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

Crash in Athens
by Alexander Samoylovich March 5, 2017

March 5, 2017

Hello I am writing graphic demo programs using Athens on Mac Sierra. Time by time Pharo VM crashes. Programs not using Athens work reliably. I believe the behavior is reproducible. How should I report a bug? Alex

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Google Summer of Code 2017: Call for mentors for Pharo Consortium
by Serge Stinckwich March 5, 2017

March 5, 2017

Heartiest Congratulations ! Pharo Consortium has been selected as a mentor organisation for Google Summer of Code 2017. Google Summer of Code is a global program focused on introducing students to open source software development. Students work on a 3 month programming project with an open source organisation during their break from university. Read more at https://summerofcode.withgoogle.com/ How the program works ? Organizations: Open source projects apply to be mentor organizations. Once accepted, organizations discuss possible ideas with students and then decide on the proposals they wish to mentor for the summer. They provide mentors to help guide each student through the program. Mentors: Existing contributors with the organizations can choose to mentor a student project. Mentors and students work together to determine appropriate milestones and requirements for the summer. Mentor interaction is a vital part of the program. A mentor may propose or endorse a project and each project has to be about Pharo or its ecosystem (e.g., a library). Projects will be mentored by one or more mentors and executed by one student. Students: Students contact the mentor organizations they want to work with and write up a project proposal for the summer. If accepted, students spend a month integrating with their organizations prior to the start of coding. Students then have three months to code, meeting the deadlines agreed upon with their mentors. Student coding period: May 30 - Aug 29 (Entire timeline can be viewed at: https://summerofcode.withgoogle.com/how-it-works/#timeline) Student stipend: https://developers.google.com/open-source/gsoc/help/student-stipends We are currently at the phase of identifying mentors and projects. The next phases will be about students selecting projects, and the community selecting the projects with their associated mentors and students which will be sponsored by the GSOC program. How to register ? Simply by replying to this email and joining the Slack channel... to have more discussion about what project the mentor will take up, what she/he wants at the end of the coding period and then we can invite them to the GSoC org dashboard). Hence, we invite regular & enthusiastic Pharo contributors to be a mentor with Pharo Consortium for GSoC 2017: 1. Kindly respond on this thread if you'd like to be a mentor, or wish to propose a project. An existing list of projects is already available here: http://gsoc.pharo.org/ and we already have a handful of projects and mentors chosen. Feel free to collaborate with existing mentors as well. 2. Join dedicated channels, #gsoc-students for general interactions with students & #gsoc-planning channel only for GSOC admins and mentors on Pharo slack. In order to get an invitation for pharoproject.slack.com visit the URL here: http://slackinvites.pharo.org/ 3. Please open relevant issues and make a roadmap of the projects being mentored by you so that students can start contributing to them already. If you want to mentor a project and there is no open-source repository at the moment, please built one ASAP. 4. If you know any students that might be interested to work on Pharo during the summer and be a part of GSoC as well, please ask him/her to start contributing to the Pharo projects, discuss their proposal, follow instructions that shall be posted soon in this mailing thread and submit their application by April 3, 2017. We don't know the number of slots attributed by Google to Pharo org, but the more students proposal we will receive, the more slots will be attributed to us. We remind you about the mentor responsibilities: ... to your Org Admins - Communicate availability and interaction expectations - Inform when mentoring capacity will be reduced, as early as possible (e.g., family, health, vacation) - Inform when there is an issue with a student - Lacking communication, activity, visibility (MIA), or progress - Participant Agreement violations (e.g., plagiarism, harassment, fraud) - Bad fit or stepping down - Formally evaluate student participation. - Communicate with admin and student before failing ... to your Students - Help and/or teach the student - how to be a part of your community - communicate more effectively and in the open - work with your orgâs preferred communication channel (IRC, Slack, etc) - use your orgâs version control system - ask good questions and get answers to their questions - provide convincing technical argument and constructive discussion - be independently motivated and productive - solve difficult technical problems - Keep track of their progress, keep student informed as to their status - Communicate on a regular basis, once a week or better (for GSoC) - Give constructive feedback, be patient, and be respectful - Respond to questions within 24 hours (occasionally under 36 hours is ok) - Establish realistic work objectives and timeline expectations - Re-evaluate scope with student when significantly ahead of or behind expectations - Work with devs and community to facilitate acceptance of student work Read more about responsibilities here: https://developers.google.com/open-source/gsoc/help/responsibilities Looking forward to a great guided summer by the talented mentors of our organisation. Warm Regards Pharo Organisation Admins (Alexandre Bergel, Jigyasa Grover, Serge Stinckwich & Yuriy Tymchuk)

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Lost access in Smalltalkhub
by Juan Manuel Vallejos March 5, 2017

March 5, 2017

Hi, I lost access to my smalltalkhub account and wanted to ask if you know who I should contact to solve my problem. Regards. Juan Manuel Vallejos

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[ANN] XML Metadata Interchange (XMI) for Pharo
by Torsten Bergmann March 4, 2017

March 4, 2017

Hi, if you work with UML, modeling tools or model data exchange often you might know XMI - the XML Metadata Interchange format. I wrote a little package that makes it easier to work and browse data based on this format within Pharo. For instance you can open an XMI object either from a given stream or URL: (XMIFile fromURL: 'http://www.omg.org/spec/UML/20131001/UML.xmi') inspect You can also open a file XMIFile importFile Code is available on https://github.com/astares/Pharo-XMI The package includes a small GT extension allowing you to walk and dive through the XMI structure (see attached screenshot) and as the XMI nodes are unified it is easy to code some code generators or transformers in Pharo afterwards. For instance I used this package for a simple Pharo code generator based on Eclipse EMF models/diagrams. Within the code you will find some examples to browse through prominent XMI models like: - UML Spec => (XMIFile fromURL: 'http://www.omg.org/spec/UML/20131001/UML.xmi') inspect - VISUAL PARADIGM => (XMIFile fromURL: 'https://raw.githubusercontent.com/staruml/XMI/master/unittest-files/VP_XMI2…') inspect - ENTERPRISE ARCHITECT => (XMIFile fromURL: 'https://raw.githubusercontent.com/staruml/XMI/master/unittest-files/EA_XMI2…') inspect - ARCHIMATE => (XMIFile fromURL: 'https://www.reflektis.com/repos/archimate-3.0.xmi) inspect Once the inspector opens you have to select the "rootNode" and then the "Hierarchy" tab. In Pharo 6 you can load "XMI" right from catalog. Hope the package is useful for others too. Bye T.

