February 2014 - Pharo-users

Re: [Pharo-users] mathematical models
by Natalia Tymchuk Feb. 16, 2014

Feb. 16, 2014

Hello, Code which I used to build that plots is on the repository http://smalltalkhub.com/#!/~NataliaMoskovchuk/SciSmalltalk-Metrificator Best regards, Natalia On Feb 14, 2014, at 9:53 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > Hi Paolo > > Where are you in italy? This is wonderful to hear that :) > > If you need slides about syntax and others. Do not hesitate to ask me. I have a lot of slides. > Now for your question I do not know. > I know that natalia tymchuk worked on differential equation resolvers. > > http://natalia.tymchuk.me/2013/09/code-functionality-assessment.html > > Now I do not know where the code has been published. > > For plotting there are PlotMorph or GraphET. > > >> Hi Guys! >> >> I'm going to start to teach as assistant professor of Operative Research, and i'd like to teach some stuff of Pharo. I was wondering if there are some Packages about mathematical models as Lotka-Volterra or other models about the dynamics of biological systems already implemented (with plot too). >> >> Thanks for the help. >> Paolo >

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Streaming API for Pharo?
by Arturo Zambrano Feb. 16, 2014

Feb. 16, 2014

Hi All, we are playing with Roassal for the visualization of Twitter data. So far we used Zn-SSO to connect to twitter and call REST API to get some tweets for playing. Now, we would like to use the streaming API. I could not figure out how to do this with Zn-*. According to Twitter Streaming API docs: Some HTTP client libraries only return the response body after the connection has been closed by the server. These clients will not work for accessing the Streaming API. You must use an HTTP client that will return response data incrementally I would like to know if Zn allows to get data incrementally. Furthermore it would be great to know if there is some example where I can start from. Once we have our toy working we plan to release it to the community. thanks. art

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Choosing 'Sb' as an umbrella package prefix?
by Michael J. Forster Feb. 14, 2014

Feb. 14, 2014

Hi, I have two questions regarding the choice of package prefix, but, first, some background. We have a number of packages that I would like to publish as open source on smalltalkhub.com over the coming year. As well, we have several proprietary customer packages in our internal MC repository. Obviously, we want to avoid name collisions with everyone else, but we want to keep our package and class names from bloating, too. I'm thinking of choosing the umbrella package/class prefix 'Sb' (for the element Antimony, shamelessly following Sven's example) for everything we write. We would use one or two further characters to distinguish our actual packages and classes (public and proprietary). For example, SbWA... - our Seaside utilities SbPG... - our PostgresV2 utilities SbPr... - our Prolog query engine SbMt... - a proprietary client project My first question: Does this sound reasonable? I don't want to give potential users the impression that unstated dependencies exist between our open source 'Sb' packages. I'm simply trying to carve out a namespace. Second, I installed all of the packages I could using the Metacello Configuration browser in Pharo 2.0 and collected the first three characters of all packages and classes. I didn't find any use of the 'Sb' prefix. Does anyone know of a conflict? Thanks! Mike -- Michael J. Forster, B.Sc. (Hons.), B.Sc. COO, Programmer Shared Logic Inc.

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Re: [Pharo-users] [gsoc-mentors] Re: GSoC: call for ideas
by Nicolas Petton Feb. 14, 2014

Feb. 14, 2014

Paolo Bonzini writes: > Il 11/02/2014 10:42, Damien Cassou ha scritto: >> Hi fellow Pharo hackers, >> >> ESUG, the European Smalltalk User Group, is applying for this >> year's Google Summer of Code. As you probably know, the Summer >> of Code provides the opportunity to fund students to work during >> the summer on Pharo. Please reply to this >> email (be sure to use "Reply to all") if you have ideas you >> would like to propose. >> >> Please include a summary of the project and links to web pages >> that can help prospective students to write their application. >> Please also include the following information: >> >> - if applicable, other dialects that you would be willing to >> mentor this project for >> >> - the skill level >> >> - name of the mentor(s), email addresses, and possibly any IRC >> network/channel/nickname where they can be found. >> >> Thanks for contributing to ESUG's Summer of Code application! >> > > Just a note that I haven't yet processed this thread, but our ideas page > is already looking pretty well (and Pharo section is big) so I'll > probably do it in the weekend or next Monday. I can do it if you want. Cheers, Nico

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Athens question - #openInSceneView
by Torsten Bergmann Feb. 14, 2014

Feb. 14, 2014

If I understand correctly #openInSceneView wraps a morph in an Athens scene. I tried some examples: "Smalltalk ui icons configIcon asMorph openInSceneView" "BorderedMorph new openInSceneView" First two work, but the third: "EllipseMorph new openInSceneView" brought up a yellow morph - but as rectangle not as ellipse like in "EllipseMorph new openInWorld". Havent looked deeper. Incomplete or a bug? Thx T.

