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Re: [Pharo-users] What is the craziest bug you ever face

by Igor Stasenko

I don't think my reply will be anything useful, but as to me the most craziest bug is metabug, i.e. when system doesn't provides any means to debug things. :) As for regular bugs .. it is quite hard to remember anything i wasn't able to deal with, given enough time & effort, and then emphasize single case over the rest. And since human brains tend to forget unpleasant things, there's not much details to tell and remember. On 9 March 2017 at 13:36, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > Hi guys > > During the DSU workshop we were brainstorming about what are the most > difficult bugs we faced and what are the conceptual tools that would have > helped you. > > Stef > -- Best regards, Igor Stasenko.

March 9, 2017

Re: [Pharo-users] [Pharo-dev] Archive Page for Pharo TechTalks

by stepharong

excellent!!!! On Thu, 09 Mar 2017 11:02:59 +0100, Marcus Denker <marcus.denker(a)inria.fr> wrote: > Hi, I added http://pharo.org/TechTalk This is linked from > http://pharo.org/community The idea is to keep a log of all past tech > talks with links to the archival recording (if there is one). >Marcus -- Using Opera's mail client: http://www.opera.com/mail/

March 9, 2017

Re: [Pharo-users] Moving from Slack to Discord

by Sean P. DeNigris

kilon.alios wrote > https://discord.gg/F6nAd That link does not work. The new one is http://discord.gg/Sj2rhxn ----- Cheers, Sean -- View this message in context: http://forum.world.st/Moving-from-Slack-to-Discord-tp4914751p4938020.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 9, 2017

Re: [Pharo-users] [Pharo-dev] What is the craziest bug you ever face

by Max Leske

Fixing a race condition in handling open sockets when forking an image. At first I had no clue where the problem could come from, then I spent a lot of time guessing at the conditions (of course, being a race condition there was no means to force the specific condition but I didn't know that yet). Over all I spent about 6 weeks on this bug and finally fixed it by creating a new primitive to handle that specific case. I'm not sure what tools could have helped me as this was a rather specific problem (OSProcess). But the hardest problems in my experience are usually concurrency / asynchrony (e.g. race conditions) or bugs in libraries (where you always assume that you must have made a mistake, never the library). Max > On 9 Mar 2017, at 12:36, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > > Hi guys > > During the DSU workshop we were brainstorming about what are the most difficult bugs we faced and what are the conceptual tools that would have helped you. > > Stef

March 9, 2017

Re: [Pharo-users] Voyage and Date

by Hilaire

March 9, 2017

Test for Voyage failure to materialize in some situation

by Hilaire

Hi , Here is a test case to expose the materialization problem I discussed previously[1]. Hopefully the test will help to track the problem. Note: With memory repository it is of course fine, so MongoDB resource is needed for the test. Hilaire http://forum.world.st/Voyage-and-instances-retrieving-tt4936868.html -- Dr. Geo http://drgeo.eu

March 9, 2017

<Programming> 2017: Call for participation

by Tim Molderez

----------------------------------------------------------------------- <Programming> 2017 : The Art, Science, and Engineering of Programming April 3-6, 2017, Brussels, Belgium http://2017.programming-conference.org ----------------------------------------------------------------------- We are excited to welcome you to <Programming> 2017, a new conference focused on everything to do with programming. It takes place at the Vrije Universiteit Brussel, Belgium on April 3-6. The <Programming> conference is closely associated with the open-access journal "The Art, Science, and Engineering of Programming".Â The journal's first two issues form the conference's research track, which means you can freely access all papers presented at the conference before it even starts! Along with the research track, <Programming> 2017 features a program with two main keynotes, two symposia, eight workshops, a coding dojo, a demo track, and a student research competition. To catch a glimpse of what <Programming> 2017 has to offer, feel free to have a look at our overview video: https://www.youtube.com/watch?v=GM_hLNW4ioE *********************************************************************** Program highlights *********************************************************************** Main conference: - Keynote: "Live Literate Programming" by Gilad Bracha - Keynote: "How Racket Went Meta" by Matthew Flatt - Research track: 18 full papers - Demonstrations: 10 tool demos - ACM Student Research Competition: 8 entries Co-located events: - 10th European Lisp Symposium: 2 keynotes by Hans HÃ¼bner and Bohdan Khomtchouk, ~18 papers (not final yet) - Modularity 2017: 8 invited talks by JÃ¶rg Kienzle, Shmuel Katz, Mira Mezini, Bedir Tekinerdogan, StÃ©phane Ducasse, Uwe AÃmann, Lodewijk Bergmans and Mario SÃ¼dholt - CoCoDo - RainCode Labs Compiler Coding Dojo: code together with experts Adrian Johnstone, Elizabeth Scott, Robby Findler, and more to come! - LASSY - Workshop on Live Adaptation of Software SYstems - MiniPLoP - Mini Pattern Languages of Programs writers' workshop - MOMO - Workshop on Modularity in Modeling - MoreVMs - Workshop on Modern Language Runtimes, Ecosystems, and VMs - PASS - Workshop on Programming Across the System Stack - PX - Workshop on Programming Experience - ProWeb - Programming Technology for the Future Web - Salon des RefusÃ©s workshop Social events: - Beer reception at the conference venue (April 3rd) - Reception at the Musical Instruments Museum (April 4th) - Banquet at the Natural Sciences Museum (April 5th) *********************************************************************** Registration, attendance and accommodation *********************************************************************** - You can register for <Programming> 2017 at: http://2017.programming-conference.org/attending/registration - Early registration ends soon! Please register before March 13th to obtain the early-bird discount. - More information on attending the conference is available at: http://2017.programming-conference.org/attending/reaching-the-conference - More information on accommodation is available at: http://2017.programming-conference.org/attending/accomodation *********************************************************************** About Brussels *********************************************************************** Brussels is the capital of Belgium, and home to the headquarters of the European Union. Despite its European nature and all the different languages spoken on every street corner, Brussels still has a very "village-like"Â character. It's well known for its Grand-Place, its Atomium, its Manneken-Pis, its Gueuze and its Kriek, its waffles and its chocolates. Be sure to take some time off to soak up the special atmosphere of its many different districts: Take a stroll to Rue Dansaert, Halles Saint-GÃ©ry, and Place Sainte-Catherine. Head for Saint-Boniface, ChÃ¢telain, or Flagey. In other words, go ahead and relish Brussels, a fine and beautiful city to explore and discover. ----------------------------------------------------------------------- For more information, please visit http://2017.programming-conference.org You can also find us on Twitter (twitter.com/programmingconf) and Facebook (facebook.com/programmingconf) Looking forward to see you in Brussels, Theo D'Hondt (General chair), Wolfgang De Meuter (Organizing chair), Crista Lopes (Program chair), JÃ¶rg Kienzle, Ralf LÃ¤mmel, Hidehiko Masuhara, Tim Molderez, Tobias Pape, and Jennifer Sartor

