January 2018 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Any perspective of Woden in Pharo 6.1/7 ?????

by Alexandre Bergel

Hi Casimiro! Sorry for the late reply. We do have a working version of Woden for Pharo 7. It would be great if you could try. https://github.com/ronsaldo/woden2 On OSX, I did: -=-=-=-=-=-=-=-=-= git clone https://github.com/ronsaldo/woden2.git cd woden2 ./loadWoden2.sh -=-=-=-=-=-=-=-=-= It takes time to install & compile (~ 10 minutes?), but it works well Alexandre > On Jan 2, 2018, at 5:21 AM, Casimiro - GMAIL <casimiro.barreto(a)gmail.com> wrote: > > Is there any perspective of Woden working in Pharo 6.1 or later versions (7)???? > > Best regards, > > > Casimiro > -- > The information contained in this message is confidential and intended to the recipients specified in the headers. If you received this message by error, notify the sender immediately. The unauthorized use, disclosure, copy or alteration of this message are strictly forbidden and subjected to civil and criminal sanctions. > > == > > This email may be signed using PGP key ID: 0x4134A417

Jan. 10, 2018

Re: [Pharo-users] Unresponsive/frozen Gui

by Stephane Ducasse

The problem I got with Pharo 6.1 on sierra are - typing and pressing arrow and the vm crash - something getting a crash related to freetype - and sometimes when stepping over get hundred of debuggers but no freeze. stef On Wed, Jan 10, 2018 at 9:40 PM, Andrei Stebakov <lispercat(a)gmail.com> wrote: > I experience that issue once in a while when I leave the pharo 6.1 on > windows and when I come back to it the UI is frozen. > Now I download pharo with moose image and it started to happen again (BTW I > couldn't install Moose in my pharo 6.1 using Metacello command) > I wonder if it's something that happens to many users and I have to get used > to it (ui freezes) or there ways to avoid it. > Again, maybe it's a windows specific problem and most of the pharo users are > either on Mac or Linux.

Jan. 10, 2018

Re: [Pharo-users] [ANN] Python3Generator and MatplotLibBridge

by Stephane Ducasse

Johan Brichau could execute java code from VisualWorks. He had special metaclass whose dictionaries contains strange mirror to java methods. So I'm interested to see how far you can get :) On Wed, Jan 10, 2018 at 4:58 PM, Julien <julien.delplanque(a)inria.fr> wrote: > Even if I learned things from your answer, I think you misunderstood what I > was talking about. :p > > What I want is a mechanism to describe pythonâs objects from Pharo and being > able to: > 1. Serialise those objects from Python > 2. Send those object to Pharo (whatever the way it is done: socket, write in > a file from python and read from Pharo, etcâ¦) > 3. Materialize those serialised Pythonâs objects as Pharo objects. > > Basically, I want to be able to transfer data from Python to Pharo easily. > > Something better than getting the values held by Python objects by parsing > their String representation Â« by hand Â»... :-) > > Julien > > --- > Julien Delplanque > Doctorant Ã lâUniversitÃ© de Lille 1 > http://juliendelplanque.be/phd.html > Equipe Rmod, Inria > BÃ¢timent B 40, avenue Halley 59650 Villeneuve d'Ascq > NumÃ©ro de tÃ©lÃ©phone: +333 59 35 86 40 > > Le 10 janv. 2018 Ã 16:43, Dimitris Chloupis <kilon.alios(a)gmail.com> a Ã©crit > : > > > > On Mon, Jan 8, 2018 at 5:50 PM Julien <julien.delplanque(a)inria.fr> wrote: >> >> Beware that no mechanism to get back values from Python is defined for now >> (except if you just want the String >> representation of those objects, then you can get that if you use atlas). >> >> Iâd like to have that but it is not easy. I would like a way to describe >> how to map Pythonâs objects to Pharoâs objects >> from Pharo and to have the code to do that in Python side generated >> automatically but some thinking is neededâ¦ >> >> Julien > > > It won't be easy > > I have noted in the past the similarities between Pharo and Python but here > there is also a massive difference. > > In Pharo we have the mentality of reinventing many stuffs ourselves so the > systems is based to a very large extend on Pharo that runs on very efficient > JIT VM. Almost everything is Pharo code. > > Python on the other hand is the exact opposite, Python runs on an extremely > slow VM but more than 50% of its code in written in C, Python itself or its > third party libraries. > > So the irony is that even though in theory and practice Python code is one > of the slowest , in actual scenarios its one of the fastest able to > outperform even Java to a very large extend because its libraries that are > made for high performance like Numpy are predominately C code. Pretty much > every C or C++ library has wrappers for Python which is what made it so > popular. Hence the reason behind the insanity when it comes to top > performance Python being second only to C++. > > So you will have not only map the Python oobjects to Pharo object but also > map the C code. Even though this may sound impossible the good news is that > Python libraries, having the extension pyd , are basically DLLs made > supporting a specific API which is very minimal in design. Similar to our > UFFI , the only major difference is that library is responsible of keeping > track of the reference count, which is used by Python GC to erase no longer > used objects from memory. Which is a very simple increase and decrease. > > So not only you will have to remap the Python objects but also DLLs as well. > > To add salt to the wound , Python has something that Pharo does not. > Multiple inheritance. Which of course makes your goal even harder. Python > coder's generally avoid multiple inheritance as much as we avoid overriding > doesNotUnderstand , but its a feature they use none the less. > > Hence why I did not even consider trying something like that. Plus you will > be gaining no advantage because C code is unportable to Pharo anyway. Sure > we have Slang , but Slang is extra careful with types which normal Pharo > code does not. You will be losing performance because yes porting to Pharo > as much as JIT VM may be great , its no much for Python libraries that > merely leverage C. Plus you will have to update it each time the library > changes etc. > > So my conclusion was that the most efficient way was to let Python execute > the library and just manipulate Python. > > It's much easier to do the exact opposite, which goes against our mentality > , and port your Pharo objects to Python objects. Because a) your objects > will always be far less than a complete library and system b) you wont have > to worry about C code because you wont have any c) all the other negatives I > mention , disappear. > > It usual case of not being able to have your cake and eat it too. > > >

