March 2016 - Pharo-users - lists.pharo.org

Changing version of a dependency of a dependency
by Peter UhnÃ¡k March 14, 2016

March 14, 2016

How do I change the loaded version of a dependency other dependency is loading? Imagine the following scenario: I have ProjectXXX that depends on ProjectYYY, and projectYYY depends on ProjectZZZ. Now normally all the dependencies are directed to the master branch. Now what I would like to do is to "lock" the version in BaselineOfXXX for both YYY and ZZZ. So when project XXX is loaded, then instead github://projectYYY:development, and github://projectZZZ:development will be loaded. Can I do that without changing the baseline of ProjectYYY? Thanks, Peter â

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Custom type inference and RoelTyper
by Peter Uhnak March 14, 2016

March 14, 2016

Hi, Moose/FAMIX uses RoelTyper for type inference, how this does not seem to be maintained (last version 2013), and for my purposes is lacking. So do we have something more advanced, even at the expense of speed? Other alternative would be to either extend RoelTyper or write something custom that would be ran alongside RoelTyper. Examples of such extensions would be extracting the type from meta-annotations and the actual argument names. (e.g. if an argument is named aString, I can safely assume that it will be String). Thanks, Peter

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How to access XML tag name?
by stepharo March 13, 2016

March 13, 2016

Hi Yesterday I started to hack a smart SAX handler. The idea is that I want to just specify the tags I want to visit and the SAX handler should invoke (generated) visit methods. Like that I can easily get visitors on XML domain. Here is an example of what I did. | h | h := SmartSAXHandler new visitor: (MyFilmVisitor new visitTags: #(FILM ROLE)); on: FileSystem workingDirectory / 'FILMS.XML'. h parseDocument. ^ h SmartSAXHAndler >> startElement: aQualifiedName attributes: aDictionary (visitor shouldVisit: aQualifiedName) ifTrue: [ visitor perform: (visitor createdVisitSelector: aQualifiedName) with: aQualifiedName with: aDictionary ] Object subclass: #GenericTagSAXVisitor instanceVariableNames: 'visitTag visitTags' classVariableNames: '' category: 'SmartXMLHandler' GenericTagSAXVisitor>>visitTags: aCollection "set the tags that will lead to a call to a visitTag:with: method in the visitor" visitTags := aCollection collect: [ :each | each asLowercase ]. self createVisitMethods. and in a subclass the visit* methods automatically generated Now I could not get when I have a <TITRE>Vertigo</TITRE> where I can get the Vertigo information. I redefined several methods of SAXhandler but without success. <?xml version="1.0" encoding="iso-8859-1"?> <FILMS> <FILM annee="1958"> <TITRE>Vertigo</TITRE> <GENRE>Drame</GENRE> <PAYS>USA</PAYS> <MES idref="3"/> <ROLES> <ROLE> <PRENOM>James</PRENOM> <NOM>Stewart</NOM> <INTITULE>John Ferguson</INTITULE> </ROLE> <ROLE> <PRENOM>Kim</PRENOM> <NOM>Novak</NOM> <INTITULE>Madeleine Elster</INTITULE> </ROLE> </ROLES> <RESUME>Scottie Ferguson, ancien inspecteur de police, est sujet au vertige depuis qu'il a vu mourir son collegue. Elster, son ami, le charge de surveiller sa femme, Madeleine, ayant des tendances suicidaires. Amoureux de la jeune femme Scottie ne remarque pas le piege qui se trame autour de lui et dont il va etre la victime... </RESUME> </FILM>

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Re RFC Minecraft Server
by Andy Burnett March 13, 2016

March 13, 2016

Ben said >>> Which one? <<< The one people seem to use is called pocket mine. (https://www.pocketmine.net) There may be others. >>> I was thinking of the standard PC version since I understood the PE version was not so amenable to mods. Actually my kids have been playing PE edition on iPads, and I bought them second hand laptops to run the PC edition to do modding. Still discovering how it all works. <<< The PE (iPad etc) version seems to be catching up in terms of features, and it does allow some level of mods. However, I agree that the full PC version is probably the better target. I wonder if there are any docs that list the Api we need to support.

