- Pharo-users - lists.pharo.org

Re: [Pharo-users] [Seaside] [ANN] ZÃ¼rich Smalltalk Meetup Nov 8th, 2016

by Michal Balda

Hi, the short answer is: not yet. The back story is: We have been experimenting with GemStone and Tugrik at work. While Tugrik appears to work very well (even though it is new and not yet finished), I found the overall architecture (Tugrik+Mongo+Voyage) a bit complicated. Tugrik is meant to be a replacement for Voyage-Mongo but actually uses parts of its implementation and behavior. I understand that it does so to mimic Voyage-Mongo so that switching from Mongo to GemStone is relatively painless. That does not fit our use case though - we don't need a replacement for Mongo since we haven't used it in the first place. We would also like to have something that we could possibly maintain ourselves, should the priorities of Esteban or Dale change in a few years (I don't want this to sound negative, I am sure they would not drop the support just because they want to, but I understand they are very busy and for us it is a certain risk we would like to mitigate). While playing with Tugrik I came up with a few ideas so I started a clean Pharo image with the following task in mind: find a way of getting objects from Pharo to GemStone and back, as simply as possible, without any unnecessary dependencies. In other words, I wanted to see if I could create a simpler Pharo-to-GemStone persistence solution than the existing Tugrik+Mongo+Voyage stack. As of now it's still in an early phase but I already have something that could work. For the meetup in ZÃ¼rich I want to have something to show (a small demo), or, if I run into any conceptual issues, to have a topic for discussion if anyone's interested. I won't release it publicly until I am sure it works well. But I can guarantee you that if anything exciting does emerge, this mailing list will learn about it. It will definitely not be exclusive for the people who attend the meetup. I just want to use the opportunity of the meetup to get early feedback and/or input, maybe it will trigger a discussion about important issues that I haven't thought about yet. I am not at all a GemStone expert so the possibility is there. Michal On 18.10.2016 14:38, Mariano Martinez Peck wrote: > Hi, > > I would love to be in Zurich, but I obviously can't :( > So... is there a way to get some more info about that "Gemstone-based > persistence framework for Pharo"? And who is Michal? Last name? > > Thanks, > > > -- > Mariano > http://marianopeck.wordpress.com

Oct. 19, 2016

Re: [Pharo-users] Cog VM on Raspberry Pi ?

