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

Understanding Slang for building a compiler to C++
by Dimitris Chloupis March 4, 2016

March 4, 2016

Hey pharo experts I am interesting into studying how Slang works for making a compiler that takes pharo code and turns it to C++ code, my questions is where to find Slang , how to extract the code that compiles Slang to C and study it as an example for making my own compiler for C++.

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CDB project
by Nicolas Berveglieri March 4, 2016

March 4, 2016

Hello, we're a group of 4 students learning pharo since a few weeks. We picked up the CDB project (http://cr.yp.to/cdb.html) to hopefully get it done by march. If you have any specific request about the project let us now. Oudjail Veis Gamelin Kevin Maroine Maxime Berveglieri Nicolas

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Who is using Pharo Launcher and for what
by Damien Cassou March 4, 2016

March 4, 2016

For my CV, I need to know who is using the stuff I'm doing. If you use the Pharo Launcher, could you please tell me in which context (e.g., which company, open-source project) and what you use it for (e.g., download from CI, standard Pharo)? I don't need long paragraphs, just give me the keywords please. Thanks -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." --Winston Churchill

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CollectionValueHolder ValueAdded ValueRemoved
by Peter UhnÃ¡k March 3, 2016

March 3, 2016

This is something that was discussed some time ago but never resolved. To summarize: When working with CollectionValueHolder one can only see whether the collection as a whole changed and not how, e.g. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ col := OrderedCollection new asValueHolder. col add: 1. col add: 2. col add: 3. col add: 4. col whenChangedDo: [ :c :changedValue | 1halt. ]. "col = #(1 2 3 4)" col add: 4. "whenChangedDo: c = col, changedValue = 4" col remove: 4. "whenChangedDo: c = col, changedValue = 4" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In the last two cases the changedValue is the same so I can't tell from the block if the value was added or removed. My proposition: * introduce (at least) two more Announcements: ValueAdded and ValueRemoved * add messages #whenAddedDo:/#whenChangedDo: * maybe add #when:do: so it can be used as an announcable object (valueHolder when: ValueSomething do: [ :ann | ... ]) The ValueAdded/ValueRemoved would be fired when an item is added, resp. removed. Thierry also proposed to add an index (I'd make it optional). ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ col whenAddedDo: [ :col :addedValue :optionalIndex | "here we know for sure that value was added" ]. col whenRemovedDo: [ :col :addedValue :optionalIndex | "here we know for sure that value was removed" ] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Finally Thierry mentioned a way to handle situations where values are replaced (either single one or multiple ones). As this is edge use-case and the current behavior is pretty much random I wouldn't address the replacement unless a defined use case emerges. Any thoughts, Peter

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Is there a way to display Spec widgets in a ListModel?
by Julien Delplanque March 3, 2016

March 3, 2016

Hi everyone, I can't find how to display Spec widgets in a ListModel, is it possible? I would like to have a list model holding, at each row, a TextModel and a ButtonModel. Thanks in advance, Julien

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Celebrating the upcoming Open Data Day (March 5) with Pharo
by Offray Vladimir Luna CÃ¡rdenas March 2, 2016

March 2, 2016

Hi all, I just want to share a post made on the Open Knowledge Foundation Forum talking about what we're doing in our local community to celebrate the Open Data Day: https://discuss.okfn.org/t/our-poryect-and-hackathon-workshop-for-the-open-… Pharo, Roassal and Moose will be an integral part of our celebration. As I said in the link, we're going to try some treemapping techniques. I know about Quick Silver, but if any has some other advice, is very welcomed. Probably I will be making some questions here and in the chat channel regarding treemapping and some SQLite queries to get the proper info, so I'll keep you posted on how our pharo powered workshop/hackathon for the celebration of the Open Data Day advances. Cheers, Offray

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Garage and VoyageMongo Pharo5 versions for the MOOC
by Luc Fabresse March 2, 2016

March 2, 2016

Hi Guys, I am trying to prepare a ConfigurationOfPharoWeb for the MOOC on Pharo5. So I would be really greatful to have some help ;-) - Garage does not seem to load properly in Pharo 5. - VoyageMongo does not have a Pharo5 version nor a ConfigOf in the MetaRepoForPharo5 Thanks #Luc

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[Issue tracker] Please check old issues to prepare for release!
by Marcus Denker March 2, 2016

March 2, 2016

Hello, As you might now, we are in the process of getting Pharo5 stable for a release. One of the things that is always important is to clean the issue tracker: over the year that the new release in in development, lots of issue accumulate. Please, just for the issue you have either opened yourself or where you have been involved in the discussion: -> Is the issue still relevant? Maybe it has been fixed? -> Is it really important to stay open? Sometimes things are just not worth itâ¦ -> Is this really an issue tracker entry? What I mean here is that an issue tracker is not a wish-list. There are so many things I want, but adding an issue is often not helping. âIt would be nice ifââ¦ -> Bugs: Can it be reproduced? How? -> Features: We are in freeze. Likely it should be moved to the âPharo 6â Milestone. We are at 521 open issue as of now, I am sure we can get that number down till we release. At some point (soon) we will make a real âshow stopperâ list for the issue that we have to fix before we can release. Marcus

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What are immediate subclass and word variable subclass?
by Alexandre Bergel March 2, 2016

March 2, 2016

Hi! I have stumbled on: Float immediateSubclass: #SmallFloat64 instanceVariableNames: '' classVariableNames: '' package: 'Kernel-Numbersâ Float variableWordSubclass: #BoxedFloat64 instanceVariableNames: '' classVariableNames: '' package: 'Kernel-Numbersâ What are immediate subclass and word variable? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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CMD/CTRL-B for browsing?
by Luc Fabresse March 2, 2016

March 2, 2016

Hi Guys, In Pharo 5, it seems that CMD/CTRL-B does not work for browsing in some places such as in GTDebugger right bottom pane. Is this on purpose? #Luc

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