March 2015 - Pharo-users - lists.pharo.org

CFP IWST 2015 - Reminder - Deadline April 10th
by jannik laval March 5, 2015

March 5, 2015

[Please accept our apologies if you receive multiple copies of this call] [Please send to interested colleagues / mailing-lists] ************************************************************************************************************ CALL FOR PAPERS IWST15 â International Workshop on Smalltalk Technologies Brescia, Italy; July 15, 2015 http://www.esug.org/wiki/pier/Conferences/2015/International-Workshop-IWST_… ************************************************************************************************************ ------------------- Goals and scopes ------------------- The goals of the workshop is to create a forum around advances or experience in Smalltalk and to trigger discussions and exchanges of ideas. The topics of your paper can be on all aspect of Smalltalk, theoretical as well as practical. Participants are invited to submit research articles or industrial papers. This year we want to open two different tracks: one research track and one industrial track with less scientific constraints. We expect papers of three kinds: Short position papers describing emerging ideas Long research papers with deeper description of experiments and of research results. Industrial papers with presentation of real and innovative Smalltalk applications; this kind of paper should enlighten why Smalltalk is really appropriate for your application. We will not enforce any length restriction. -------------------- Important Dates -------------------- *Submission deadline: April 10th, 2015* Notification deadline: May 20th, 2015 Workshop : July 15th, 2015 All accepted papers will be published in ACM DL ------------------- Topics ------------------- We welcome contributions on all aspects, theoretical as well as practical, of Smalltalk related topics such as: -Aspect-oriented programming, -Design patterns, -Experience reports, -Frameworks, -Implementation, new dialects or languages implemented in Smalltalk, -Interaction with other languages, -Meta-programming and Meta-modeling, -Tools ------------------- Best Paper Award ------------------- To encourage the submission of high-quality papers, the IWST organizing committee is very proud to announce a Best Paper Award for this edition of IWST. We thank the Lam Research Corporation for its financial contribution which makes it possible for prizes for the three best papers: 1000 USD for first place, 600 USD for second place and 400 USD for third place. The ranking will be decided by the program committee during the review process. The awards will be given during the ESUG conference social event. The Best Paper Award will take place only with a minimum of six submissions. Notice also that to be eligible, a paper must be presented at the workshop by one of the author and that the presenting author must be registered at the ESUG conference. ------------------- Publication ------------------- Both submissions and final papers must be prepared using the ACM SIGPLAN 10 point format. Templates for Word and LaTeX are available at http://www.acm.org/sigs/sigplan/authorInformation.htm. This site also contains links to useful informations on how to write effective submissions. ------------------- Submission ------------------- All submissions must be sent via easychair: https://easychair.org/conferences/?conf=iwst2015 ------------------- Program chairs ------------------- Anne Etien (UniversitÃ© de Lille 1, France) Jannik Laval (Ecole des Mines de Douai, France) -- ~~Jannik Laval~~ Ãcole des Mines de Douai Enseignant-chercheur http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info http://car.mines-douai.fr/

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Linux and Windows 3.0 differences
by Sebastian Heidbrink March 5, 2015

March 5, 2015

Hi! I just returned from a one on one Smalltalk introduction I gave tonight. Can you please check for differences in the current Pharo3.0 one-click-images for Windows and Linux? We had issues tonight that make it quite understandable that some beginners might stop looking at Smalltalk after a while. Date fromString: method contains a method comment on Windows and on Ubuntu it doesn't even include an implementation. The behavior of icons in the Class hierarchy are inconsitent on Ubuntu. Where as entering a class comment changes the icons from an exclamation mark to the green class icon on windows; in Ubuntu the super classes of the class remain exclamation marks even hough they include comments. The user thought he did something wrong,... or something is forbidden in general.... the meaning of the icons does not to seem self-explainatory Pharo 4.0 the mouse buttons are switched,... that is annoying copy&paste from Chrome to Pharo 4.0 workspace/Playground on Ubuntu did not work either. But now also something positive. The user tried to get started in Squeak last week and spent hours to find out how things work and how to install stuff. Tonight we setup pharo-launcher and two images.... 5 minutes later: "Wow,... that was fast! And we can start now?" :-D By the way! Windows 8 pharo-launcher? Is there anything special to it? I was not able to get it going tonight. Cheers! Sebastian

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Re: [Pharo-users] scaled decimal number for currency
by Pablo R. Digonzelli March 5, 2015

