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

Re: [Pharo-users] Agile Artificial Intelligence in Pharo book
by Gabriel Cotelli July 13, 2020

July 13, 2020

Smalltalk Hub is a code hosting platform and it's having problems these days. Looks like the book code has some dependency hosted there, so I think that when the problem gets solved it should work again. On Sun, Jul 12, 2020, 20:22 G B via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > I bought "Agile Artificial Intelligence in Pharo" and am using Pharo 8.0 > 64-bit. In the book it says you can download the source using: > > Metacello new > baseline: 'AgileArtificialIntelligence'; > repository: 'github://Apress/agile-ai-in-pharo/src'; > load. > > Then it times out with: > "MCSmalltalkhubRepository(MCRepository)>>error:" > self > > Could not load Athens-SVG-PeterUhnak.17.mcz: > ZnHttpUnsuccessful: 503 Service Temporarily > Unavailable > > I am fairly new to Pharo and run into problems with documentation being > old, for example, Pharo By Example. I realize it is difficult to keep books > updated with the many changes in an active project. I'm fine with that. > > However, how can a just published book have the source listed in its > pages, but then not have it available? > > >

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Re: [Pharo-users] Agile Artificial Intelligence in Pharo book
by Richard Sargent July 13, 2020

July 13, 2020

It is possible that one of the prerequisites comes from smalltalkhub.com, as that site has been down for the last couple of days. On Sun, Jul 12, 2020, 15:53 G B via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > I bought "Agile Artificial Intelligence in Pharo" and am using Pharo 8.0 > 64-bit. In the book it says you can download the source using: > > Metacello new > baseline: 'AgileArtificialIntelligence'; > repository: 'github://Apress/agile-ai-in-pharo/src'; > load. > > Then it times out with: > "MCSmalltalkhubRepository(MCRepository)>>error:" > self > > Could not load Athens-SVG-PeterUhnak.17.mcz: > ZnHttpUnsuccessful: 503 Service Temporarily > Unavailable > > I am fairly new to Pharo and run into problems with documentation being > old, for example, Pharo By Example. I realize it is difficult to keep books > updated with the many changes in an active project. I'm fine with that. > > However, how can a just published book have the source listed in its > pages, but then not have it available? > > >

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Agile Artificial Intelligence in Pharo book
by G B July 12, 2020

July 12, 2020

I bought "Agile Artificial Intelligence in Pharo" and am using Pharo 8.0 64-bit.Â In the book it says you can download the source using: Metacello newÂ baseline: 'AgileArtificialIntelligence';Â repository: 'github://Apress/agile-ai-in-pharo/src';Â load. Then it times out with:"MCSmalltalkhubRepository(MCRepository)>>error:" self Could not load Athens-SVG-PeterUhnak.17.mcz:ZnHttpUnsuccessful: 503 Service Temporarily Unavailable I am fairly new to Pharo and run into problems with documentation being old, for example, Pharo By Example. I realize it is difficult to keep books updated with the many changes in an active project. I'm fine with that. However, how can a just published book have the source listed in its pages, but then not have it available?

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Updated Alpine Linux Pharo VM Docker image
by Pierce Ng July 12, 2020

July 12, 2020

Hi all, I've updated the Docker image for pharo.cog.spur.minheadless VM built on Alpine Linux. This version is built on Alpine Linux 3.12. Some links: - https://hub.docker.com/r/pierceng/pharovm-alpine - https://github.com/pharo-contributions/Docker-Alpine/tree/master/vm.build - https://github.com/PierceNg/opensmalltalk-vm/tree/pierce_alpine_839a5ca This version removes the following plugins. I'm still thinking about some of the others, especially the GUI-related ones. The idea is of course to have the smallest possible set of plugins. Comments welcome. - Security - Drop - Croquet - DSAPrims - JoystickTablet - MIDI - Serial - StarSqueak - InternetConfig The output Docker image contains the Pharo VM only and is not runnable by itself. It is intended to be used as a base to build your own Docker image containing your application-specific Pharo image. I'll be building a similar Docker image for Pharo's fork of the VM. Pierce

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glamorous toolkit & pharo
by Tudor Girba July 12, 2020

July 12, 2020

Hi, As Glamorous Toolkit gets closer to being released, we get quite a number of questions on various channels about its relationship with Pharo. Glamorous Toolkit is built with Pharo. It is unlikely that we would have been able to produce it in any other language within the constraints we faced. At the same time, Glamorous Toolkit is a separate project produced by feenk with a distinct goal and its own realization. Here is a short overview of what we mean by it: https://blog.feenk.com/glamorous-toolkit-and-pharo-5aufgcequ38az2s0dj0t1nu0… Please do let us know if you have concerns or questions. Cheers, Doru -- feenk.com [fiËÅk] verb feel and think concomitantly.

