February 2012 - Pharo-users

Re: [Pharo-users] [Pharo-project] Who is using Fuel?
by Norbert Hartl Feb. 28, 2012

Feb. 28, 2012

Am 28.02.2012 um 19:15 schrieb Yanni Chiu: > On 28/02/12 11:03 AM, Norbert Hartl wrote: >> >> I first used image persistence but the image grow to large. Then I added >> fuel as journal to be written before image save in order to be able to >> recover from an emergency. >> Now we redo the persistence part. An account object graph is dissected >> into configuration part and payload part. The payload is written >> directly to mongo db in a Json format. The configuration part will be >> written as fuel blob to mongo. Planned is that at startup a configured >> amount of account fuel blobs are loaded and started. Those >> configurations have their own proces ses that write back payload to >> mongo. Etc. > > That's similar to what I do, except no image save and no mongo db. > As soon as the fuel blobs are in mongo (or on disk) no image save is needed then and I will start fresh everytime which is more reliable. Mongo is quite nice because I have a few hundred megabytes of data. And via cron it runs a map/reduce task to create the statistics about the data that has been fetched. The statistical data is displayed in charts on the web site again. Norbert > Here's how it goes: > - on restart the image reconstructs a Pier kernel saved via Fuel to a file > - included in the Pier kernel is what you're calling the "configuration part" - there are custom (non-std Pier) components here. > - the components in the reconstructed image can read/write a "payload" part, which is serialized to files using Fuel and SandstoneDb. > - additionally, a "sub-tree" of the Pier kernel can be exported to a file using Fuel serialization, and later imported using Fuel deserialization. > > No URL available at the moment. > > Aside - before Fuel/SandstoneDb, I was using Glorp/PostgreSQL. I've gained a lot of simplicity, but lost sequence numbers and object caching (and maybe more things, that have not been a problem so far). I've written a seqno replacement, but the lack of object caching is not a problem at the moment (i.e. small data sets, so far). > >

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Segmentation fault
by Bernat Romagosa Feb. 28, 2012

Feb. 28, 2012

Hi list, We're getting this segfault from time to time: http://hastebin.com/kuvefebuhe.sm The crashes appear to happen randomly, we haven't been able to find out what kind of behavior triggers them. Here's the machine specs: Smalltalk vmVersion 'Croquet Closure Cog VM [CoInterpreter VMMaker-oscog-IgorStasenko.123]' Smalltalk version 'Pharo1.3' Smalltalk osVersion 'linux-gnu' The Pharo image is a standard One-Click, and the OS is a Debian testing. Hope you can help us see what's going on... Thanks! -- Bernat Romagosa.

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Who is using Fuel?
by Mariano Martinez Peck Feb. 28, 2012

Feb. 28, 2012

Of course, not the fuel you use to go to work every day ;) I am talking about Fuel serializer. In particular, I wonder if our page deserves an update: rmod.lille.inria.fr/web/pier/software/Fuel/Software-using-Fuel Let me know if there is something I should add. Thanks, -- Mariano http://marianopeck.wordpress.com

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Re: [Pharo-users] [Pharo-project] Nautilus version 4.0.4
by Mariano Martinez Peck Feb. 26, 2012

Feb. 26, 2012

On Sun, Feb 26, 2012 at 7:04 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > > > On Sun, Feb 26, 2012 at 6:57 PM, Sven Van Caekenberghe <sven(a)beta9.be>wrote: > >> Ben, >> >> On 26 Feb 2012, at 18:28, Benjamin wrote: >> >> > Hi guys, >> > >> > I really want to thank you all for your feedbacks which give me the >> will to always add cool features to Nautilus. >> > >> > Thanks to that, let me introduce the new stable version with some new >> features: >> > >> > - better groups (now the granularity is method and no longer class) >> > - better algorithm for coloring protocols and methods >> > - more menu entries and shortcuts >> > - Monticello integration >> > - OCompletion integration >> > - a lot of new icons :) >> > >> > (and some cleans in the code but ^^) >> > >> > >> > Thanks every one for your good energy :) >> > >> > >> > Ben >> >> Great! >> >> Can you put up a page somewhere describing the official way to get >> Nautilus with all its goodies loaded or how to update it correctly ? I know >> there is the CI image, but there seems to be some confusion around the >> ConfigurationOfNautilus. >> >> > I have a blog post in the owen...but just a little piece ;) > > As promise, here it is: http://marianopeck.wordpress.com/2012/02/26/nautilus-the-reborn-of-the-syst… Ben, don't forget to cc pharo-users ;) Cheers > > Gofer it > url: 'http://ss3.gemstone.com/ss/Nautilus'; > package: 'ConfigurationOfNautilus'; > load. > > (Smalltalk at: #ConfigurationOfNautilus) loadRelease. > > > >> Thx, >> >> Sven >> >> >> > > > -- > Mariano > http://marianopeck.wordpress.com > > -- Mariano http://marianopeck.wordpress.com