Jan. 10, 2018

Re: [Pharo-users] How to I setup Bloc?

by Aliaksei Syrel

Hi Stef, Awesome, thank you! Cheers, Alex On 10 January 2018 at 21:48, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > Removed! > > On Wed, Jan 10, 2018 at 9:46 PM, Stephane Ducasse > <stepharo.self(a)gmail.com> wrote: > > Hi aliaksei I will remove this link. > > > > On Wed, Jan 10, 2018 at 6:39 AM, Aliaksei Syrel <alex.syrel(a)gmail.com> > wrote: > >> Hello Photon, > >> > >> I have literally no idea where you found this paper but it is years old. > >> > >> Could you try to install it according to instructions on Bloc GitHub > page: > >> > >> https://github.com/pharo-graphics/Bloc > >> > >> You might also want to try a MemoryGame tutorial: > >> > >> https://github.com/pharo-graphics/Tutorials > >> > >> Let me know if something does not work. > >> > >> P.S. Could somebody with access rights delete this page: > >> https://ci.inria.fr/pharo-contribution/job/PharoBookWorkInProgress/ > lastSuccessfulBuild/artifact/book-result/Bloc/Bloc.html > >> ? > >> > >> Alex > >> > >> On Wed, 10 Jan 2018 at 03:26, Photon <nico-braun(a)live.de> wrote: > >>> > >>> Hello I have trouble with Bloc. I tried to install it like this as i > read > >>> it > >>> in a paper on Bloc > >>> > >>> > >>> but then this does not work because there is no suchclass, istall is > send > >>> to > >>> nil. > >>> > >>> > >>> > >>> I had also trouble with the tutorial earlier. I could not see anything > in > >>> the preview altho the code was aparrantly fine. > >>> I really like to do something with bloc but i cant even set it up > >>> properly. > >>> Please help me. > >>> > >>> > >>> > >>> -- > >>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > >>> > >> -- > >> Cheers, > >> Alex > >

Jan. 10, 2018

Re: [Pharo-users] How to I setup Bloc?