March 9, 2017

Re: [Pharo-users] What is the craziest bug you ever face

by Nicolai Hess

2017-03-09 12:36 GMT+01:00 Stephane Ducasse <stepharo.self(a)gmail.com>: > Hi guys > > During the DSU workshop we were brainstorming about what are the most > difficult bugs we faced and what are the conceptual tools that would have > helped you. > > Stef > https://pharo.fogbugz.com/f/cases/14332/use-ast-not-parseTree-so-we-benefit… Running a RBLintRule modified the (cached) AST of this methods code. So, even if the compiled method did not changed, and the "real" source code did not changed, you actually see the source code from the modified AST. There are a couple of things which went wrong resp. make this bug difficult: 1. A LintRule that just should *check* the code, actually created a transformation somewhere behind the scene (Ok, it is a RBTransformationRule, and originally used for code refactoring as well) 2. As long as we *analyze* code, the real code (string/ast/source) should be considered immutable 3. the modified AST was cached 4. what-you-see-is-not-what-you-get. We are (or I am) used to consider the system browser a tool for view and edit methods source code. If the code we see isn't actually the methods source, but another representation of some kind of (cached) model (formatted AST-node-source code), it would be good to have some way to indicate this (switch between "raw"-code / model-code / ast-node-code).

March 9, 2017

Re: [Pharo-users] [Pharo-dev] Archive Page for Pharo TechTalks

by Dimitris Chloupis

I live to serve :D On Thu, Mar 9, 2017 at 2:40 PM Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > thanks @kilon, I will upload them to youtube and add to list/archive > > On 9 Mar 2017, at 13:07, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > I kept the first few talks in this repo > > https://gitlab.com/Kilon/pharo-techtalks/tree/master > > I have mentioned it before but I mention it once again to remind people or > maybe you want to add those to the website. Its easy to link directly to > each audio file if you want. > > On Thu, Mar 9, 2017 at 1:14 PM Esteban Lorenzano <estebanlm(a)gmail.com> > wrote: > > â¦ and I moved techtalks from http://pharo.org/community to > http://pharo.org/documentation (because I think it belongs there). > > Esteban > > > On 9 Mar 2017, at 11:56, Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > > and I made a youtube playlist: > > https://www.youtube.com/playlist?list=PL4actYd6bfnx8l8cqYWhdNB6gJgRvk5sH > > cheers, > Esteban > > On 9 Mar 2017, at 11:02, Marcus Denker <marcus.denker(a)inria.fr> wrote: > > Hi, > > I added > > http://pharo.org/TechTalk > > This is linked from http://pharo.org/community > > The idea is to keep a log of all past tech talks with links to the > archival recording (if there is one). > > Marcus > > > > >

March 9, 2017

Re: [Pharo-users] How to remove a class ?

by tesonep＠gmail.com

You can send the message #removeFromSystem to the class. Cheers On Thu, Mar 9, 2017 at 1:44 PM, Hilaire <hilaire(a)drgeo.eu> wrote: > Hi, > > One creates by code a new class with: "Object subclass: #Situation". > What is the counter part API to remove it from the system? > > Thanks > > Hilaire > > -- > Dr. Geo > http://drgeo.eu > > > -- Pablo Tesone. tesonep(a)gmail.com

March 9, 2017