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

Share a taxi to go to ESUG 2015
by Serge Stinckwich July 8, 2015

July 8, 2015

Dear all, I will attend the ESUG 2015 conference and I'm looking for someone to share a taxi from Milan Linate airport to Brescia. I will arrive July 12th (AF 1212) at 8:50 and take a flight back July 17th (AF 1313) at 20:40. Website of the airport: http://www.milanolinate-airport.com/en Regards, -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

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brick/bloc examples missing FILOStack
by Peter UhnÃ¡k July 8, 2015

July 8, 2015

Hi, I wanted to try new brick/bloc thing https://pharoweekly.wordpress.com/2015/05/30/future-new-widget-sets-is-comi… however after loading (in Pharo 5.0) it is complaining about missing FILOStack (in BlBrickLayouter>>initialize) What should I load? Thanks, Peter

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Kivy
by Hilaire July 8, 2015

July 8, 2015

For the record, a friend told me about this https://en.wikipedia.org/wiki/Kivy Will it be cool to have something like that? Hilaire -- Dr. Geo http://drgeo.eu http://google.com/+DrgeoEu

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Re: [Pharo-users] Kivy
by H. Hirzel July 7, 2015

July 7, 2015

On 7/5/15, Alain Plantec via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > {no text body} In his thesis Dynamic Language Embedding With Homogeneous Tool Support http://scg.unibe.ch/archive/phd/renggli-phd.pdf Lukas Renggli p 2 mentions internal DSLs. <citation> Internal languages make a creative use of the host lan- guage. They integrate seamlessly into the host lan- guage and tools, but their syntax and semantics is strictly constrained. </citation> Speaking of GUI construction in Smalltalk for the Widget part you might consider that to be a library or API. For making use of the widgets you may think of an internal DSL. In addition the widgets as such might be rendered differently for different platforms (in Smalltalk in one of the GUI frameworks, an example was Squeak Morphic and MVC ) or outside (e.g. Kivy). @Hilaire, what do you think is outstanding of special about Kivy? I think to illustrate this it might be a nice experiment to develop a 'hello world' equivalent for GUI construction and have it rendered in as many user interface languages as possible (Kivy, various types of Morphic, Bloc etc., but as PPTX and ODP) The domain to be covered should be simple as to avoid making the exercise complex. Coming from a hello world type program means that at least a picture and some interaction (mouse click and keyboard) has to be added. A model which fulfills this and at the same time is useful as is for certain contexts: a sequence of slides (think 'simple Powerpoint slide show') with the follwoing slide types - one image and one caption - on text field only reaction to click event to advance to the next slide reaction to cursor left and cursor right to navigate through the slides and then rendering of the "GUI hello world program" in various languages https://en.wikipedia.org/wiki/User_interface_markup_language Another application domain for this is a picture book. --Hannes

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Situation - Raspberry PI and Pharo + Squeak
by itlists＠schrievkrom.de July 7, 2015

July 7, 2015

Hello, can anyone summarize the situation of Squeak/Pharo under Raspberry PI at the moment ? What platform/version is working, which vm should be used and it should be useable ... what is the difference of SPUR here etc .... Thanks, -- Marten Feldtmann

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I probably messed up with .changes...
by Matthieu Lacaton July 7, 2015

July 7, 2015

Hello, I would just like to report something that happened to me today. As I was working on a project, I tried inserting an instance variable to one of my classes. Starting from this moment something became very weird. First, some subclasses were not listed as subclasses anymore, then I realised during the execution that allocating my new instance variable was actually modifying another instance variable. I tried digging up a bit and I found out that many of my methods were a complete mess. When browsing with Nautilus the title of the method was for example: "addProperty:key:". However the corpse of the method was totally random with something like that for example: "ient; width: 1. graphic strokeStyle: _strokeStyle" So, reportedly, the name of the method was "ient;" ... Basically I had many methods where the source code was just random chunks of other methods. The funnier thing is that everything worked perfectly fine during execution. I tried to look at different backup images I had to see when everything began to go wrong and I realised I had been working with broken source code for about a week. So if I understand correctly, I probably messed up with the .changes file (I don't remembr how but maybe I copied the .image without the .changes or renamed the .image or i don't know). And now the compiled code is okay but the source code is lost so everything is working fine until the system tries to recompile everything ? Now my question is : is there a way to fix the issue ? I tried exporting the package to a .mcz but I had bugs everywhere. I imported the old working package to an .mcz and tried browsing the differences with the broken one just to manually get back eveything I changed during this week. But I couldn't cause there were bugs everytime I tried to browse the changes. Basically, are all my changes definitely lost or is there a way to get it back somehow (at least the raw source code) ? I know that I fucked up and this is my fault but it would have been nice if something (anything) told me earlier that I did something wrong. I've been adding / modifying lots of methods and even executing the program for a week now and absolutely nothing told me that something was wrong until I tried adding an instance variable. I am in a situation where I actually wrote and "saved" code and now it seems lost... that's frustrating :( Thanks, Matthieu

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Pharo sprint & Moose dojo this Friday
by Jean-Christophe Bach July 6, 2015

July 6, 2015

Hello Pharoers, We propose a Pharo sprint / Moose dojo this Friday, 10th July, starting at 10:00am. (Local Time Lille). It will be at the Inria Lille, Building B, third floor (RMoD offices). Remotely, you can join us on the official IRC channel #pharo on irc.freenode.net server. During the sprint, we will try to synchronize local and remote Pharo sprinters. As the building is not open to the public, please contact us before if you plan to come. JC

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customizing SystemWindow menu
by Usman Bhatti July 6, 2015

July 6, 2015

Hi, I wanted to customize system window menu and I could not find a relevant method to change the default pragma used for menu generation. So, I thought it will be nice to have this utility method on SystemWindow if possible: SystemWindow>>menuPragmaNamed: aPragmaName model: aModel menuBuilder := PragmaMenuBuilder pragmaKeyword: aPragmaName model: aModel May be there is some other, simpler way to achieve it that I missed? regards, usman

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Clearing objects from .changes
by Peter UhnÃ¡k July 6, 2015

July 6, 2015

Is it possible to remove all references to a class after it has been removed everywhere? For example I can delete all classes of package 'Roassal2-Builder-Grapher' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ pkg := RPackageOrganizer default packageNamed: 'Roassal2'. grapherTag := pkg classTags detect: [ :each | each name = #'Builder-Grapher' ]. grapherTag classes do: [ :each | removeClass value: each ]. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ However this leaves the .changes file intact, even after I do "Smalltalk cleanUp: true". The reason why I am doing this is to lower the size of .changes/.images files which are massive just after loading my project... so it takes a lot of space for testing... Thanks, Peter

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Athens and radial gradient
by Matthieu Lacaton July 5, 2015

July 5, 2015

Hello, I wanted to use Athens API to define a radial gradient and I saw that the class RadialGradientPaint only had one radius as instance variable and it seemed to me it was passed as the end radius while the start radius was set to 0. Does it mean that if I want to define a start radius different from 0 I need to call the backend directly ? Thanks, Matthieu

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