October 2017 - Pharo-users - lists.pharo.org

Is possible to keep some code closed in Pharo?
by Ricardo Pacheco Oct. 14, 2017

Oct. 14, 2017

IMHO, one important aspect to deliver comercial solutions for customers in an environment like Pharo is to be able to protect certain code or algorithms developed by the company. It possible to have some clases compiled and closed to the eyes of customers? Or it is posible to have some kind of access control to edit clases? A bit of context for my question. In the company I work for in Mexico we have been using a similar live coding environment for 30 years with great results. The environment we used until a couple of years ago is named G2 by Gensym; lisp based internally, with is own natural language like syntax for developers, with a very powerful backward ans forwards chaining rule engine, an excellent toolkit to create visual components and a wonderful VNC like and lightwaight client(Telewindows) that makes visual interactions with a remote G2 very easy with a very small bandwidth use. Until a couple of years ago, we developed on it tailor made supply chain solutions and mathematical models; since then we moved to Java and .NET. We wish we could stay with live coding, but the draw back with that platform we used is that is really expensive for customers and the company has been changing hands to more lawyer oriented owners, because of its installed based license fees and IP portfolio. So, getting to know Pharo makes me very enthusiastic about the possibility to move back to live coding. Thanks for the response. Ricardo -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Bloc Example Errors & question
by Ricardo Pacheco Oct. 14, 2017

Oct. 14, 2017

I was reviewing the Bloc examples because I'm looking for a way to connect several blocks like this: <http://forum.world.st/file/t370703/muestra.png> . The idea is that if I move the block, the link with other blocks is kept. I could not find any similar example. Any hint would be appreciated. Also, while reviewing the examples in the latest Pharo 6, some crashed and a couple even let Pharo unresponsive: BlBasicExamples >> example3D (crash) BlBasicExamples >> exampleWithImage BlBenchmark >> example_821nestedEl_in1000x1000_mouseMove50ms (crash) BlMobilePhone >> open Thanks Ricardo -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Music beat detection and 60FPS graphics on Pharo?
by phil＠highoctane.be Oct. 14, 2017

Oct. 14, 2017

I'd like to do something like this: https://www.youtube.com/watch?v=vL7D4eU0lYE to showcase FFI, Bloc, and the Pharo liveliness. And once I get the basics working, level up in getting it working in a VR headset. Is there anyone having a binding to a library for dealing with the sound part, like FMod or other things like that? I see this as a medium term project, so, like I can get it working by the end of the year. TIA Phil

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Fwd: [Pharo-dev] Let's prepare for Google Code-In 2017 with Pharo Consortium
by Serge Stinckwich Oct. 14, 2017