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Webminar about VA Smalltalk new OS Process Framework
by Mariano Martinez Peck July 10, 2020

July 10, 2020

Greetings all, Some time ago, I had the pleasure and privilege of being sponsored by the Pharo Consortium to implement OSSubprocess. Because of that work, I quickly realized that a new OS process framework created by Instantiations was quite advanced and unlike anything I had seen before. If you are able, I would highly recommend that you attend the technology preview of this framework coming to VAST 2021: Seth Berman will be presenting, registration here: https://attendee.gotowebinar.com/register/7491754880594201356 We hope the community can attend and we look forward to your feedback and questions during the event's Q&A session. Best regards, -- Mariano Martinez Peck Email: marianopeck(a)gmail.com Twitter: @MartinezPeck LinkedIn: www.linkedin.com/in/mariano-martinez-peck <https://www.linkedin.com/in/mariano-mart%C3%ADnez-peck/> Blog: https://marianopeck.wordpress.com/

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Zinc question
by Sean P. DeNigris July 10, 2020

July 10, 2020

The following fails intermittently with "ZnIncomplete: Incomplete input for character decoding": ZnClient new url: 'https://cpanel.webserver:1234/' asUrl; path: '/login/'; queryAt: 'login_only' put: '1'; formAt: 'user' put: 'username'; formAt: 'pass' put: 'pa$$w0rd'; post. AFAICT, the expected output has already been completely received and correctly interpreted, but then for some reason, the following happens: 1. `stream atEnd` does not return true 2. `#nextCodePointFromStream:` does `stream next` and gets `nil`, which leads to the error being signaled. Any ideas, explanations, (or especially) workarounds? ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Output the method name as a string at runtime
by ASAM July 9, 2020

July 9, 2020

Hello, I would like to output the method name as a string in case of an error. what I've already done is this: (with thisContext selector asString) pduDestruct | result | result := call ffiPDUDestruct. result = T_PDU_ERROR PDU_STATUS_NOERROR ifFalse: [ Error signal:'Method: ' , thisContext selector asString , ' with result: ', result item asString ] but now I use it more often. And wanted to rebuild it like that. initialize errorBlock := [ :tPduError | Error signal:'Method: ' , thisContext selector asString , ' with result: ', tPduError item asString ]. pduDestruct | result | result := call ffiPDUDestruct. result = T_PDU_ERROR PDU_STATUS_NOERROR ifFalse: [ errorBlock value: result ] but that doesn't work because "this Context selector toString" now returns 'initialize'. Can someone give me a hint how to solve this? Is "thisContext selector asString" the only way to get the name of the method at runtime? Thanks in advance. -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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TaksIt tasks sequence: writing a file and reading it to add its contents to a domain object
by Offray Vladimir Luna CÃ¡rdenas July 9, 2020

July 9, 2020

Hi all, I think that TaskIt is addressing a reader I'm not. Maybe I lack the previous background to fully make sense of it. I have been asking on Discord and getting some help to understand the rationale behind TaskIt and why is not doing what I want, but still I can not make it to do it. I want to do something like this: |task1 := [ code to write tempFile on hard disk using external Unix tools] future. taks2 := [ code to read data on the tempFile and add it to myObject dictionary] future. taks1 andThen: task2. myObject dictionary "Should show data coming from combining task1 and task2 y sequential order"| myObject is being changed in a future result that I can not access outside the block where I modify myObject. I would like to order task in a sequential order, doing the next only after the previous have ended and have access to the result of the last computation outside such sequence. Is this possible with futures? Thanks, Offray ||

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I think I've discovered an error in the later v9 builds
by Russ Whaley July 8, 2020

July 8, 2020

(Overall, this error does not occur in v8 - even the latest snapshot.1140. It did not exist in the v9 image from February - I don't know how to tell what build it is. But the latest Official Distribution for v9 and the latest snapshot.840 - the following error occurs:). This error appears to be around the transmitTo: within SpPresenterWithModel>>connectPresenters. I haven't been able to (yet) trace why, but the debug message is in the 2nd 'transform:' below -- erroring saying that 'each' is nil - and doesn't understand the #method2 message. Here is the scenario: (aSpTablePresenter(1) transmitTo: aSpTablePresenter(2)) transform: [ :each | ((each #method asOrderedCollection ) sorted: #title ascending ) ]. "transmit aSpTablePresenter(2) to aSpTablePresenter(3)" (aSpTablePresenter(2) transmitTo: aSpTablePresenter(3)) transform: [ :each | ((*each #method2* asOrderedCollection) sorted: #number ascending )]. The UI populates just fine - when I click a row in the first aSpTablePresenter(1) - it fills the 2nd aSpTablePresenter(2), but it looks like the code above attempts to do the 2nd transmitTo: to populate aSpTablePresenter(3) and is trying to do so without data from aSpTablePresenter(2) - there could be a number of reasons for this. Behavior-wise, I would prefer that SpTablePresenters default to a first row selected and populate (transmitTo:) to each of their SpTablePresenters in kind (defaulting to first row, then transmitTo: the next tablePresenter). Through the Inspector, all three SpTablePresenters have their lists populated - and the UI shows these lists - even after punching through error. Another observable - when I click on column headers to sort, the transmitTo:'s get called again and also error out - even the first transmitTo:... could be one simple change will correct all these anomalies. I will try and mock-up a simpler version to share. Please let me know if you have any questions or items I should specifically include. Thanks! Russ -- Russ Whaley whaley.russ(a)gmail.com

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