November 2021 - Pharo-users

[ANN] Launchpad v4.0.0 [v4.0.0] released!
by Buenos Aires Smalltalk Nov. 24, 2021

Nov. 24, 2021

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Pharo sprint at Prague
by stephane ducasse Nov. 23, 2021

Nov. 23, 2021

Hi happy smalltalkers We want to organise a Pharo sprint at Prague either friday 26 Nov or saturday 27 Nov Let us know if you want to join hacking and having fun. S.

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How to flatten traits
by Jupiter Jones Nov. 22, 2021

Nov. 22, 2021

Hi All, There used to be a method to #flattenDownTraits that I canât find the equivalent in Pharo 8. How do you go about flattening traits now? Thanks for any advice. Cheers, J

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UK Smalltalk User Group Meeting - Wednesday 24 November
by Giovanni Corriga Nov. 16, 2021

Nov. 16, 2021

This month, the UKSTUG will take a look at Objective-S ( http://objective.st/ ), an architecture-oriented programming language based on Smalltalk and Objective-C, by hosting his creator Marcel Weheir. As per Alan Kay, âCode seems large and complicated for what it doesâ. Objective-S addresses one source of this accidental complexity: using software architectural abstraction to directly expresses the much wider variety of architectural styles typical of modern software systems, compared to traditional programming languages that still follow the call/return architectural style of scientific programs from the early days of computing. Marcel Weheir ( https://twitter.com/mpweiher ) started his forays into dynamic object-oriented computing by implementing Objective-C on his Amiga 35 years ago and hasnât stopped since. Stops on the way have been at Apple, the BBC, Microsoft and various startups, as well as contributing to Squeak. He is currently a principal software engineer at Citymapper and PhD student at HPI, where he is trying to distill some of the lessons learned from over a quarter century of industry experience into Objective-S. This will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/UKSTUG/events/cbklbryccpbgc/ ) to receive the meeting details. Donât forget to bring your laptop and drinks!

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Access to old image / source
by Jupiter Jones Nov. 12, 2021

Nov. 12, 2021

I have an old image Iâd like to recover some code from. When I try to launch in Pharo 2 (from memory it was written in Pharo 2) I get this error: This interpreter (vers. 6505) cannot read image file (vers. 6502). It looks close :) How do I go about finding a VM that will open that image? Thanks in advance. Jupiter

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[ANN] Registration Reminder for Camp Smalltalk
by horrido.hobbies＠gmail.com Nov. 9, 2021

Nov. 9, 2021

Just a reminder to everyone that they should register their presentation at Camp Smalltalk byÂ **March 13**, 2022. Here's the registration link:Â <https://campsmalltalksupreme.wordpress.com/registration-for-presenters/>. Please spread the word. Thanks.

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One PhD and two internships offers on object-centric debugging at Inria Lille
by Steven Costiou Nov. 9, 2021

Nov. 9, 2021

Hello, Inria Lille is recruiting one phd student and two interns to work on object-centric debugging within the OCRE project (ANR). DESCRIPTION OF THE PROJECT Debugging is difficult and costly. Object-centric debugging is a young technique arguing that focusing the scope of debugging on specific objects considerably eases the tracking and the understanding of hard bugs in Object-Oriented Programs (OOP). But it lacks fundamental bricks to be applicable in practice. Therefore, it has never been empirically evaluated. The objectives of the OCRE project are to study the fundamental and practical limits that hinder the implementation, the evaluation, and the adoption of object-centric debugging. We propose to build the first generation of object-centric debuggers, in order to identify and evaluate its real benefits to OOP debugging. We argue that these debuggers have the potential to drastically lower the cost (time and effort) of tracking and understanding hard bugs in OOP. PHD TOPIC The goal of this PhD is to understand and to achieve the full potential of object-centric debugging by: - identifying the precise scenarios for object-centric debugging, - studying means to obtain objects to debug, - studying the implementation requirements for object-centric debuggers and to implement prototypes, - evaluate empirically object-centric debugging using these prototypes. The full detailed offer is available here: https://jobs.inria.fr/public/classic/fr/offres/2021-04101 INTERNSHIPS These two internships aim at helping the design and the implementation of an object-centric debugger, by unveiling knowledge without which object-centric debuggers cannot be built and evaluated, or cannot be used in practice. Internship 1 - Identifying and acquiring objects to debug The objective of this internship is to study the practical problems of acquiring objects to debug. The intern will characterize the scenarios in which developers need to identify objects to debug and explore these scenarios by implementing prototypes. Internship 2 - Evaluating object-centric debugging scenarios The objective of this internship is to identify and to evaluate the debugging scenarios that are the most likely to benefit from object-centric debugging. The intern will interrogate real developers about object-centric debugging scenarios, then implement prototypes and evaluate them empirically with developers to validate these scenarios. ADMINISTRATIVE DETAILS Location: Lille, France Phd: - starting date: preferably october 2022, but it can start before. - duration: 3 years (fully funded) - the candidate must hold a Master or an equivalent degree Internships: - starting date: anytime - duration: 4-6 months - the candidate must be studying for a Master degree or equivalent (1st or 2nd year, equivalent to M1 or M2 in France)

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GTPlayground or STPlayground
by mspgate＠gmail.com Nov. 8, 2021

Nov. 8, 2021

hello everybody! What are the difference between the GTPlayground(that I think is deprecated) and the STPlayground? for my live coding performance the GTPlayground looks better because it is more âstrippedâ down, but does it work fine as the STPlayground. also, if I would like to chance the appearance of the STPlayground, which would be the methods to get rid of everything in the window except the window itself and the title. thanks a lot for your help. d

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[ANN] Pharo Consortium New Academic Member: Ivan Franko National University of Lviv
by Marcus Denker Nov. 4, 2021

Nov. 4, 2021

The Pharo Consortium is very happy to announce that Ivan Franko National University of Lviv has joined the Consortium as an Academic Member, the platform of cooperation will be the Faculty of Applied Mathematics and Informatics. About - Faculty of Applied Mathematics and Informatics: https://ami.lnu.edu.ua/en/ - Pharo Consortium: http://consortium.pharo.org The goal of the Pharo Consortium is to allow companies and institutions to support the ongoing development and future of Pharo. Individuals can support Pharo via the Pharo Association: http://association.pharo.org/

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Strategies for (re)using HTTP client
by Esteban Maringolo Nov. 3, 2021

Nov. 3, 2021

Hi, I happened to me more than once that I have to create some REST service "client" in which I usually wrap an HTTP client inside (ZnClient in this case), and all the calls to the service, end up using the HTTP client, inside some mutex to serialize the execution. But I don't like that, in particular when some endpoints are better with streaming responses (large downloads) and I have to fiddle with the client and set it back to the settings before executing the request. So, long story short... is it always safer to instantiate a new ZnClient on a per request basis since no state is shared, but I guess it is also less effective if I'm performing several requests to the same server. What are the recommended approaches here? Esteban A. Maringolo

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