Oct. 14, 2017

Dear Jigyasa, thank you for your hard work for promoting Pharo ! I followup your message to the Pharo-users mailing-list. If you want to help Pharo in a concrete way, please join the mentors team and try to propose exercices. Regards, ---------- Forwarded message ---------- From: Jigyasa Grover <grover.jigyasa1(a)gmail.com> Date: Thu, Oct 12, 2017 at 11:27 PM Subject: Re: [Pharo-dev] Let's prepare for Google Code-In 2017 with Pharo Consortium To: pharo-dev(a)lists.pharo.org Hello Pharo-ers ! On behalf of the community, I would like to thank each one of you for their significant contribution in the recently concluded *Google Summer of Code 2017* with *Pharo Consortium*. We aspire to take-off on a long flight after this successful stint. In this spirit, I proposed at ESUG 2017 that we take part in the upcoming *Google Code-In 2017*. GCI is a contest to introduce pre-university students (ages 13-17) to open source software development. Because Google Code-in is often the first experience many students have with open source, the contest is designed to make it easy for students to jump right in with /bite-sized tasks/ (3 to 5 days) having categorised as: Code, Documentation/Training, Outreach/Research, Quality Assurance, or User Interface. Students search for a task from the list created by us that interests them and claim it. They have at least three days to complete it. The student works on the task, getting guidance from mentors, if needed. Once the student is ready, they submit their work for review through the contest website. Mentors from the organisation evaluate the work, provide feedback, and if it's complete, accept it so that student can claim a new task. Otherwise, specific feedback is provided, and the student goes back to improving it. Participants who complete at least 1 task get a digital certificate. Participants who complete 3 or more tasks receive a t-shirt too. At the end of the contest, each organisation chooses five finalists to receive limited edition Google Code-in hoodies. Two finalists from each organisation get to be the grand prize winners and go on a trip to Google Headquarters in California ! The contest begins for students on November 28, 2017 at 09:00 (PST). *With organisation applications closing on October 24, 2017*, we need to be well prepared for this seasonâs application with a hope to get selected. As an open source evangelist and a Pharo developer, I would like to invite all the experienced members to be a part of the "GCI with Pharo Consortium" Team and mentor students. To get added to the âprivate repositoryâ (we need to keep prospective students away from the task list before the program begins ð ) where you can put in your tasks/suggestions kindly EMail me or any of the previously added mentor. Looking forward to an appreciable representation from the Pharo community. Best regards Jigyasa Grover Pharo Consortium Org Admin, Google Summer of Code 2017 [hidden email] Link to know more about GCI: https://codein.withgoogle.com/archive/ <https://codein.withgoogle.com/archive/ > Link to sample tasks: https://developers.google.com/open-source/gci/resources/example-tasks <https://developers.google.com/open-source/gci/resources/example-tasks> Link to FAQs: https://developers.google.com/open-source/gci/faq <https://developers.google.com/open-source/gci/faq > Link to contest rules: https://developers.google.com/open-source/gci/resources/contest-rules <https://developers.google.com/open-source/gci/resources/contest-rules> Link to GCI presentation for outreach: https://developers.google.com/open-source/gci/resources/ downloads/Google-Code-in-2016-slides.pdf <https://developers.google.com/open-source/gci/resources/ downloads/Google-Code-in-2016-slides.pdf> -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html -- Serge Stinckwich UMI UMMISCO 209 (IRD/UPMC/UY1) "Programs must be written for people to read, and only incidentally for machines to execute."http://www.doesnotunderstand.org/

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Zinc release?
by Herby VojÄÃk Oct. 13, 2017

Oct. 13, 2017

There are a few fixes out there for Zinc, not to mention convenience like ZnEntity class >> json:. Don't you consider releasing the new version (as I tried to update it by hand, it is not that easy, it has more components, to load HTTP I had to update Character-Encoding as well, so probably better if bumped as a group)? Herby

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Problem with input to XML Parser - 'Invalid UTF8 encoding'
by PBKResearch Oct. 13, 2017

Oct. 13, 2017

In another thread (on SVG Icons) Sven referred to ways of getting input from a URL for XMLDOMParser. I have recently had some problems doing this. I have found a workaround, so it is not urgent, but I thought I should put it on record in case anyone else is bitten by it, and so maybe Monty can look at it. I am using the subclass XMLHTMLParser, and my usual way of invoking it was: 1. XMLHTMLParser parseURL: <urlstring>. This works in most cases, but with one particular site - http://www.corriere.it/....., which is an Italian newspaper - I had frequent failures, with the error message 'Invalid UTF8 encoding'. The parser has the option of parsing a string, which is obtained by other means, so I tried reading it in with Zinc: 2. XMLHTMLParser parse: <urlstring> asZnUrl retrieveContents. And this worked, so clearly the encoding on the site is OK. I realised that the XML-Parser package has its own methods, which reproduce a lot of the functionality of Zinc, so I tried the equivalent: 3. XMLHTMLParser parse: <urlstring> asXMLURI get. To my surprise, this worked equally well. I had expected problems, because presumably forms (1) and (3) use the same UTF8 decoding. For now, I am using the form (3) for all my work, and have not had any problems since. So the message to anyone who is using the form (1) and getting problems is to try (2) or (3) instead. I am using Moose 6.1 (Pharo 6.0 Latest update: #60486) on Windows 10. I think most articles on the Corriere web site will generate the error, but one which has always failed for me is: http://www.corriere.it/esteri/17_ottobre_03/felipe-spagna-catalogna-discorso -8f7ac0d6-a86d-11e7-a090-96160224e787.shtml I tried to trace through the error using the debugger, but it got too confusing. However, I did establish that the failure occurred early in decoding the HTML <head>, in the line beginning <meta name="description".. The only unusual thing at this point is the French-style open-quote: '<'. Whether this could explain the problem I don't know. Any suggestions gratefully received. Peter Kenny

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How to recover selections in a fastlist after an update
by Steven Costiou Oct. 13, 2017

Oct. 13, 2017

Hi, I am using fastlists in a browser inspired from glmexamples, and when i use a stepping and that i update the browser (update method) all selections in lists are lost. Is there an automatic way to recover the selections or does it have to be handled in my code ? If so, i don't understand how to recover my selection, if i kept the fastlist in a var, doing list selection: myObject does not do anything. Steven.

