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[Pharo-project] SciSmalltalk

by Serge Stinckwich

Dear all, we already discuss about that in the moose and pharo mailing-list. Maybe this is too late, but please find a small proposal for gsoc 2012 below. ================================================================ Name: SciSmalltalk Level: Intermediate Possible mentor: Serge Stinckwich Possible second mentor: ? Description Smalltalk has at that time no equivalent to mathematical libraries like NumPy, SciPy (Python) or SciRuby (Ruby). The goal of the SciSmalltalk project is to develop an open-source library of mathematical for the Smalltalk programming language (MIT Licence). Technical Details The development of this project is to be done in Pharo Smalltalk, but the code should be portable to other Smalltalk flavors. Numerous Smalltalk projects provide already some basic functionalities (complex and quaternions extensions, random number generator, fuzzy algorithms, LAPACK linear algebra package, Didier Besset's numerical methods, ...). A first task will be to do an audit of all the existing projects that provide some mathematical stuff and build a Pharo Configuration to load them in a fresh Pharo Smalltalk image. After that, the student help by his/her mentors will decide what are the numeric algorithms to develop in priority. The student will need to know some basic numeric algorithms usually found in such libraries. Units tests should also be provided. Benefits to the Student The student will help the Smalltalk community in a very concrete way. The student will learn to design well-designed code with tests. Benefits to the Community Having a package providing more elaborate numeric libraries is really important to develop the use Smalltalk in new domains (robotics, high performance computing, computer vision, bio-computing, ...). The lack of numeric librairies hamper the use of the Smalltalk in a scientific context at the moment. An another goal of this project is to develop a community of people interested by these topic. Regards, -- Serge Stinckwich UMI UMMISCO 209 (IRD/UPMC), Hanoi, Vietnam Every DSL ends up being Smalltalk http://doesnotunderstand.org/

March 28, 2012

[Pharo-project] Close encounters of the weird kind

by Schwab,Wilhelm K

Eliot, all, My GSL code, with callbacks is confusing me. First, I call gsl_multifit_fdfsolver_set(). This seems to work, hitting various callbacks (apparently successfully), but then gives an error with #'bad number of arguments'. I have looked, and don't see an invalid number of arguments anywhere. I can proceed past that(??), only to crash in gsl_multiroot_fdfsolver_iterate(). The C backtrace appears below. Is there anything I might glean from it? Any ideas? Bill C stack backtrace: /home/bills/Work2012/Pharo-1.3/CogVM[0x80968b1] /home/bills/Work2012/Pharo-1.3/CogVM[0x8096a52] [0xb7720410] /usr/lib/libgsl.so.0(gsl_multifit_fdfsolver_iterate+0x37)[0x759fc5a7] /home/bills/Work2012/Pharo-1.3/libSqueakFFIPrims.so(primitiveCallout+0x4b2)[0x75c682a2] /home/bills/Work2012/Pharo-1.3/CogVM(interpret+0x3f68)[0x808dcc8] /home/bills/Work2012/Pharo-1.3/CogVM[0x808fc97] /home/bills/Work2012/Pharo-1.3/CogVM[0x8090664] /home/bills/Work2012/Pharo-1.3/CogVM(main+0x38a)[0x809774a] /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6)[0xb7580bd6] /home/bills/Work2012/Pharo-1.3/CogVM[0x805acc1]

March 28, 2012

Re: [Pharo-project] Problem with loading Nautilus after Seaside

by StÃ©phane Ducasse

thanks for the report. To me it looks like we changed some on classVar lookup and it is not modular anymoreâ¦ Stef On Mar 27, 2012, at 11:16 PM, Martin Sandiford wrote: > Not sure where to report this, so here goes... > > As of just recently, I can't load Nautilus after loading Seaside due > to a name clash on "Bindings". It's a global in DynamicBindings-lr.13 > (Seaside) and a class variable in Spec-Core-BenjaminVanRyseghem.9 > (Nautilus). If this is a class variable then it should not be a problem, code using a class var should see the class var before the global. > > Ideally I think DynamicBindings wouldn't be putting a bare word symbol > like "Bindings" into globals, but as it happens the declaration in > Spec-Core/ComposableModel isn't used and could be removed. > > Cheers, > Martin >

March 28, 2012

Re: [Pharo-project] Announcement vs SystemChangeNotifier

by StÃ©phane Ducasse

Ok I will digest that :) Thanks for the food for thoughts. > > yes.. now since i remember our discussion about it.. yes.. i am still > against it. > because it just violating the principle of least authority: > - any guy who thinks he is a position to suspend announcements can do it, > but since he doesn't knows who else subscribed to them, he simply can > ruin the logic of other event consumers... > > I think we should think about other approach: > In case of system changes notifier , a "do silently" was do not log > the changes. > That means that if we could have a logger plugged into system > announcer, one should tell a system logger to ignore system > notifications > and do not log them for a while, instead of making system notifier > suspending all subscriptions, leading to unknown consequences for the > rest of > event listeners! > If guy wants to suspend logging, he should tell logger to suspend it.. > like that, no other facilities will be affected. > > -- > Best regards, > Igor Stasenko. >