March 5, 2015

I know that. the problem is that glorp generates the string in question , not me. Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Metrotec SRL 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714 ----- Mensaje original ----- De: "Werner Kassens" <wkassens(a)libello.com> Para: "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org> Enviados: Jueves, 5 de Marzo 2015 11:04:01 Asunto: Re: [Pharo-users] scaled decimal number for currency do you perhaps mean this? b:=ScaledDecimal newFromNumber: 5.8777 scale: 2." 5.88s2" b printShowingDecimalPlaces:2." '5.88'" on a stream you can use 'printOn: aStream showingDecimalPlaces: placesDesired' werner On 03/05/2015 01:21 PM, Pablo R. Digonzelli wrote: > Hi, I want to use scaled decimal numbers for currency amounts. I am > using Glorp too. > The problem is that when Glorp generates sql sentences has a problem > with #printOn: of ScaledDecimal wich produces output that include the > scale value. > I do not want to modify printOn: on ScaledDecimal. Any suggestion for > this problem? > > TIA > > > > > **** > ------------------------------------------------------------------------ > *Ing. Pablo Digonzelli* > Software Solutions > IP-Solutiones SRL > Metrotec SRL > 25 de Mayo 521 > San Miguel de TucumÃ¡n > Email: pdigonzelli(a)softsargentina.com > pdigonzelli(a)gmail.com > Cel: 5493815982714 >

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Re: [Pharo-users] scaled decimal number for currency
by Pablo R. Digonzelli March 5, 2015

March 5, 2015

I'll try. Supose i have an item wich has an id and a price . For example id is 77 and price 41.69. If I use ScaledDecimal with scale 2 for price , glorp create this string for query execution: 'INSERT INTO item (id,price) VALUES (77,41.69s2); and of course give me a GlorpDatabaseWriteError for the 's2' part of the string. If i comment the line "aStream nextPut: $s; print: scale." in printOn: of ScaledDecimal glorp works with no problem. I hope you understand. Sorry for my bad english TIA Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Metrotec SRL 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714 De: "stepharo" <stepharo(a)free.fr> Para: "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org> Enviados: Jueves, 5 de Marzo 2015 10:04:06 Asunto: Re: [Pharo-users] scaled decimal number for currency can you give example? Le 5/3/15 13:21, Pablo R. Digonzelli a Ã©crit : Hi, I want to use scaled decimal numbers for currency amounts. I am using Glorp too. The problem is that when Glorp generates sql sentences has a problem with #printOn: of ScaledDecimal wich produces output that include the scale value. I do not want to modify printOn: on ScaledDecimal. Any suggestion for this problem? TIA Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Metrotec SRL 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714

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scaled decimal number for currency
by Pablo R. Digonzelli March 5, 2015

March 5, 2015

Hi, I want to use scaled decimal numbers for currency amounts. I am using Glorp too. The problem is that when Glorp generates sql sentences has a problem with #printOn: of ScaledDecimal wich produces output that include the scale value. I do not want to modify printOn: on ScaledDecimal. Any suggestion for this problem? TIA Ing. Pablo Digonzelli Software Solutions IP-Solutiones SRL Metrotec SRL 25 de Mayo 521 San Miguel de TucumÃ¡n Email: pdigonzelli(a)softsargentina.com pdigonzelli(a)gmail.com Cel: 5493815982714

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Roassal scroll bar builder
by Pierre CHANSON March 5, 2015

March 5, 2015

Hi all, RTScrollBarBuilder allows you to add a scalable scroll bar or scroll pad to your Roassal view. see examples in RTScrollBarBuilderExamples, or try to execute this in a workspace: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= b := RTMondrian new. b shape rectangle withBorder; width: [ :cls | cls numberOfVariables * 5]; height: #numberOfMethods; linearFillColor: #numberOfLinesOfCode within: RTObject withAllSubclasses. b nodes: RTObject withAllSubclasses. b edges connectFrom: #superclass. b layout tree. b build. b2 := RTScrollBarBuilder new. b2 view: b view. b2 objects: b view elements. b2 build inspect -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Feedbacks are welcome ! cheers, Pierre â

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DNS change files.pharo.org
by Marcus Denker March 5, 2015

March 5, 2015

Hello, We will switch the DNS entry from an A type to a CNAME that points to a different server (for caching) this afternoon at 1pm local time. It should all continue to work (and hopefully faster) Marcus

