but more - and more advanced - tutorials would be very much appreciated! > > Thanks! > Russ > > > On Mon, Jul 27, 2020 at 11:45 PM tbrunz <wild.ideas(a)gmail.com <mailto:wild.ideas@gmail.com>> wrote: > So I decided to write an application to solve the Zebra Puzzle, by solving > this type of problem in general. In Pharo, of course. > > I worked out a few basic algorithms for making deductions and inferences, > and coded them, along with tests, in Pharo 8. Now I've reached the point of > having a working "proof of concept" or prototype. It can't (yet) solve the > Zebra Puzzle without some "human assistance", but it does keep track of the > solution state as it progresses, it handles the bookkeeping, makes the basic > deductions/inferences, and produces reports. > > And I've used it to quickly solve the Zebra Puzzle. I coded the solution as > a separate class/method, with extra rules inserted that I was able to infer > by iterating to partial solutions, so that it solves the entire thing. It > will interesting to develop the remaining algorithms, and it would be nice > to eventually create a nice, interactive user interface for it as well. > > Since I want to fashion this into an intermediate-level tutorial, I need > feedback on what I have so far. I don't want my inexperience to lead to me > teaching the wrong techniques, etc. to other developers who are learning > Pharo. What I have can no doubt be improved, but I need to hear from the > master craftsman in this community what parts are compromised and how (and > why) it can be made a better example of "how to program in Pharo" properly. > > If anyone has the time and is willing to help, the code (complete with class > & method comments, test classes/methods, and the Zebra Puzzle example) is > here: > https://github.com/tbrunz/logic-puzzle <https://github.com/tbrunz/logic-puzzle> and I'm available to answer questions > about it, of course. > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> > > > > -- > Russ Whaley > whaley.russ(a)gmail.com <mailto:whaley.russ@gmail.com> -------------------------------------------- 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

Aug. 2, 2020

Re: [Pharo-users] Intermediate-Level Tutorials for Pharo

by StÃ©phane Ducasse

> On 28 Jul 2020, at 05:38, tbrunz <wild.ideas(a)gmail.com> wrote: > > tl;dr: I have some ideas about more advanced Pharo tutorials, and I have an > example that I would like to have reviewed/critiqued before I develop it any > further. > > I've been thinking lately that it would be nice to expand the number of > Pharo tutorials we have available. But rather than (or along with) creating > more "beginner" level tutorials, I'd like to see some good "intermediate" > level Pharo tutorials. Me too :) > I think that programmers who already know the Pharo > syntax and messaging semantics could benefit from more advanced tutorials > that demonstrate how to develop "real world" Pharo code for "real world" > processing needs. Yes yes I would love that. > > What I'm talking about is something that assumes you know the language, the > basics of the IDE (but not necessarily how to leverage its capabilities to > aid development), and the basics of the foundation classes (but not its > details). I'd like a tutorial for intermediate Pharo programmers who want > to become experts with Pharo. Something that can show you how to apply the > tools of the IDE and the features of the language and base classes to create > solutions that solve complex problems. do you have ideas? > What does the community think of this idea? I love it. I did Pharo by example so that I can get of rid of the beginner parts. After I did learning OOP and Pharo with style so that I do not have to talk about it again. So definitively. > > -Ted > > > > -- > 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: 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

Aug. 2, 2020

Re: [Pharo-users] Intermediate-Level Tutorials for Pharo

by tbrunz

Hi Russ, I added an "Examples" package tag, with several methods that lead through the Zebra Puzzle solution, step by step. It still doesn't do the entire solution by itself, but each example method displays the solution state up to that point, allowing you to examine the results and infer additional rules to add. The last example method combines the puzzle rules + the additional rules you infer, and displays the complete solution. I plan to make the code "smarter" over time, so that it can eventually solve the whole thing by itself. Let me know what you think... -Ted -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Aug. 2, 2020

SmalltalkHub is offline

by Esteban Maringolo

Hi people, SmalltalkHub has been down for a while. https://downforeveryoneorjustme.com/smalltalkhub.com I don't know if there was a planned downtime or something crashed. Thanks! Esteban A. Maringolo

Aug. 1, 2020

Re: [Pharo-users] Cmd+s in P8 not captured using Commander (works in P9) and SpTextPresenter

by HernÃ¡n Morales Durand

For the record, a workaround is to send #whenTextIsAcceptedDo: to the SpTextPresenter. Cheers, HernÃ¡n El jue., 30 jul. 2020 a las 0:10, HernÃ¡n Morales Durand (< hernan.morales(a)gmail.com>) escribiÃ³: > I found a difference in shortcut handling between Pharo 8 and Pharo 9 > which you can reproduce with the attached minimum working example. In the > example, the halt in the Command's #execute method in P9 is sent but not in > P8. > > SpComm2SaveTextMWE show. > > The problem seems to be Pharo 8 doesn't execute the KMKeymap callback > configured for Cmd+s in SpKMCategoryBuilder>>visitCommand: while Pharo 9 > does. > > In some way the only way to capture the Accept keypress is to modify the > #buildShortcutsOn: method in RubTextEditor, but I'd like to avoid such > approach. > > Is there any workaround to this? > > Cheers, > > HernÃ¡n > >

Aug. 1, 2020