March 28, 2012

[Pharo-project] Hello newcomers :)

by StÃ©phane Ducasse

The pharo mailing-list is regularly attracting some newcomers and I would like to welcome them :) So welcome. We really want to improve the system so your contribution are welcomed. Now the first contribution you can do is to sign the license http://www.pharo-project.org/community/how-to-contribute http://www.pharo-project.org/license So welcome guys! Do not hesitate to let us know what you are doing and how we can improve the system and let you invent your future :) Stef

March 28, 2012

Re: [Pharo-project] GSoC proposal: Naked Objects using Magritte

by Stephan Eggermont

>Stephan, I can help as second Mentor if you still need one. >...Stan I haven't been able to reach Esteban yet. He is supposed to be moving this week. Thanks for the offer. Stephan

March 28, 2012

[Pharo-project] Problem with loading Nautilus after Seaside

by Martin Sandiford

Not sure where to report this, so here goes... As of just recently, I can't load Nautilus after loading Seaside due to a name clash on "Bindings". It's a global in DynamicBindings-lr.13 (Seaside) and a class variable in Spec-Core-BenjaminVanRyseghem.9 (Nautilus). Ideally I think DynamicBindings wouldn't be putting a bare word symbol like "Bindings" into globals, but as it happens the declaration in Spec-Core/ComposableModel isn't used and could be removed. Cheers, Martin

March 28, 2012

Re: [Pharo-project] no Complex class in Pharo?

by Nicolas Cellier

Le 25 mars 2012 12:17, Nicolas Cellier <nicolas.cellier.aka.nice(a)gmail.com>a Ã©crit : > http://www.squeaksource.com/Math-Complex > Oops, it was http://www.squeaksource.com/Complex > > Gofer new > squeaksource: 'MetacelloRepository'; > package: 'ConfigurationOfComplex'; > load. > ((Smalltalk at: #ConfigurationOfComplex) project version: #'stable') > perform: #load. > > Nicolas > > Le 24 mars 2012 21:29, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> a > Ã©crit : > > >> On Mar 24, 2012, at 8:20 PM, Lawson English wrote: >> >> > Was this done just for streamlining, or are there known bugs in the >> implementation of Complex in Squeak? >> >> no there were a lot of discussions three years ago about the fact that >> nobody used complex >> the implementation was not coherent >> Now I think that serge packaged it with its quaternium implementation. >> >> >> Stef >> > >> > L. >> > >> >> >> >

March 28, 2012

[Pharo-project] [update 1.4] #14415

by Marcus Denker

14415 ----- Issue 5552: Transcript show is not working http://code.google.com/p/pharo/issues/detail?id=5552 -- Marcus Denker -- http://marcusdenker.de

March 28, 2012

Re: [Pharo-project] ProtoObject initialize

by Guillermo Polito

Now, re-initializing classes is kind of weird :P. I should only initialize classes with it's own #initialize and their subclasses -only if they have class instance methods :/. ufa On Tue, Mar 27, 2012 at 5:29 AM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > > > On Fri, Mar 23, 2012 at 11:03 AM, Noury Bouraqadi <bouraqadi(a)gmail.com>wrote: > >> Hi Guillermo, >> >> The expression "ProtoObject initialize" does actually work. >> ProtoObject metaclass inherits the initialize method from Behavior. >> But, running it resets the ProtoObject critical IVs (superclass, >> methodDict and format). >> Hence the hang. >> > > Exactly. Otherwise, the VM would have crashed (not hanged) with an error > saying "recursive does not understand". Check the VM code for more details. > > > >> >> Noury >> >> On 22 mars 2012, at 22:44, Guillermo Polito wrote: >> >> > Answering myself, thanks to Esteban: >> > >> > It hangs because It does not understand #initialize, so It throws a >> DNU, and it also does not understand #doesNotUnderstand: >> > >> > On Thu, Mar 22, 2012 at 6:12 PM, Guillermo Polito < >> guillermopolito(a)gmail.com> wrote: >> > hanged my image :3. >> > >> > Is that something I was not supposed to do? >> > >> > Guille >> > >> >> Noury >> -- >> http://twitter.com/#!/NouryBouraqadi >> http://www.kroobe.com/profile/noury >> >> >> Afin de contribuer au respect de l'environnement, >> merci de n'imprimer ce courriel qu'en cas de necessite >> >> Please consider the environment before you print >> >> >> >> >> > > > -- > Mariano > http://marianopeck.wordpress.com > >

March 28, 2012