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Re: [Pharo-users] Improving Strings Manipulation topic
by Daniela Meneses Feb. 14, 2014

Feb. 14, 2014

Hi Doru: Thank you for your reply, I will take a look to them. I'm from Bolivia. :D -- Cheers, Dani

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GSoC: call for ideas
by Damien Cassou Feb. 13, 2014

Feb. 13, 2014

Hi fellow Pharo hackers, ESUG, the European Smalltalk User Group, is applying for this year's Google Summer of Code. As you probably know, the Summer of Code provides the opportunity to fund students to work during the summer on Pharo. Please reply to this email (be sure to use "Reply to all") if you have ideas you would like to propose. Please include a summary of the project and links to web pages that can help prospective students to write their application. Please also include the following information: - if applicable, other dialects that you would be willing to mentor this project for - the skill level - name of the mentor(s), email addresses, and possibly any IRC network/channel/nickname where they can be found. Thanks for contributing to ESUG's Summer of Code application! -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

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Slides for "Pharo: A Reflective System"
by Marcus Denker Feb. 13, 2014

Feb. 13, 2014

Hi, Somehow I got myself into giving a 30min âcoffee breakâ talk here at the lab. Pharo: A Reflective System http://www.slideshare.net/MarcusDenker/pharo-a-reflective-system http://marcusdenker.de/talks/14Inria30MinScience/PharoAReflectiveSystem.pdf Nothing new, of courseâ¦ but it was not that easy to do a 30minute talk about that, I have to say. (But seemingly it worked). Marcus

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[OT] A Little Smalltalk, SmallWorld, SmallWorld 2007, Athena... and now Gossip
by Sergi Reyner Feb. 13, 2014

Feb. 13, 2014

Hello everyone! This is a bit off-topic but I thought it may interest some of you! A few weeks ago I got interested in making simple 'clicky' games that could be played on Android, mostly for my daughter. After looking around, I found LibGDX for Java, which runs on Windows, Mac, Linux, Android, iOS, web... Of course, at one point I got fed up with Java and decided to look for a tiny Smalltalk that I could embed inside my game, to save me the trouble of writing Java code. And I found the software mentioned in the topic. Most of you have probably heard of at least the first one. Long story short, I mixed SmallWorld, SmallWorld 2007 and Athena, fixed a couple of bugs, hacked enough support it to allow me to rewrite in Smalltalk the demo game I had written in Java, added some classes and convenience methods, and finally found what I consider to be a cool name for all of it: Gossip :) Here are some links: http://web.engr.oregonstate.edu/~budd/SmallWorld/ReadMe.html http://bergel.eu/athena/?Athena http://russell-allen.com/computing/smallworld/ https://github.com/raydeejay/gossip https://github.com/raydeejay/gossip/wiki https://github.com/raydeejay/escape-game Feel free to yell at me or whatever :D Cheers, Sergi

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Twitter Streaming API for Pharo
by Arturo Zambrano Feb. 13, 2014

Feb. 13, 2014

Just fixing the subject of my post, sorry for the ambiguous previous one. On Thu, Feb 13, 2014 at 11:00 AM, Arturo Zambrano <arturo.zambrano(a)gmail.com > wrote: > Hi All, > we are playing with Roassal for the visualization of Twitter data. > So far we used Zn-SSO to connect to twitter and call REST API to > get some tweets for playing. > > Now, we would like to use the streaming API. I could not figure out how to > do this with Zn-*. > > According to Twitter Streaming API docs: > Some HTTP client libraries only return the response body after the > connection has been closed by the server. These clients will not work for > accessing the Streaming API. You must use an HTTP client that will return > response data incrementally > > I would like to know if Zn allows to get data incrementally. Furthermore > it would be great to know if there is some example where I can start from. > > > Once we have our toy working we plan to release it to the community. > > thanks. > > art > > > > >

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