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Re: [Pharo-users] Sounds / Silence
by Marcus Denker Feb. 24, 2012

Feb. 24, 2012

Hi, This bug report might be related: Issue 5250: Clicking on sound in Setting does not anything http://code.google.com/p/pharo/issues/detail?id=5250 On Mon, Feb 20, 2012 at 9:14 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > vincent > > which vm are you using? > On which OS are you? > Because on mac lion I used the cocoa blessed VM and it works that is on jenkins. Now on 64 bits I do not know. > > Stef > > On Feb 19, 2012, at 10:26 PM, Vincent Lesbros wrote: > >> Hi, >> >> I am new to Pharo, >> I try to get a sound from the SoundPlayer. >> >> I use : Pharo-1.3-13315-OneClick.app >> >> I did : >> Â BaseSoundSystem soundEnabled: true >> >> I create an instance of AbstractSound, from the beep example, or an instance ofPluckedSound... whatever. >> And, when I send the message play, >> the primitive to play the sound fails. >> >> primSoundStartBufferSize: bufferSize rate: samplesPerSecond stereo: stereoFlag >> Â Â Â "Start double-buffered sound output with the given buffer size and sampling rate. This version has been superceded by primitive 171 (primSoundStartBufferSize:rate:stereo:semaIndex:)." >> Â Â Â "ar 12/5/1998 Turn off the sound if not supported" >> Â Â Â <primitive: 'primitiveSoundStart' module: 'SoundPlugin'> >> Â Â Â SoundSupported := false. >> La primitive Ã©choue et le flag SoundSupported est remis Ã false. >> >> My environnemt is windows 7 64bits, >> I do have a sound card !! >> >> >> Where is the good plugin and how should I activate it ? >> >> thanks, >> >> VL. >> >> > > -- -- Marcus DenkerÂ --Â denker(a)acm.org http://www.marcusdenker.de

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fun with NBOpenGL
by StÃ©phane Ducasse Feb. 22, 2012

Feb. 22, 2012

Igor coded with me one hour to show me step by step how to produce a rotating pyramid in Pharo :) Have fun (igor will update the configurationOfNBOpenGL to load the latest file).

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Sounds / Silence
by Vincent Lesbros Feb. 22, 2012

Feb. 22, 2012

Hi, I am new to Pharo, I try to get a sound from the SoundPlayer. I use : Pharo-1.3-13315-OneClick.app I did : BaseSoundSystem soundEnabled: true I create an instance of AbstractSound, from the beep example, or an instance ofPluckedSound... whatever. And, when I send the message play, the primitive to play the sound fails. *primSoundStartBufferSize: bufferSize rate: samplesPerSecond stereo: stereoFlag* "Start double-buffered sound output with the given buffer size and sampling rate. This version has been superceded by primitive 171 (primSoundStartBufferSize:rate:stereo:semaIndex:)." "ar 12/5/1998 Turn off the sound if not supported" <primitive: 'primitiveSoundStart' module: 'SoundPlugin'> *SoundSupported := false.* La primitive Ã©choue et le flag *SoundSupported est remis Ã false.* * * *My environnemt is windows 7 64bits,* *I do have a sound card !! * * * * * *Where is the good plugin and how should I activate it ?* * * *thanks,* * * *VL.* * * * *