by Sven Van Caekenberghe

OK, thanks everybody for the replies, seems like I was looking at 3 basically identical VM's with Cog. I went back to an older installation (on a RPi2), that performed way worse (being a stack interpreter): volumio@audio359:~/pharo$ ./bin/PharoS --version 3.9-7 #1 Thu Mar 26 14:59:31 CET 2015 gcc 4.6.3 [Production ITHB VM] StackInterpreter VMMaker.oscog-jeanbaptistearnaud.828 uuid: ba8d2ed6-70b9-4309-8bf0-9eda9c0d1c2d Mar 26 2015 https://github.com/pharo-project/pharo-vm.git Commit: 32d18ba0f2db9bee7f3bdbf16bdb24fe4801cfc5 Date: 2015-03-24 11:08:14 +0100 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #126 Linux pharo-contribution-raspberrypi-linux 3.2.0-58-generic #88-Ubuntu SMP Tue Dec 3 17:37:58 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux plugin path: /home/volumio/pharo/bin/ [default: /home/volumio/pharo/bin/] volumio@audio359:~/pharo$ ./bin/PharoS --nodisplay mpdc.image printVersion [version] 4.0 #40624 volumio@audio359:~/pharo$ ./bin/PharoS --nodisplay mpdc.image eval '1 tinyBenchmarks' '7866273 bytecodes/sec; 615105 sends/sec' > On 19 Oct 2016, at 17:24, Henrik Johansen <henrik.s.johansen(a)veloxit.no> wrote: > > >> On 18 Oct 2016, at 11:11 , Sven Van Caekenberghe <sven(a)stfx.eu> wrote: >> >> >> Is there still a stack VM (PharoS for ARM, 5.0) ? > > I downloaded the one you linked (http://files.pharo.org/vm/pharoS/raspbian/latest.zip) but it was a pre-spur VM, so I had to use 50496 from the "preSpur" folder. > It didn't recognize the -nodisplay parameter, so I had to open image normally to do tinyBenchmarks. > Performance was fairly bad compared to Cog Spur (34M bytecodes, 2M sends), and in general not suitable for live editing of a Pharo image at all (8 seconds to open a browser, etc), so if a newer does not exist, I doubt it makes sense to spend effort creating one that reads Spur images other than as an intellectual exercize with a Cog VM available. > > Cheers, > Henry > > Version infos of vms I've ran, in order of age: > > http://www.mirandabanda.org/files/Cog/VM/VM.r3427/cogspurlinuxhtARM-15.33.3… : > > ./phcogspurlinuxhtRPi/pharo -version > 5.0-201610142319 Sat Oct 15 02:45:47 UTC 2016 gcc 4.9.2 [Production Spur VM] > CoInterpreter VMMaker.oscog-eem.1959 uuid: 2784931a-d7ba-431a-be8c-ec79b1e55684 Oct 15 2016 > StackToRegisterMappingCogit VMMaker.oscog-eem.1959 uuid: 2784931a-d7ba-431a-be8c-ec79b1e55684 Oct 15 2016 > VM: 201610142319 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $ Date: Sat Oct 15 00:19:53 2016 +0100 $ > Plugins: 201610142319 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $ > Linux testing-gce-874b9d32-9a0b-447e-98d4-15ee5b4feaec 4.4.0-42-generic #62~14.04.1-Ubuntu SMP Fri Oct 7 23:15:48 UTC 2016 armv7l GNU/Linux > plugin path: ./phcogspurlinuxhtRPi/lib/pharo/5.0-201610142319 [default: /home/veloxit/phcogspurlinuxhtRPi/lib/pharo/5.0-201610142319/] > > Included by nuscratch: > > squeak -version > 5.0-201608180858 Mon Aug 22 18:41:57 PDT 2016 gcc 4.9.2 [Production Spur VM] > CoInterpreter VMMaker.oscog-cb.1919 uuid: 00a8dd2a-bc8d-4552-b400-be781c8aabec Aug 22 2016 > StackToRegisterMappingCogit VMMaker.oscog-cb.1919 uuid: 00a8dd2a-bc8d-4552-b400-be781c8aabec Aug 22 2016 > VM: 201608180858 tim@Diziet.local:Documents/Squeak/Rasbian-VM/vm $ Date: Thu Aug 18 10:58:48 2016 +0200 $ > Plugins: 201608180858 tim@Diziet.local:Documents/Squeak/Rasbian-VM/vm $ > Linux Pi-3B-1 4.4.9-v7+ #884 SMP Fri May 6 17:28:59 BST 2016 armv7l GNU/Linux > plugin path: /usr/lib/squeak/5.0-201608180858 [default: /usr/lib/squeak/5.0-201608180858/] > > http://files.pharo.org/vm/pharoS/raspbian/latest.zip : > > ./PharoS/PharoS --version > 3.9-7 #1 Thu Apr 9 14:59:10 CEST 2015 gcc 4.6.3 [Production ITHB VM] > StackInterpreter VMMaker.oscog-jeanbaptistearnaud.828 uuid: ba8d2ed6-70b9-4309-8bf0-9eda9c0d1c2d Apr 9 2015 > https://github.com/pharo-project/pharo-vm.git Commit: 32d18ba0f2db9bee7f3bdbf16bdb24fe4801cfc5 Date: 2015-03-24 11:08:14 +0100 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #128 > Linux pharo-contribution-raspberrypi-linux 3.2.0-58-generic #88-Ubuntu SMP Tue Dec 3 17:37:58 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux > plugin path: /home/veloxit/PharoS/ [default: /home/veloxit/PharoS/] > > squeak.old (aka squeak , without nuscratch installed) (shell script doesn't forward to actual vm if not provided image path, hence the absolute): > > /usr/lib/squeak/4.10.2-2614/squeakvm -version > 4.10.2-2614 #1 XShm Sat Nov 8 01:32:22 UTC 2014 /usr/bin/cc > Linux bm-wb-01 3.16-trunk-armmp #1 SMP Debian 3.16-1~exp1 (2014-08-09) armv7l GNU/Linux > plugin path: /usr/lib/squeak/4.10.2-2614/ [default: /usr/lib/squeak/4.10.2-2614/] >

Oct. 19, 2016

Re: [Pharo-users] Default working directory

by wvzuilen

I've tried that. Like this: FileSystem disk workingDirectoryPath: Path / 'Users/myusername/Desktop'. As expected it changes my working directory, but the test mentioned in my first post still fails. ?!? -- View this message in context: http://forum.world.st/Default-working-directory-macOS-tp4919393p4919408.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Oct. 19, 2016

Re: [Pharo-users] Default working directory

by Vitor Medina Cruz

Esteban, yes, I could use save as..., its pretty much the same thing, no? On Wed, Oct 19, 2016 at 3:16 PM, Vitor Medina Cruz <vitormcruz(a)gmail.com> wrote: > Ahh, look, FileSystem has a workingDirectoryPath:, you could change the > working directory using that. > > On Wed, Oct 19, 2016 at 3:06 PM, Vitor Medina Cruz <vitormcruz(a)gmail.com> > wrote: > >> I suppose you should do that, I am relatively new to Pharo either, and a >> Windows user (by force, not because I want, lets be clear :) ), but in a >> Mac or Linux I think I would use try Pharo Launcher, where you can manage >> you images. In windows I create a new directory and copy the default image >> there. >> >> On Wed, Oct 19, 2016 at 2:46 PM, wvzuilen <wvzuilen(a)gmail.com> wrote: >> >>> In the default Pharo macOS download the image file is embedded inside the >>> Pharo.app package. Are you suggesting that I use a separate image file >>> that >>> I place at a location where I can write files? >>> >>> >>> >>> -- >>> View this message in context: http://forum.world.st/Default- >>> working-directory-macOS-tp4919393p4919403.html >>> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >>> >>> >> >

