October 2012 - Pharo-users - lists.pharo.org

Hellp + PostgreSQL Connector
by roberto.minelli＠usi.ch Oct. 18, 2012

Oct. 18, 2012

Hello, I am Roberto Minelli, a PhD student in the REVEAL research group at the Faculty of Informatics of the University of Lugano. I am exploring Smalltalk, and Pharo, for the first time and I am open to suggestions and tips & trick. Shortly I would like to work on something concrete to get in touch with Smalltalk. One of the things I am interested in, is retrieving entries from an existing PostgreSQL database. To this aim it would be great if some to you could point me in the right direction. ;) I also heard that there are some very cool "extensions" to the Pharo IDE (i.e., code completion, code browsing, etc). I would be glad if some of you could help me discovering all these cool features of Pharo! Thanks in advance, Roberto M.

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OrderedCollection detect: <- exception if not found?
by sergio_101 Oct. 16, 2012

Oct. 16, 2012

i had a problem earlier, thinking that if i did a detect: on an ordered collection, and the item was not found, i would get back nil. it turns out that it throws an error.. to get this to work, you use: detect:ifNone: my only question is... why is this so? what is the motivation behind throwing an error rather than returning nil? i guess i would like to understand the 'smalltalkiness' about this, just in case i run into something like this in the future.. thanks! -- ---- peace, sergio photographer, journalist, visionary http://www.ThoseOptimizeGuys.com http://www.CodingForHire.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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Pharo sound capabilites. What options?
by Volkert Barr Oct. 16, 2012

Oct. 16, 2012

Dear all, I am want to write in game in pharo 1.4, but need sound capabilities (playing mp3/ogg or midi, ..). what are my options here? BW, Volkert

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adding multiple items to OrderedCollection remove:
by sergio_101 Oct. 16, 2012

Oct. 16, 2012

suppose i have: and ordered collection with: objectA, objectB, objectC i want to remove objects and be.. what would be the best shorthand way to do this with one expression, rather than... orderedCollection remove: objectA orderedCollection remove: objectB thanks! -- ---- peace, sergio photographer, journalist, visionary http://www.ThoseOptimizeGuys.com http://www.CodingForHire.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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SUnit - works in its own space?
by sergio_101 Oct. 16, 2012

Oct. 16, 2012

a quick question on SUnit.. do tests run in their own space? say i have a model like User.. User has a class variable that is an ordered collection of of users.. User userList <- should give me and ordered collection.. in my tests, if i add users to User userList.. then, in a workspace, i inspect: User userList later, i see that my tests users have in fact been added to the ordered collection.. is this expected? thanks! -- ---- peace, sergio photographer, journalist, visionary http://www.ThoseOptimizeGuys.com http://www.CodingForHire.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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fOSSa: Pharo Workshop. Call for Speakers
by Marcus Denker Oct. 16, 2012

Oct. 16, 2012

Hi, There will be a small Pharo workshop at the fOSSa Open Source conference this year: http://fossa.inria.fr/en 4-5-6 December, Lille, at Euratechnologies We plan to have a small workshop with one part short presentations, plus the rest hands-on (and maybe a small sprint for fixing bugs). ==> You are very welcome to attend (there will be another call) ==> We need talks... so if someone wants to come for a short presentation, please contact me. Marcus -- Marcus Denker -- http://marcusdenker.de

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subscribe on system change
by Miguel Enrique Campusano Araya Oct. 16, 2012

Oct. 16, 2012

I want to do some logic when there is a change on the system, like when a new class is loaded or when a method change. I don't want to put this logic explicit on the methods of the system who do that. I would like to know if i could subscribe to those special events (method change, new method, changes on a class and so on) so I can do what I want outside those methods. I heard about the Announcements but I don't know if Announcements could help with this problem. Can anyone give me some highlights to do those things? Thanks! (I'm really trying with my english, hope it's understandable) -- Miguel Enrique Campusano Araya Estudiante de IngenierÃa Civil en ComputaciÃ³n Universidad de Chile