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[Pillar] Ascii doc
by Thibault ARLOING March 13, 2016

March 13, 2016

Hi, Yann Dubois and me were working on an asciidoc exporter for Pillar, he is now ready and available in the development version of Pillar. We will be gratefull for any feedbacks, thanks Good evening Thibault Arloing

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[FUN] Fibonacci spiral
by Hilaire March 13, 2016

March 13, 2016

Hello, A step by step construction of the Fibonacci Spiral with Smalltalk code and DrGeo :) http://blog.drgeo.eu/post/2016/Fibonacci-spiral Hilaire -- Dr. Geo http://drgeo.eu

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Desktop unrefresh bug on 4.0
by Hilaire March 13, 2016

March 13, 2016

Hello, Under 4.0, the Pharo desktop suddenly get unrefreshed, so you can imagine the mess. See enclosed screenshot. Do any of you meet this problem? How to solve it? I did not find any related bug report. Thanks Hilaire -- Dr. Geo http://drgeo.eu

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Re RFC Minecraft Server
by Andy Burnett March 13, 2016

March 13, 2016

I think that is a really exciting idea. I would love to help. Are you thinking about a minecraft, or minecraft PE server? My kids play minecraft on their iPads and this isn't compatible with PC based minecraft. However, there is a nice minecraft PE server - written in PHP. Cheers Andy

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March 12, 2016

Hello, I'm a French student who have learned Pharo for 2 months during a university course. As this was the first time I use Pharo IDE and the first time I program in Pharo, my teacher suggested me to send a mail on the mailing list if I encounter problems. I encountered some problems/suggestions with using the IDE : - As I crashed the IDE several times, is there a way to automatically save the image every 5 minutes (or every other frequency) to avoid the loss of my work ? - I can't copy/paste from Google Chrome (on ubuntu 14.04) while I could copy/paste from other software like Gedit or Firefox. - Last problem that I have seen, is that I couldn't use Pharo on my windows 10 Computer. I have downloaded the last version (windows version) on pharo.org and when I try to execute it (without and with administrator mode), I have a pop-up who appear. I made a screenshot of this pop-up and put it in attachment to this mail. I hope that I have posted this mail in the good mailing list. Thanks for reading, Clement

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RFC Minecraft Server
by Ben Coman March 12, 2016

March 12, 2016

I'm not ready to do this yet, but just surveying interest. I'm thinking of creating a Minecraft server using Pharo. My kids are enthusiastic about playing Minecraft and I think its a great platform to grow their creativity and cognitive skills per [1]. Much better than passively watching TV! [1] http://minemum.com/minecraft-educational I'm particularly interested in using Minecraft modding as a platform to teach programming to my kids. I had high hopes for the Scratch-like interface of learntomod.com, but I found it awkward and unsuitable. Other options for writing mods include Java[2], Javascript [3] or Lua[4][5]. For now I'll probably settle on Lua, but I'd prefer to be teaching them with Phratch and later directly with Pharo. [2] https://blogs.oracle.com/arungupta/entry/introducing_kids_to_java_programmi… [3] http://scriptcraftjs.org/ [4] http://www.computercraft.info/wiki/Main_Page [5] https://book.cuberite.org/ Ignoring client-side modding that IIUC is only applicable to single player mode, mods are implemented on the server. Servers are written in several languages [6] and it would be nice to make one in Pharo, with Woden providing a basic 3D viewer as a management tool. Documentation available here [7] [6] http://minecraft.gamepedia.com/Custom_servers [7] http://wiki.vg/How_to_Write_a_Server cheers -ben P.S. Along the way I found several pointers at the following being competent info on optimising voxel engines... http://0fps.net/2015/01/23/collision-detection-part-3-benchmarks/ http://0fps.net/2012/01/14/an-analysis-of-minecraft-like-engines/ http://0fps.net/2012/06/30/meshing-in-a-minecraft-game/ http://0fps.net/2012/07/07/meshing-minecraft-part-2/

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