- Pharo-users - lists.pharo.org

About Box
by Bruce Peaslee April 17, 2016

April 17, 2016

Hi, This is my first week with Pharo. I have been moderately successful in learning how things go, but I cannot seem to create a HELP|ABOUT dialog. Pointing me in the right direction would be appreciated. Thanks. Bruce

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Any hope for Smalltalk on Raspberry Pi?
by ReliableRobots.com April 17, 2016

April 17, 2016

I have Squeak on a RPi but I don't know how to access any USB peripherals or how to make primitives to do so. I want to use RPi for controlling a microcontroller and processing webcam video for my robot. If I can't get that in Smalltalk can it be added or what language should I move to? I was referred to http://car.mines-douai.fr/category/software/pharos/ but I can't get it to work on RPi. A major focus of RPi is to teach electronics but without access to the peripherals, Smallltalk is not useful. But some access is available in Scratch which is built on top of Squeak so why can't I get access to that code directly instead of going through the Scratch changes file? Why can't I get Smalltalk goodies like I used to buy from Digitalk? With all the VM work, there must be a way to hook up C++ code like OpenCV to do real time video contours and other image recognition algorithms. Dolphin has a somewhat easy way to add primitives. If Squeak all in one contains package bundles only for Mac, why not include essentials for RPi?

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Load a project from GitHub with command line
by Thomas Heniart April 17, 2016

April 17, 2016

Hello, I tried this: ./pharo Pharo.image eval "Metacello new baseline: #YourTribes; repository: 'github://HappyPharoHackers/YourTribes; load: #(tests)' It seems to load everything but unfortunately when I open the image, I don't see my packages And when I evaluate the Metacello expression in the playground then it works. What is the problem ? Cheers, Thomas

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RBAddClassRefactoring ensuring existence
by Peter UhnÃ¡k April 17, 2016

April 17, 2016

Hi, is it possible to "ensure" that class exists with RBAddClassRefactoring? Right now RBAddClassRefactoring will throw up if the class already exists. I would like it to create the class if it doesn't exist and just do nothing if it already exists. Is it possible? (if not I will just work around it on my side). Thanks, Peter

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GTDebugger shortcuts usability
by Peter UhnÃ¡k April 17, 2016

April 17, 2016

Hi, I'm getting fed-up with GTDebugger shortcuts since they are completely random. Can we have them more meaningful and/or somehow visible? For now I ended up overriding the labels so I can at least see them... but doing this is also stupid, because I still have to look at them since I cannot remember random shortcuts. â 1. can we unify the shift vs ctrl+shift nonsense? (I'm using linux btw) 2. can we use the default shortcuts pattern where one of the letters is underlined? Peter

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Re: [Pharo-users] Constants and the Playground
by Thibault Raffaillac April 17, 2016

April 17, 2016

> What you could do is to generate class methods for each of the classvariable > in pseudo code > > OpenGL classVariables do: [:each | > OpenClass class compiled: each name, ' ^ ', each name classified: > accessing ] > > this way you can do > > OpenGL MyConstant in the playground Problem is I have class methods in the same class, so this would make them hard to browse. I thought about implementing name search in the class DNU, but constants would not benefit from syntax coloring/completion then. Can we import Pool Dictionaries in the Playground? Thibault

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List with Border
by Bruce Peaslee April 16, 2016

April 16, 2016

Hi, This code creates the list and fills it, but it does not show a border. initializeWidgets transactionList := ListModel new. transactionList items: #('one' 'two' 'three'). transactionList borderWidth: 2; borderColor: Color red.

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Merging refactoring changes
by Peter UhnÃ¡k April 16, 2016

April 16, 2016

Is it possible to merge changesets? For example when I am creating a new class and adding a new instance variable, I would like to see it as one change set, not two. Similarly if I am overriding a method twice, it would be good to see only what actually gets applied. For example ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ " Sandbox removeFromSystem. " (model := RBNamespace new) name: 'ChangeSet'. r1 := RBAddClassRefactoring model: model addClass: #Sandbox superclass: Object subclasses: #() category: #Sandbox. r1 primitiveExecute. r2 := RBAddInstanceVariableRefactoring model: model variable: 'attr' class: #Sandbox. r2 primitiveExecute. r3 := RBAddMethodRefactoring model: model addMethod: 'attr' toClass: #Sandbox inProtocols: 'accessing'. r3 transform. r4 := RBAddMethodRefactoring model: model addMethod: 'attr ^ attr' toClass: #Sandbox inProtocols: 'accessing'. r4 transform. (ChangesBrowser changes: model changes changes) open. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I will get four changes â But the second (top right) could be merged into the first one, and the third one (bottom left) is superfluous. So ideally I would like to have â Is it possible to merge it in such a way? Thanks, Peter

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RBRefactoring docs
by Peter UhnÃ¡k April 16, 2016

April 16, 2016

Hi, is there any documentation for RBRefactoring? Since there are not even class comments the only thing I found is judging from tests. Thanks, Peter

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Constants and the Playground
by Thibault Raffaillac April 15, 2016

April 15, 2016

Hi, My work on OpenGL ES is almost done, and I am now trying to play with it in the Playground. However, since constants are stored in a pool dictionary you have to create a class importing it to encapsulate your OpenGL calls, so cannot just write snippets in Playground. This is very annoying for prototyping, so is there a good common design pattern to be able to use constants there ? Cheers, Thibault

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