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about Metacello package loading order
by Usman Bhatti Oct. 15, 2012

Oct. 15, 2012

I have a configuration as follows : spec for: #common do: [ "a class in package BBB inherits from a class in package AAA" spec package: 'AAA'; package: 'BBB' with: [spec requires: 'AAA'] ]. Now, when I try to load this configuration, it fails to properly load the package BBB (there are some missing classes) with this msg: *This package depends on the following classes:* * A class in package AAA* *You must resolve these dependencies before you will be able to load these definitions: A class in package BBB.* It seems that there is a way to load packages in a linear order ( http://code.google.com/p/metacello/wiki/FAQ#Controlling_Package_Initializat…) However, my project defaults is already set to linear and after reading this post my problem is not resolved. Can anyone help me how I can enforce package AAA to load before BBB? tx, usman

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Stepping through diameter of CircleMorph
by irfankhan1 Oct. 12, 2012

Oct. 12, 2012

Hi i have a new sub class for CircleMorph which has step method. step self extent: self extent +1. (self extent )>(300@300) ifTrue: [self stopStepping] This changes center of circle when i start stepping,Is there a way i can do this without changing center for CircleMorph. -- View this message in context: http://forum.world.st/Stepping-through-diameter-of-CircleMorph-tp4650815.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Oct. 12, 2012

Please distribute widely :) From: LE PORS Eric <eric.lepors(a)fr.thalesgroup.com> Subject: Sujet stage Pharo Date: October 11, 2012 10:01:27 AM GMT+02:00 To: StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> Cc: Pierre LABORDE <pierre.laborde(a)fr.thalesgroup.com> A diffuser aux Ã©tudiants motivÃ©s : (Sujet de Stage THALES SYSTEMES AEROPORTES BREST, non diffusÃ© officiellement) Titre : Maquettage Innovant avec Pharo (Logiciel). DurÃ©e : 6 mois, dÃ©but en fÃ©vrier ou mars (stage de fin d'Ã©tude) Description (Contexte technique, objectifs et dÃ©finition prÃ©cise du travail) : Notre entitÃ© dÃ©veloppe rÃ©guliÃ¨rement des maquettes dâinterfaces homme-machine innovantes. Lâinnovation se situe autant au niveau de lâergonomie quâau niveau du design graphique visuel ou des Ã©lÃ©ments dâinteraction. Le maquettage est souvent utilisÃ© en sÃ©ance avec les opÃ©rationnels, dâoÃ¹ lâemploi dâun langage dynamique comme Smalltalk permettant la modification rapide (et en sÃ©ance) du code et des Ã©lÃ©ments dâinteraction. Le maquettage/prototypage des interfaces Homme-Machine est donc actuellement rÃ©alisÃ© sous SMOCK, un framework de maquettage dÃ©veloppÃ© en Smalltalk Visualworks (Commercial). De nombreux Smalltalk existent sur le marchÃ©, cependant une communautÃ© parmi les autres semble de plus en plus active et moderne, Ã la fois en terme de langage et dâaspects interfaces homme machine : la communautÃ© Smalltalk Pharo (OpenSource). Nous souhaitons expÃ©rimenter les apports de Pharo en terme dâinterfaces homme-machine innovantes. Pour ce faire nous proposons au candidat dâeffectuer un portage de notre framework de maquettage composÃ© de SCM (modÃ¨le en composant) et de CADE (Framework orientÃ© dessin et animations). Un exemple dâihm utilisant les Ã©lÃ©ments portÃ©s validera le travail effectuÃ©. CONNAISSANCES SOUHAITEES : Le stagiaire devra avoir une connaissance du Smalltalk ou Ãªtre motivÃ© par lâapprentissage de celui-ci. Il devra ensuite Ãªtre motivÃ© par la conception dâinterface homme machine de nouvelles gÃ©nÃ©rations et novatrices.

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