October 2015 - Pharo-dev - lists.pharo.org

[ANN] Pharo Consortium New Gold Member: Lifeware

by Marcus Denker

The Pharo Consortium is very happy to announce that Lifeware has joined the Consortium as an Gold Member. About - Lifeware: http://www.lifeware.ch - 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

Oct. 15, 2015

Re: [Pharo-dev] Autonomous Shark-Monitoring Drone

by Serge Stinckwich

On Wed, Oct 7, 2015 at 5:54 PM, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > Dear Friends and Colleagues, Hi Eliot, > as you may know, Sharks, as apex predators, are vital to maintaining > healthy marine ecosystems, and at the same time, their populations are > plummeting due to human actions. It is estimated for example that the > population of pelagic oceanic white tip sharks is reducing by 17% per year > [1] and I've heard (can't find a reference) that populations in the eastern > indian/western pacific are at 1% of normal levels. Such reductions in > populations create "trophic cascades" that produce wide-ranging changes in > populations of different species all the way down the food chain [2]. And > the marine ecosystem is a key source of human nutrition; it comprises > between 13% and 17% of global human protein intake [3]. Recently, I talk with some people from my research institute who are working on Shark behavior modeling in the CHARC program : http://www.la-reunion.ird.fr/le-programme-charc Sorry this is in French only They use acoustic marks on sharks in order to locate them thanks to a surveillance network. The idea is not only to manage the risks regarding sharks but also to use them to have information about ocean's environment parameters. I start to discuss a little bit with them in order to model sharks behavior. > As you may also know, there is currently a shark attack crisis in New > South Wales [4]. While most people in the region oppose killing sharks in > response to the crisis, existing solutions, netting and culling reduce those > same threatened populations of sharks upon which the sustainability of > marine food supply d ecosystems depend [5], and are arguably ineffective > [6]. Apparently the most successful approach at avoiding attacks is the use > of human spotters, as used in Cape Town, where people in tall towers scan > the sea close to shore [6]. > > But please watch this Youtube video [7] from Pismo Beach, California. The > shark is spotted at about 1:20 into the video. This drone, a phantom 3, is > sending live video back to the operators, who are using remote control. > What we can see from this video is that the point of view of drones is far > superior to that of spotters. > > My first thought is that autonomous drones could provide a cheap and > scalable solution to patrolling beaches to prevent shark attacks. I expect > that processors like the Pi 2 have easily enough processing power to both > plan and execute search patterns along beaches, and perform the image > recognition necessary to reliably detect potentially dangerous sharks. A > drone might also be able autonomously to visit surfers and swimmers near to > the shark and warn them, either by some signal such as flashing red LEDs or > an audible message (language issues notwithstanding). The drone would have > to be able to identify swimmers and surfers in the water (not easy; sharks > confuse seals and surfers all the time), but computing an optimal route to > visit suspected swimmers should be relatively easy :-). > > I imagine that sooner or later it will be possible to construct cheap > rugged solar powered docking/charging shelters that drones could depart from > and return to, to charge and shelter from the elements after patrols. > Satellite communications could provide status reports for maintenance. This is a really interesting project. My lab is also interested by using drones for environmental surveillance. I can talk with my colleagues working on sharks if this is something that they envision for the future. Another idea is to use marine drones. Regards -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

Oct. 15, 2015

Re: [Pharo-dev] Storing System Settings using STON

by stepharo

Cool! Could you send an example of the file contents? Stef Le 12/10/15 21:45, Juraj Kubelka a Ã©crit : > Hi, > > we have a slice that introduce new storage solution for System > Settings. See: > https://pharo.fogbugz.com/f/cases/16681/Storing-System-Settings-using-STON > > > You can load it using: > > Gofer it > smalltalkhubUser: 'Pharo' project: 'Pharo50Inbox'; > package: 'SLICE-Issue-16681-Storing-System-Settings-using-STON'; > load. > > When you open the Setting Browser, you can see that every setting has > new items in context menu: > > > Thanks for reviewing it. > Cheers, > Juraj

Oct. 15, 2015

Re: [Pharo-dev] Random forest in Pharo

by stepharo

We do not want to be bound to install and maintain connection with fifteen different libs. Stef Le 14/10/15 18:01, philippe.back(a)highoctane.be a Ã©crit : > > Not sure you would get enough performance on Pharo per se. Xe may be > better off leveraging a multicore enabled external lib. Like caret and > doMC on R. > > Le 14 oct. 2015 17:49, "Serge Stinckwich" <serge.stinckwich(a)gmail.com > <mailto:serge.stinckwich@gmail.com>> a Ã©crit : > > I don't think so. > > I followup your message on SciSmalltalk mailing-list. > This is something that might interested us ;-) > > > > On Wed, Oct 14, 2015 at 4:54 PM, Damien Cassou > <damien.cassou(a)inria.fr <mailto:damien.cassou@inria.fr>> wrote: > > Hi, > > > > did anyone implement a Random Forest algorithm in Pharo? > > > > https://en.wikipedia.org/wiki/Random_forest > > > > -- > > Damien Cassou > > http://damiencassou.seasidehosting.st > > > > "Success is the ability to go from one failure to another without > > losing enthusiasm." --Winston Churchill > > > > > > -- > Serge Stinckwich > UCBN & UMI UMMISCO 209 (IRD/UPMC) > Every DSL ends up being Smalltalk > http://www.doesnotunderstand.org/ >

