- Pharo-users - lists.pharo.org

BS Web and Pharo
by Tim Mackinnon Aug. 7, 2018

Aug. 7, 2018

Hey guys - when reading about the BS web (great article btw - https://pxlnv.com/blog/bullshit-web/ ) it reminded me about the constant pestering to sign up for the Pharo newsletter. Given I am signed up - how can I stop it always popping up? Itâs in the list of the BS web... so do we really need it to do this? At least it should be a cookie that if I have it it goes away, or better still - just put it as a menu entry and let people sign up if they like out stuff? Given our community fights the BS can't we lead better? Tim Sent from my iPhone

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Pharo Launcher & Stored Settings
by Evan Donahue Aug. 7, 2018

Aug. 7, 2018

Is there a way to handle settings that should be different for every image when using Pharo Launcher? In particular, Settings > Software Configuraiton > Monticello > Default Local Repository & Local Cache Directory should be specific to the new image, but if I ever store settings for any reason, they get saved and incorrectly propagate to fresh images. Also, they are initialized wrong in the first place. How can I avoid this issue without manually adjusting these paths every time I make a new image? Thanks, Evan

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Morph reacting to Window being closed
by Peter UhnÃ¡k Aug. 7, 2018

Aug. 7, 2018

Hi, how can a Morph react to its parent window being closed? E.g. Morph subclass: #MyMorph. MyMorph new openInWindow how can MyMorph cleanup itself on window close? I thought Morph>>delete would do the trick, but it is not being called. Thanks, Peter

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Cargo & Future Proofing Releases
by Evan Donahue Aug. 7, 2018

Aug. 7, 2018

Hi, I will have a few general interest packages to release in the near future, for performance testing, contracts, and the like, and I'm wondering what the current story is for package release. I've heard some things about an upcoming "Cargo" package manager, so I'm wondering what the timeline on that is and whether I should be doing anything in anticipation of that, whether I should be putting things on the old Catalog, and just generally what the standard story is right now for releasing packages. Thanks, Evan

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Re: [Pharo-users] transactions on pharo objects
by Carlo Aug. 6, 2018

Aug. 6, 2018

Hi This research from VPRI may be useful: Worlds: Controlling the Scope of Side Effects <http://www.vpri.org/pdf/tr2011001_final_worlds.pdf> and Experiments with Worlds <http://www.vpri.org/pdf/m2013002_experiments.pdf> (Alessandro Warth, Yoshiki Ohshima, Ted Kaehler, and Alan Kay) They had a JS and Squeak version running which can be found at http://www.tinlizzie.org/~awarth/worlds/ <http://www.tinlizzie.org/~awarth/worlds/> Regards Carlo On 30 Jul 2018, at 15:16, Peter UhnÃ¡k <i.uhnak(a)gmail.com <mailto:i.uhnak@gmail.com>> wrote: Hi, is there some library or approach how to do transactions in pharo? And I don't mean database transactions, but directly in memory on Pharo objects... e.g. p := Person new. transaction do: [ p name: 'Nobody'. p age: 70. ] on: Error do: [ transaction rollback. ]. self assert: p name equals: 'Nobody'. self assert: p age equals: 70. transaction do: [ p name: 'Somebody'. p age: 1 / 0. ] on: Error do: [ transaction rollback. ]. self assert: p name equals: 'Nobody'. self assert: p age equals: 70. Any pointers appreciated. Thanks, Peter

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Pillar Book Tester
by Quentin DUCASSE (CI_2020) Aug. 5, 2018