Oct. 19, 2016

Re: [Pharo-users] Default working directory

by Vitor Medina Cruz

Ahh, look, FileSystem has a workingDirectoryPath:, you could change the working directory using that. On Wed, Oct 19, 2016 at 3:06 PM, Vitor Medina Cruz <vitormcruz(a)gmail.com> wrote: > I suppose you should do that, I am relatively new to Pharo either, and a > Windows user (by force, not because I want, lets be clear :) ), but in a > Mac or Linux I think I would use try Pharo Launcher, where you can manage > you images. In windows I create a new directory and copy the default image > there. > > On Wed, Oct 19, 2016 at 2:46 PM, wvzuilen <wvzuilen(a)gmail.com> wrote: > >> In the default Pharo macOS download the image file is embedded inside the >> Pharo.app package. Are you suggesting that I use a separate image file >> that >> I place at a location where I can write files? >> >> >> >> -- >> View this message in context: http://forum.world.st/Default- >> working-directory-macOS-tp4919393p4919403.html >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >> >

Oct. 19, 2016

Re: [Pharo-users] Default working directory

by Esteban Lorenzano

you cannot do a âsave asâ¦â and use it later? > On 19 Oct 2016, at 18:46, wvzuilen <wvzuilen(a)gmail.com> wrote: > > In the default Pharo macOS download the image file is embedded inside the > Pharo.app package. Are you suggesting that I use a separate image file that > I place at a location where I can write files? > > > > -- > View this message in context: http://forum.world.st/Default-working-directory-macOS-tp4919393p4919403.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Oct. 19, 2016

Re: [Pharo-users] Default working directory

by Vitor Medina Cruz

I suppose you should do that, I am relatively new to Pharo either, and a Windows user (by force, not because I want, lets be clear :) ), but in a Mac or Linux I think I would use try Pharo Launcher, where you can manage you images. In windows I create a new directory and copy the default image there. On Wed, Oct 19, 2016 at 2:46 PM, wvzuilen <wvzuilen(a)gmail.com> wrote: > In the default Pharo macOS download the image file is embedded inside the > Pharo.app package. Are you suggesting that I use a separate image file that > I place at a location where I can write files? > > > > -- > View this message in context: http://forum.world.st/Default- > working-directory-macOS-tp4919393p4919403.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

Oct. 19, 2016

Re: [Pharo-users] CodeGenerator, your opinions?

by Johan Fabry

Sorry, I did not catch this thread before. If you are looking for a terse way to describe state machines, you may want to have a look at LRP, a live programming language for nested state machines (for robotics), implemented in Pharo. It seems to have what you are talking about in your mail. It is made for robotics, but in the end can be used for a lot more stuff since it has a clean integration with Pharo. The URL of LRP is http://pleiad.cl/LRP If you have any questions, feel free to ask! -- Does this mail seem too brief? Sorry for that, I donât mean to be rude! Please see http://emailcharter.org . Johan Fabry - http://pleiad.cl/~jfabry PLEIAD and RyCh labs - Computer Science Department (DCC) - University of Chile > On 19 Oct 2016, at 00:44, Otto Behrens <otto(a)finworks.biz> wrote: > > I just meant some syntactically terse way of expressing a state > machine so that one can see the logic clearly. Representing a state > machine in a graphical way is ideal. We did this once, but the problem > is to make the state machine definition resilient to refactorings and > changes to the code. What I mean is that compiling something into code > is a one way thing; to keep it maintained, one would like to "reverse > compile" and draw the state machine from code. > > A "correct" DSL would be something like a Harel state diagram, which > should be able to express most requirements.

Oct. 19, 2016

Re: [Pharo-users] Default working directory

by wvzuilen

In the default Pharo macOS download the image file is embedded inside the Pharo.app package. Are you suggesting that I use a separate image file that I place at a location where I can write files? -- View this message in context: http://forum.world.st/Default-working-directory-macOS-tp4919393p4919403.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Oct. 19, 2016

Re: [Pharo-users] Default working directory

by Vitor Medina Cruz

I think it defaults to where you image is, but you can inspect FileSystem workingDirectory in Playground and see for yourself :) On Wed, Oct 19, 2016 at 1:51 PM, wvzuilen <wvzuilen(a)gmail.com> wrote: > Hi all, > > I'm new to Smalltalk and Pharo, so be kind ;-) I've tried Google and > searching the world.st forum but I couldn't find the answer to the > following > question: > > I looks like the default working directory of my MacOS Pharo instance is a > path inside the Pharo5.0.app: > /Applications/Pharo5.0.app/Contents/Resources > > This causes that Pharo can't write to that path and soms default tests are > trying to do exactly that: > > testFileExists > | file | > file := File named: 'asd.txt'. > file writeStream close. > self assert: file exists. > file delete > > Of course I could edit the tests, but I would rather change the default > working directory. Is this possible? > > Greetings Wouter > > > > -- > View this message in context: http://forum.world.st/Default- > working-directory-tp4919393.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

Oct. 19, 2016