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[Ann] PharoLauncher v1.0.1 released!
by Christophe Demarey Oct. 13, 2017

Oct. 13, 2017

Hi all, I just released a new version of the PharoLauncher 1.0.1. Here are major improvements since last version: Pharo launcher is now distributed with a Pharo 60 image with a 32-bits threaded VM (to avoid hangs when using OSProcess). Add a VM management utility able to find (and download) the appropriate VM for a given image. So, the launcher is NOT shipped anymore with an extra VM. It will fetch required VM when needed. Pharo Launcher files (images, VMs) are now considered as user Documents (easier to find). Consequently, they are now stored in the standard documents folder, i.e. $HOME/Documents/Pharo on OS X, $HOME/My Documents/Pharo on windows, $HOME/Pharo on Linux (some linux distributions provide a document folder but some others not, so we put it in the HOME directory in all cases). In this folder, you will find your images and virtual machines needed to run images. Use of ProcessWrapper to run images on Windows. Adds download of sources file for Pharo images > 60. Left panel is now used for official images and Jenkins jobs templates and right panel is used for local images. New mooc entry with the image ready to start the Pharo Mooc. New deprecated category to find old official Pharo images. Use system unzip when possible (Pharo unzip does not manage file permissions nor symbolic links). You can get platform bundles from files.pharo.org: Os X: http://files.pharo.org/platform/launcher/Pharo_1.0.1.dmg Windows: http://files.pharo.org/platform/launcher/pharo_installer-1.0.1.exe Linux: http://files.pharo.org/platform/launcher/Pharo-linux-1.0.1.zip Enjoy, Christophe. For those wanted more info on how the adequate VM is computed, here is the process: determine the image format version find (and optionnaly fetch) a compatible VM (a VM able to run this image format) and run the image to get its Pharo version number find (and optionnaly fetch) the appropriate VM for this specific Pharo image version. Sources files are also downloaded with the VM when applicable. run the image with the appropriate VM

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[ANN] Libusb binding + HID support for Pharo
by Julien Oct. 12, 2017

Oct. 12, 2017

Hello, A bit late, there is a Libusb [1] binding (using UFFI) and support for the Human Interface Device [2] (that uses the binding but is written in pure Smalltalk) for Pharo. Everything is on the github repository [3]. Â« Install Â» and Â« Quick start Â» sections give you all you need to start using the project. One could also have a look at the wiki [4]. It works on Linux but hasnât been tested on Mac OS nor Windows (it should work since libusb library works on these platforms). Do not forget to install the 32 bits versions of libusb on your computer. The purpose of this library is to provide the ability to use USB devices directly from Pharo. For example, one could get data from a PS3 controller, a mouse, a keyboard, an Arduino device, etcâ¦ Cheers, Julien PS: I realised this project during an internship in TaMÃ¨re SCRL company [5]. Thanks to them! Links: [1]: http://libusb.info <http://libusb.info/> [2]: https://en.wikipedia.org/wiki/Human_interface_device <https://en.wikipedia.org/wiki/Human_interface_device> [3]: https://github.com/tamerescrl/libusb-pharo <https://github.com/tamerescrl/libusb-pharo> [4]: https://github.com/tamerescrl/libusb-pharo/wiki <https://github.com/tamerescrl/libusb-pharo/wiki> [5]: http://tamere.eu <http://tamere.eu/>

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[ANN] "PDFtalk 2.0", "PDFtalk for Gemstone" and "Gemstone Fileout" released
by Christian Haider Oct. 12, 2017

Oct. 12, 2017

Hi, the second major version of the PDF library for VisualWorks is now available. The main driver for this was the project to port the library to Gemstone which is available as well. Also, the tool used for the port. Check the project page: https://wiki.pdftalk.de where you can find more information about the three projects and the release notes. Happy hacking, Christian Smalltalked Visuals GmbH HRG: HRB 14115 HL Amtsgericht LÃ¼beck GeschÃ¤ftsfÃ¼hrer: Christian Haider Media Docks Willy-Brandt-Allee 31c 23554 LÃ¼beck, Germany <http://www.smallcharts.de/> http://www.smallCharts.de Tel.: +49 (0)170 / 1880 250

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