May 2014 - Pharo-users - lists.pharo.org

Block Recursion

by Bob Williams

I read that Blocks in Squeak and Pharo, since it was derived from Squeak did not implement true block closures and would not support block recursion. On one count the statement was correct, but not on the other. I tried: | a f | a := 0. f := [ Transcript show: a. (a < 5)ifTrue:[a := a + 1. f value ] ]. f value. a inspect. A Workspace DoIt did not work in Squeak, it failed complaning that the block was being evaluated. In Pharo, it works but with the annoying modal dialog asking to run since f was not assigned a value. If blocks are to be used recursively, a better way must be found to flag but not stop execution. This example points out that porting from Squeak to Pharo is fine, but the reverse might be questionable. bw

May 26, 2014

name selector

by Stephan Eggermont

Do I understand correctly that name is to be understood as inspectorName and so should never be implemented as subclass responsibility? Stephan

May 26, 2014

Re: [Pharo-users] 3D with Pharo and OpenGL ?

by darrinm

Thanks for the help. I'll try to get it working. I haven't found an example of instantiating a StateTracker or a StateTracker class. Where is the version of Roassal3D that works with the latest NBOpenGL? -- View this message in context: http://forum.world.st/3D-with-Pharo-and-OpenGL-tp4760029p4760400.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

May 26, 2014

Re: [Pharo-users] 3D with Pharo and OpenGL ?

by Jean Baptiste Arnaud

The main problem with openGL, is two group have been work in parallel. When we merge the demo work on my version of NBGLProgram. And we keep the version of Roassal3D, the demo do not work anymore, I expected as the code has been change, the small demo have been ported too. It is not working anymore sorry. I will spend time to fix that. If you want to put energy in it. your are welcome. Should not be hard If you know the C openGL The calls should be correct just the API and "how" it should be used have been change, NBProgram NBBuffer NBShader have been change so the demo code should be updated too... By example the on: method do not exist anymore now we need to instantiate and set the stateTracker. I do not have a real internet connection. I take a look when I have one. On 26 May 2014, at 02:21, darrinm <darrin(a)massena.com> wrote: > I am having trouble getting NBOpenGL to work. I started with the Pharo 3.0 > image from (http://pharo.org/download) and registered/configured NBOpenGL > from http://smalltalkhub.com/#!/~PharoExtras/NBOpenGL > (ConfigurationOfNBOpenGL-RonieSalgado.18.mcz). The instructions there are a > little confusing since they say: > > In Pharo 2.0, current configuration should be loaded: > (ConfigurationOfNBOpenGL project version: '3.0') load. > > But it seems meant for Pharo 3.0 and the latest configuration is version > 3.1. Anyway, after loading version 3.0 on my Mac I can run the > GLTTRenderingDemo (yay!). Wanting more I load > NBOpenGL-Extra-jeanbaptistearnaud.3.mcz but the NBOpenGL-Extra Demos don't > work for me. > > For example, GLDemo01EmptyWindow opens a red window with a trace indicating > that NBMSAAOffscreenDisplay(Object)>>doesNotUnderstand: #makeCurrent. If I > comment out the render method's "(Smalltalk platform isMacOSX)" test then it > works and displays a colored window. > > Moving on to GLDemo02RedTriangle I get "MessageNotUnderstood: receiver of > "on:" is nil" from the render method statement "program := NBGLProgram on: > display gl.". > > NBGLProgram doesn't seem to exist in NBOpenGL version 3.0 so I load version > 3.1. NBGLProgram exists there but now GLTTRenderingDemo doesn't work any > more ("MessageNotUnderstood: AnObsoleteNBGLFragmentProgram class>>on:") nor > does the new GLTutorial1 ("Error during FFI call: nil" from > shaderSource_shader:count:string:length:). > > GLDemo01EmptyWindow (with isMacOSX test commented out) still works but > GLDemo02RedTriangle fails with MessageNotUnderstood: NBGLProgram class>>on: > > Advice? Thanks. > > > > > -- > View this message in context: http://forum.world.st/3D-with-Pharo-and-OpenGL-tp4760029p4760343.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > Best Regards Jean Baptiste Arnaud jbaptiste.arnaud(a)gmail.com

May 26, 2014

Re: [Pharo-users] Calling an arbitrary method

by Sean P. DeNigris

camille teruel wrote > "instance perform: filterMethod asSymbol" "instance perform: filterMessage asSymbol" ;) ----- Cheers, Sean -- View this message in context: http://forum.world.st/Calling-an-arbitrary-method-tp4760058p4760380.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