by Stephane Ducasse

Removed! On Wed, Jan 10, 2018 at 9:46 PM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > Hi aliaksei I will remove this link. > > On Wed, Jan 10, 2018 at 6:39 AM, Aliaksei Syrel <alex.syrel(a)gmail.com> wrote: >> Hello Photon, >> >> I have literally no idea where you found this paper but it is years old. >> >> Could you try to install it according to instructions on Bloc GitHub page: >> >> https://github.com/pharo-graphics/Bloc >> >> You might also want to try a MemoryGame tutorial: >> >> https://github.com/pharo-graphics/Tutorials >> >> Let me know if something does not work. >> >> P.S. Could somebody with access rights delete this page: >> https://ci.inria.fr/pharo-contribution/job/PharoBookWorkInProgress/lastSucc… >> ? >> >> Alex >> >> On Wed, 10 Jan 2018 at 03:26, Photon <nico-braun(a)live.de> wrote: >>> >>> Hello I have trouble with Bloc. I tried to install it like this as i read >>> it >>> in a paper on Bloc >>> >>> >>> but then this does not work because there is no suchclass, istall is send >>> to >>> nil. >>> >>> >>> >>> I had also trouble with the tutorial earlier. I could not see anything in >>> the preview altho the code was aparrantly fine. >>> I really like to do something with bloc but i cant even set it up >>> properly. >>> Please help me. >>> >>> >>> >>> -- >>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >>> >> -- >> Cheers, >> Alex

Jan. 10, 2018

Re: [Pharo-users] How to I setup Bloc?

by Stephane Ducasse

Hi aliaksei I will remove this link. On Wed, Jan 10, 2018 at 6:39 AM, Aliaksei Syrel <alex.syrel(a)gmail.com> wrote: > Hello Photon, > > I have literally no idea where you found this paper but it is years old. > > Could you try to install it according to instructions on Bloc GitHub page: > > https://github.com/pharo-graphics/Bloc > > You might also want to try a MemoryGame tutorial: > > https://github.com/pharo-graphics/Tutorials > > Let me know if something does not work. > > P.S. Could somebody with access rights delete this page: > https://ci.inria.fr/pharo-contribution/job/PharoBookWorkInProgress/lastSucc… > ? > > Alex > > On Wed, 10 Jan 2018 at 03:26, Photon <nico-braun(a)live.de> wrote: >> >> Hello I have trouble with Bloc. I tried to install it like this as i read >> it >> in a paper on Bloc >> >> >> but then this does not work because there is no suchclass, istall is send >> to >> nil. >> >> >> >> I had also trouble with the tutorial earlier. I could not see anything in >> the preview altho the code was aparrantly fine. >> I really like to do something with bloc but i cant even set it up >> properly. >> Please help me. >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >> > -- > Cheers, > Alex

Jan. 10, 2018

Unresponsive/frozen Gui

by Andrei Stebakov

I experience that issue once in a while when I leave the pharo 6.1 on windows and when I come back to it the UI is frozen. Now I download pharo with moose image and it started to happen again (BTW I couldn't install Moose in my pharo 6.1 using Metacello command) I wonder if it's something that happens to many users and I have to get used to it (ui freezes) or there ways to avoid it. Again, maybe it's a windows specific problem and most of the pharo users are either on Mac or Linux.

Jan. 10, 2018

Re: [Pharo-users] How to I setup Bloc?

by Photon

Omg i didnt even reaf further asuming that i should get the grey sqaure as result. Now once you say it it`s kinda obvoius. I keep practicing. Thanks again for your time :) -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 10, 2018

Re: [Pharo-users] How to I setup Bloc?

by Aliaksei Syrel

Then the behaviour you get is expected one. There is no bug or issue there. On page 12 in section 3.2 (Starting to draw a card) it tells you to implement a drawOnSparta: method. After that you should get the same as on Figure 3-1. Since you didn't implement it, you obviously get nothing. It is like to only buy a garage and then being surprised that there is no car inside ;) Cheers, Alex On 10 January 2018 at 18:29, Photon <nico-braun(a)live.de> wrote: > Id did it following this pdf: > http://files.pharo.org/books-pdfs/booklet-Bloc/2017-11-09-memorygame.pdf > <http://files.pharo.org/books-pdfs/booklet-Bloc/2017-11-09-memorygame.pdf> > > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > >

Jan. 10, 2018

Re: [Pharo-users] How to I setup Bloc?

by Photon

Id did it following this pdf: http://files.pharo.org/books-pdfs/booklet-Bloc/2017-11-09-memorygame.pdf <http://files.pharo.org/books-pdfs/booklet-Bloc/2017-11-09-memorygame.pdf> -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Jan. 10, 2018