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Fwd: ZnUrl issue with German characters
by Sven Van Caekenberghe March 5, 2015

March 5, 2015

As this might be useful to others, forwarding: > Begin forwarded message: > > Subject: Re: ZnUrl issue > From: Sven Van Caekenberghe <sven(a)stfx.eu> > Date: 5 Mar 2015 09:55:46 CET > To: Gerhard Obermann <obi068(a)gmail.com> > > Hi Gerhard, > >> On 05 Mar 2015, at 08:36, Gerhard Obermann <obi068(a)gmail.com> wrote: >> >> Hi sven, >> >> We are using Zinc (Gemstone) to access a restful interface. >> >> I didnt find a solution to send an url with german characters like "Ã¶Ã¤Ã¼". >> Am i missing something? >> >> All such tests fails: >> >> ZnUrl fromString: '%F6lo'. >> ZnUrl fromString: 'Ã¶lo'. >> ZnUrl fromString: 'Ã¶lo' encodeAsUTF8 asString. >> >> json := (client := ZnClient new) >> url: url; >> accept: ZnMimeType applicationJson; >> contentReader: [ :entity | | parserClass | >> parserClass := Smalltalk at: #JSJsonParser. >> parserClass parse: entity contents ]; >> ifFail: [:ex | ^ self error: 'HTTP request failed!' ]; >> get. >> >> Regards Gerhard > > This goes like this (in Pharo 4): > > 'Ã¤' utf8Encoded hex => 'c3a4' > > 'http://de.wikipedia.de/wiki/Enzyklop%C3%A4die' asZnUrl. > > ZnUrl new > scheme: #http; > host: 'de.wikipedia.de'; > addPathSegment: #wiki; > addPathSegment: 'EnzyklopÃ¤die'; > yourself. > > Check the class comment: the print & parse forms are encoded, while the components & accessors are not. > > Does this work for you ? > > Sven Gerhard solved his use case as follows: ZnUrl new scheme: #http; host: 'dev.virtualearth.net'; addPathSegments: #('REST' 'v1' 'Locations'); queryAt: 'query' add: 'JÃ¤gerstraÃe'; yourself. Sven

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Statistics package in Pharo?
by Julien Delplanque March 4, 2015

March 4, 2015

Hi everyone, Does anyone know if there is a package that contains implementation of statistics tests like Kolmogorov-Smirnov test, Khi-2 test, etc? I did fast research in Smalltalkhub but didn't found anything. Thanks in advance, Julien

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Evaluating scripts within Pillar
by Alexandre Bergel March 3, 2015

March 3, 2015

Hi! I am now digging into Pillar. My goal is to be able to insert Roassal script and having it executed. Scripts provided within [[[ ]]] may be evaluated using the variable âeval=trueâ. Here is an example: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= PRHTMLWriter defaultConfigurations anyOne inputString: '100 factorial = [[[eval=true stream nextPutAll: 100 factorial asString ]]]'; outputFile: 'myFirstPillarExport.html' asFileReference; export -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= âstreamâ is a hardcoded variable name which represents the stream on which you have to write your result. What you write in stream is pillar-friendly. This means you can write something like: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= PRHTMLWriter defaultConfigurations anyOne inputString: '100 factorial = [[[eval=true stream nextPutAll: ''""'', 100 factorial asString, ''""'' ]]]'; outputFile: 'myFirstPillarExport.html' asFileReference; export -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= I have tried to insert some Roassal visualization, and it works pretty well. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= PRHTMLWriter defaultConfigurations anyOne inputString: ' !!Example of a factorial 50 factorial = [[[eval=true stream nextPutAll: ''""'', 100 factorial asString, ''""''. ]]] !!Some Roassal visualizations Here is a small Mondrian example [[[eval=true b := RTMondrian new. b nodes: (1 to: 100). b layout grid. b build. aView := b view. RTHTML5Exporter new insert: aView named: ''Roassal test'' inPillarStream: stream ]]] Another example with Grapher this time: [[[eval=true b := RTGrapher new. b extent: 300 @ 200. ds := RTStackedDataSet new. ds interaction popupText. ds barShape width: 10. ds points: #(4 5 1 -2 5 6). b add: ds. "b axisX noLabel; noTick. " b build. RTHTML5Exporter new insert: b view named: ''A Graph'' inPillarStream: stream ]]] '; outputFile: 'myFirstPillarExport.html' asFileReference; export -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Pillar is very well done! Congrats to the authors! Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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