May 26, 2014

Two suggestions for the new pharo website

by kmo

I think the new pharo website could be improved by the addition of two new pages. Firstly, the site badly needs a "Success Stories" page. The old web site had one of these so presumably that can be added easily. You have to show newcomers that pharo can be used for something real. Look at the/ meteor/ website https://www.meteor.com/main. Meteor isn't even at version 1.0 yet but already boasts a impressive gallery of applications. Secondly, a list of all the packages in the Configuration Browser with a proper description of what they do would be helpful. It would give newcomers the idea that pharo is a comprehensive solution to their development needs. it also would provide newcomers with some kind of guide to the pharo ecosystem - how is anybody supposed to know what Aconacqua or Chalten is meant to do? Pharo has quite an impressive list of add-ons in the configuration browser but what's the point if no one knows what they do? -- View this message in context: http://forum.world.st/Two-suggestions-for-the-new-pharo-website-tp4760379.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

May 26, 2014

Re: [Pharo-users] How does one use MultiColumnListModel?

by Sergi Reyner

2014-05-26 1:35 GMT+01:00 Johan Fabry <jfabry(a)dcc.uchile.cl>: > Hi Sergi, > > what I do is pass it whatever I want, but set the displayblock. This block > then returns a n-element collection, one element for each column. For > example, in a two column list I return a collection with 2 elements > Thanks!!! Thanks!!! Thanks!!! :D

May 26, 2014

Re: [Pharo-users] How does one use MultiColumnListModel?

by Johan Fabry

Hi Sergi, what I do is pass it whatever I want, but set the displayblock. This block then returns a n-element collection, one element for each column. For example, in a two column list I return a collection with 2 elements. Greetings, On May 25, 2014, at 8:24 PM, Sergi Reyner <sergi.reyner(a)gmail.com> wrote: > Hi, > > IÂ´ve been spending some time trying to figure out what to pass, and I canÂ´t figure out what to pass to #items:. IÂ´ve tried to pass strings, arrays of strings, arrays of arrays of strings, and the most IÂ´ve got so far is Character(Object)>>doesNotUnderstand: #widthToDisplayInList: :S > > Some help or some pointers would be greatly appreciated! > > Cheers, > Sergi ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

May 26, 2014

How does one use MultiColumnListModel?

by Sergi Reyner

Hi, IÂ´ve been spending some time trying to figure out what to pass, and I canÂ´t figure out what to pass to #items:. IÂ´ve tried to pass strings, arrays of strings, arrays of arrays of strings, and the most IÂ´ve got so far is Character(Object)>>doesNotUnderstand: #widthToDisplayInList: :S Some help or some pointers would be greatly appreciated! Cheers, Sergi

May 26, 2014

Re: [Pharo-users] 3D with Pharo and OpenGL ?

by darrinm

I am having trouble getting NBOpenGL to work. I started with the Pharo 3.0 image from (http://pharo.org/download) and registered/configured NBOpenGL from http://smalltalkhub.com/#!/~PharoExtras/NBOpenGL (ConfigurationOfNBOpenGL-RonieSalgado.18.mcz). The instructions there are a little confusing since they say: In Pharo 2.0, current configuration should be loaded: (ConfigurationOfNBOpenGL project version: '3.0') load. But it seems meant for Pharo 3.0 and the latest configuration is version 3.1. Anyway, after loading version 3.0 on my Mac I can run the GLTTRenderingDemo (yay!). Wanting more I load NBOpenGL-Extra-jeanbaptistearnaud.3.mcz but the NBOpenGL-Extra Demos don't work for me. For example, GLDemo01EmptyWindow opens a red window with a trace indicating that NBMSAAOffscreenDisplay(Object)>>doesNotUnderstand: #makeCurrent. If I comment out the render method's "(Smalltalk platform isMacOSX)" test then it works and displays a colored window. Moving on to GLDemo02RedTriangle I get "MessageNotUnderstood: receiver of "on:" is nil" from the render method statement "program := NBGLProgram on: display gl.". NBGLProgram doesn't seem to exist in NBOpenGL version 3.0 so I load version 3.1. NBGLProgram exists there but now GLTTRenderingDemo doesn't work any more ("MessageNotUnderstood: AnObsoleteNBGLFragmentProgram class>>on:") nor does the new GLTutorial1 ("Error during FFI call: nil" from shaderSource_shader:count:string:length:). GLDemo01EmptyWindow (with isMacOSX test commented out) still works but GLDemo02RedTriangle fails with MessageNotUnderstood: NBGLProgram class>>on: Advice? Thanks. -- View this message in context: http://forum.world.st/3D-with-Pharo-and-OpenGL-tp4760029p4760343.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

May 26, 2014