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[ANN] Regex Tester Tool for Pharo
by Torsten Bergmann March 4, 2017

March 4, 2017

Hi, I wrote a little tool to test regular expressions and verify that given samples match it. It also helps to divide an expression into subexpressions to retrieve parts of a matched string. Screenshot is attached. Code, load instructions and full tutorial on how to use it is on https://github.com/astares/Pharo-Regex-Tools Hope it is useful for others too. Have fun! Bye T.

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Arduino
by olivier auverlot March 4, 2017

March 4, 2017

Hi, Since some weeks, I do some experimentations with an Arduino board. I search now to use my Arduino with Pharo. I have found some informations on the web but nothing seems usable or up to date for the latest versions of Pharo. Someone have worked on this domain ? I'm interested by a firmata client protocol or why not a solution to program an Arduino directly from Pharo. Best regards Olivier ;-)

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Voyage: VOToOneDescription or VOMongoToOneDescription
by Hilaire March 4, 2017

March 4, 2017

Hi, VOToOneDescription or VOMongoToOneDescription, that is the question? I am confuse because: This one works: mongoStartDate <mongoDescription> ^ VOToOneDescription new attributeName: 'startDate'; accessor: (MAPluggableAccessor read: [:loan | loan startDate] write: [:loan :dateAndTime | loan startDate: dateAndTime asDate]); yourself This one breaks: mongoStartDate <mongoDescription> ^ VOMongoToOneDescription new attributeName: 'startDate'; accessor: (MAPluggableAccessor read: [:loan | loan startDate] write: [:loan :dateAndTime | loan startDate: dateAndTime asDate]); yourself However, the tutorial on Entreprise Pharo book only mention the later one. So what the differences? Thanks Hilaire -- Dr. Geo http://drgeo.eu

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Re: [Pharo-users] adding messages dinamically to a single instance object
by Pablo R. Digonzelli March 4, 2017

March 4, 2017

Hi Steven . For the moment i just want to understand how it is possible. In the future may be i can apply this mechanism for future projects. Pablo Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Dividato SA 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714 De: "Steven Costiou" <steven.costiou(a)kloum.io> Para: "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org> CC: "Pablo Digonzelli" <pdigonzelli(a)gmail.com> Enviados: Viernes, 3 de Marzo 2017 11:03:23 Asunto: Re: [Pharo-users] adding messages dinamically to a single instance object Hi, could you describe why you need this ? Do you have a usecase ? Just interested to know, as i work on similar mechanisms. Steven. Le 2017-03-03 14:55, Pablo R. Digonzelli a Ã©crit : Thanks Denis, I will take a look . I think this is what i need. Tia Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Dividato SA 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714 De: "Denis Kudriashov" <dionisiydk(a)gmail.com> Para: "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org> Enviados: Viernes, 3 de Marzo 2017 10:11:53 Asunto: Re: [Pharo-users] adding messages dinamically to a single instance object Hi. Look at project Talents https://github.com/tesonep/pharo-talents . Idea is to implement behaviour (also with state) in normal way with classes and then dynamically install it to any existing objects 2017-03-03 14:07 GMT+01:00 Pablo R. Digonzelli < pdigonzelli(a)gmail.com > : BQ_BEGIN Hi all. I need to know how can i do if i want add new behaviour ( a new method ) to a single instance object of a class. It means not to add new selector to the class but i want a single instance responds that mesage. Where can i read about it? Tia Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Dividato SA 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714 BQ_END -- kloum.io

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Re: [Pharo-users] adding messages dinamically to a single instance object
by Pablo R. Digonzelli March 4, 2017

March 4, 2017

Thanks Denis, I will take a look . I think this is what i need. Tia Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Dividato SA 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714 De: "Denis Kudriashov" <dionisiydk(a)gmail.com> Para: "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org> Enviados: Viernes, 3 de Marzo 2017 10:11:53 Asunto: Re: [Pharo-users] adding messages dinamically to a single instance object Hi. Look at project Talents https://github.com/tesonep/pharo-talents . Idea is to implement behaviour (also with state) in normal way with classes and then dynamically install it to any existing objects 2017-03-03 14:07 GMT+01:00 Pablo R. Digonzelli < pdigonzelli(a)gmail.com > : Hi all. I need to know how can i do if i want add new behaviour ( a new method ) to a single instance object of a class. It means not to add new selector to the class but i want a single instance responds that mesage. Where can i read about it? Tia Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Dividato SA 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714

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Please commit/fix GAMysqlBinReader>>#timeStampFrom:
by Holger Freyther March 3, 2017

March 3, 2017

Hi, on Pharo5 and "latest"(?) stable release of Garage it is implemented as: timeStampFrom: aStream "ByteStream" | dt | dt := self dateTimeFrom: aStream. ^ dt ifNil: [nil] ifNotNil: [dt asTimeStamp] There is no implementor of asTimeStamp. From what I read is a TimeStamp is a reduced range and asTimeStamp can be omitted? thank you holger

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