Oct. 15, 2015

Re: [Pharo-dev] GTools merging configurations

by stepharo

I can imagine that well. Up to you but I think that having modular parts is nice too. What we should is a way to automatically update configurations. Stef Le 14/10/15 22:20, Andrei Chis a Ã©crit : > Hi, > > For the GTInspector, GTPlayground and GTSpotter we now have distinct > configurations. > However, this complicates the integration process with Pharo as a lot > of configurations need to be updated. > So we'd like to merge them in ConfigurationOfGToolkitCore. > > What do you think? > This will simplify a lot the integration process. > > Cheers, > Andrei

Oct. 15, 2015

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/50385 Home: https://github.com/pharo-project/pharo-core

Oct. 15, 2015

[pharo-project/pharo-core] 4b94be: 50385

by GitHub

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Refactoring-Critics.package/RBVariableReferencedOnceRule.class/class/testing/checksClass.st A Refactoring-Critics.package/RBVariableReferencedOnceRule.class/instance/running/basicCheck_.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50384.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50385.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50384.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50385.st M ScriptLoader50.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 50385 16770 Create a basic version of checking methods in LintRules https://pharo.fogbugz.com/f/cases/16770 16785 Replace the usages of #smalltalkCode in OpalTools https://pharo.fogbugz.com/f/cases/16785 16525 Nautilus leaking SystemAnnouncements https://pharo.fogbugz.com/f/cases/16525 http://files.pharo.org/image/50/50385.zip

Oct. 15, 2015

Re: [Pharo-dev] tests should be green

by Marcus Denker

Yes, -> there is a bug somewhere that flattens traits in some cases -> we need to write a script to delete all the wrong methods. > On 14 Oct 2015, at 17:16, Nicolai Hess <nicolaihess(a)web.de> wrote: > > Please, someone can look at the Collections-Tests > The ReleaseTest complains about > > testLocalMethodsOfTheClassShouldNotBeRepeatedInItsTraits > (These are all Test-subclasses that use traits, but all(!) trait method are > compiled in the class instead, this happened after someone moved the Test > packages (for bootstrap?) > > OrderedCollectionTest > FloatArrayTest > ArrayTest > DateTest > HeapTest > MorphicTextAdapter > LinkedListTest > DatePrintFormatTester > StackTest > CheckboxButtonMorph > IntervalTest > DateAndTimeTest > SimpleButtonMorph > MethodDictionaryTest > SetTest > DictionaryTest > BagTest > SymbolTest > StringTest > CollectionRootTest > SortedCollectionTest >

Oct. 15, 2015

Re: [Pharo-dev] TestPGConnection>>testNotify2 fails

by Levente Uzonyi

Notices and notifications are entirely different things in Postgresql, so I guess something got mixed up here. Levente On Wed, 14 Oct 2015, Esteban A. Maringolo wrote: > Problem Â¿solved? > > I ran the test against a PostgreSQL 9.2 and the test passed. > > However the test passes... but it is failing silently, because it > should raise a NoticeResponse and it's throwing a PGErrorResponse > instead. > > It seems like this has been buried for years, and because nobody ever > complained about it I guess nobody uses it. > > Regards! > > Esteban A. Maringolo > > > 2015-10-14 14:20 GMT-03:00 Esteban A. Maringolo <emaringolo(a)gmail.com>: >> I have a failing test in my computer when running the test mentioned >> in the subject, I get the following error: "PGConnection has a >> defective state machine" >> >> Stack: >> PGConnection(Object)>>error: >> PGConnection(PGActiveObject)>>stCantHappen: >> PGConnection>>stCantHappen: >> PGConnection(PGActiveObject)>>processEvent: >> PGConnection(PGActiveObject)>>generateEvent:to: >> PGConnection(PGActiveObject)>>saProcessEventsUntil: >> PGConnection>>copy:withStream: >> TestPGConnection>>testNotify2 >> >> I tested in my computer with Pharo4, Pharo3 and Pharo2, and I get the >> same error in all the images with the latest version of it, and also >> with the oldest I could load (in Pharo 2, Name: PostgresV2-Maiano.24). >> >> My PostgreSQL server version is 9.3.7. >> >> Does it fail for you too? >> >> Regards! >> >> Esteban. > >

Oct. 14, 2015

GTools merging configurations

by Andrei Chis

Hi, For the GTInspector, GTPlayground and GTSpotter we now have distinct configurations. However, this complicates the integration process with Pharo as a lot of configurations need to be updated. So we'd like to merge them in ConfigurationOfGToolkitCore. What do you think? This will simplify a lot the integration process. Cheers, Andrei

Oct. 14, 2015