Aug. 5, 2018

Hello everyone! I am currently in an internship within the RMoD team and would like to present my work. My internship subject was the following: âHow to test documents (books, slides) written in Pillar?â. Let me first introduce Pillar then what I managed to implement and what is left to do. -What is Pillar? Pillar is a markup syntax and associated tools to write and generate documentation, books, slide-based presentations or websites. Pillar syntax is similar to Markdownâs one but its emphasis is stressed on publishing to different formats/languages (Markdown, html, LateX, pdf). -What does it mean to âtest a bookâ? -- Display code within the book Pillar syntax allows you to write codeblocks, showing a part of code. The inside of a codeblock allows one to display any part of code you might want to. For example: [[[ YourClass >> yourMethod ^ âblaâ ]]] This codeblock presents a method definition, the other two possible codeblocks are the following: Class definition [[[ Object subclass: #YourClass instanceVariableNames: '' classVariableNames: '' package: YourPackage' ]]] Example [[[ 1+1 >>> 2 ]]] -- How to test it? The use of â>>>â and parameters in the codeblock will help us to test the code within it. The BookTester will turn examples into tests. Testing examples: [[[testcase=true 3+4 becomes self assert: (3+4) equals: 7 >>>7 ]]] Testing methodDefinitions and classDefinitions: Testing method or class definitions resumes is the same as testing if the compilation of the method does not raise any error. It can help make sure your book is up to date with the latest Pharo version. Those tests are done the same way as testing an example: stating methodDefinition=true or classDefinition=true as code block parameters will make them elible for tests. Now, we are adding more features to code block or Pillar to help book writers. -Additional Features In Pillar, several annotations can be used for different purposes like including columns/tables/citations/figures/linksâ¦ -- Loading code: loader ${loader:account=QDucasse|project=TestBook|tag=Chapter1}$ allows you to load the github project as it was in the commit tagged Chapter1. This will help you test every chapter of your code with its current progression and also allow you to test the objects you are defining in your book. - Executing Tests: run ${run:testClass=YourClassTest}$ runs the test defined in the class testClass. And of course this testClass can be Other annotations have been added to help you write your book: - Display a class definition: showClass: ${showClass:className=YourClass}$ displays a codeblock with the class definition within it This helps you quickly include a class definition you want to display in your book. Combined with the loader it means that the code can be the source of your book. - Display a method definition: showMethod: ${showMethod:className=YourClass|methodName=yourMethod}$ will display a codeblock with the method definition within it This helps you quickly include a method definition you want to display in your book. - Screenshot: ${showMethod:packageName=yourPackage|className=YourClass|methodName=yourMethod|caption|width|label}$ saves a screenshot of a Calypso browser open at the selected package, class and method and includes it in both your book (using the designated Pillar figure reference) and the figures subfolder in the pillar book folder (saved as PNG). -Future objectives One of the future improvements would be to make everyone able to write examples and test them in the comments of method definitions. It is already partially possible â3+4 >>> 7â will be highlighted differently and if printed will display â7->7â. However, an automation or UI improvement would be nice. I hope this gave you the will to write something you had in mind. Are there any books you want to try the tools on? Feel free to ask ! Quentin Ducasse

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Volunteer for proof reading English text
by Hilaire Aug. 5, 2018

Aug. 5, 2018

Hi, Since a few weeks I am writing English texts about the Dynabook. The idea is to share opinion on the topic, and see if there are interests, opinions, comments., etc. As for now I am looking at how it relates with pedagogy. Later I hope to think more on its technical dimension. However I am looking for a supplementary native English speaking native to help proof reading it. Each text is not very long, so it is not a lot of work. If you are willing to help, please email me at hilaire [at] drgeo.eu (I can't read email address from the list message as I am reading it through the gmane newsgroup and email address are encoded). Thanks Hilaire -- Dr. Geo http://drgeo.eu

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safely determining whether ProcessWrapper process is running
by Peter UhnÃ¡k Aug. 3, 2018

Aug. 3, 2018

Hi, I feel like I am missing something obvious, but is there a _safe_ way to test if PW is still running? If the process pointer for whatever reason is no longer valid (e.g. the image crashed / I closed image), then #isRunning results in crashing the image. Maybe this is a bug? Thanks, Peter

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transactions on pharo objects
by Peter UhnÃ¡k Aug. 2, 2018

Aug. 2, 2018

Hi, is there some library or approach how to do transactions in pharo? And I don't mean database transactions, but directly in memory on Pharo objects... e.g. p := Person new. transaction do: [ p name: 'Nobody'. p age: 70. ] on: Error do: [ transaction rollback. ]. self assert: p name equals: 'Nobody'. self assert: p age equals: 70. transaction do: [ p name: 'Somebody'. p age: 1 / 0. ] on: Error do: [ transaction rollback. ]. self assert: p name equals: 'Nobody'. self assert: p age equals: 70. Any pointers appreciated. Thanks, Peter

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Monticello default repositories & Iceberg
by Evan Donahue Aug. 1, 2018

Aug. 1, 2018

I am using Pharo Launcher. Currently, if I create a new image and go to Settings > Software Configuration > Monticello, I see a "default local repository" and a "local cache directory" that point to old obsolete paths from years ago on my machine. As a result, I'm having trouble using iceberg through metacello, because it keeps looking for baselines in these old paths and crashing. What should those paths be for Pharo launcher? Does it use one default path for all images, or is there a way to tell it to change the default cache for each new image? Thanks, Evan

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