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Feb. 21, 2012

since this will interest some of you :) Begin forwarded message: > From: Ricardo Moran <richi.moran(a)gmail.com> > Subject: Re: [Pharo-users] pharo & arduino > Date: February 21, 2012 6:33:28 PM GMT+01:00 > To: GÃ©rard Duteil <linedubeth(a)free.fr> > Cc: StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > > > On Mon, Feb 20, 2012 at 8:28 PM, GÃ©rard Duteil <linedubeth(a)free.fr> wrote: > Bonsoir Ã tous, > > Je ne savais que l'on pouvais faire tourner les physical etoys dans pharo, j'utilisais Squeak > > > Plus gÃ©nÃ©ralement je cherche des liens sur les pic, les microcontroleurs et une interface graphique en glisser deposer qui me permette de dialoguer avec de l'Ã©lectronique sous linux. Sous win j'ai des outils mais je prefere l'utilisation de gnu/linux > > je suis tombÃ© sur un lien ancien smalltalk/pic mais j'aimerais bien trouver un projet plus rÃ©cent et maintenu. > > Je vais donc essayer le lien merci > > et je viens de retomber sur le lien qui m'a fait redÃ©couvrir les etoys > > Merci > Au plaisir de vous lire > > Hello, > > Hi GÃ©rard, > > I don't know that physical etoys runs in pharo. I use Squeak and install pe in ubuntu. > > Well, the "Etoys" part of Physical Etoys doesn't run on Pharo, but all the core classes should work fine. I don't know exactly what you need so let me tell you what we did: > We made a very simple model that lets you communicate with your Arduino using a firmware like Firmata, or a simple firmware made by us (see the class comment of the class Arduino for code examples). We also made a very rudimentary C code generator to translate Smalltalk into C and we linked it to the avr-gcc/avrdude so now we can program the Arduino board without leaving Smalltalk, which is very cool. Unfortunately, the translator is still very limited (I think even more limited than Slang) but we are using it to translate the etoys scripts and it's good enough for our purposes. > > > I search more links about pic, electronics and gui with drag and drop to program this electronic's component for kids. I prefer use gnu/linux. > > If you're interested in a graphical interface for kids maybe you'll be better working with the Physical Etoys version instead of using the sources with Pharo. FWIW, making a graphical interface shouldn't be difficult at all but the Etoys interface is being used with kids and it's quite good IMHO. > > > But i don't know your project i use your link > sorry http://tecnodacta.com.ar/gira/projects/physical-etoys/ is my last tool > > > You'll find there the latest version of Physical Etoys, we are soon to release a new version with a lot of improvements. So stay tuned! :) > > > tanks too much for your proposition. sorry i don't speak spanish language but if necessary i transfert your message. > > > I have found a commercial tool s4a. Do you know this? > > Yes, in fact I had the luck to meet its creators in person during the ESUG 2010 conference. S4A is a great tool, and the Scratch interface is very nice. You should definitely give it atry. > > > i have download this http://seaside.citilab.eu/S4ADev.zip > > but i'm a beginner. > > i'm interresting by pharo because it's le lastest program developping, isn'it? > > I'm not sure what that means. We usually don't use Pharo to develop Physical Etoys because, you know, Etoys doesn't run in Pharo. However, I would like to ensure at least some of our project works in Pharo. If I can, I'll test it this week and maybe I'll write a ConfigurationOfArduino. Would that help? > > Cheers, > Richo > > > > thanks a lot > > > > > Le 20/02/2012 09:16, StÃ©phane Ducasse a Ã©crit : > thanks for you answer > I hope that you are going well. > > Stef > > On Feb 20, 2012, at 12:15 AM, Ricardo Moran wrote: > > Hi Stef, > > You can look at the Arduino repository at squeaksource (http://www.squeaksource.com/Arduino.html) > Everything but the "Arduino-Etoys*" packages should work fine in Pharo. At least they worked the last time I checked but a lot has changed since then, so let me know if you encounter any problem, I'll be happy to help. > > Cheers, > Richo > > On Sat, Feb 18, 2012 at 6:15 PM, StÃ©phane Ducasse<stephane.ducasse(a)inria.fr> wrote: > Hi ricardo > > do you have some information how to connect pharo to arduino? > Thanks in advance. > > Stef > > Begin forwarded message: > > From: GÃ©rard Duteil<linedubeth(a)free.fr> > Subject: [Pharo-users] pharo& arduino > > Date: February 18, 2012 9:42:02 AM GMT+01:00 > To: pharo-users(a)lists.gforge.inria.fr > Reply-To: A friendly place where any question about pharo is welcome<pharo-users(a)lists.gforge.inria.fr> > > Hello,,,I search info about this subject., > ,I'm interesting by picaxe also,,,, > A beginner in object programmation,,, > I wait the 25th may,,, > Thanks in advance. > > > > > >

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Feb. 20, 2012

HI since this can interest other peopleâ¦. Begin forwarded message: > From: Ricardo Moran <richi.moran(a)gmail.com> > Subject: Re: [Pharo-users] pharo & arduino > Date: February 20, 2012 12:15:07 AM GMT+01:00 > To: StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > Cc: linedubeth(a)free.fr > > Hi Stef, > > You can look at the Arduino repository at squeaksource (http://www.squeaksource.com/Arduino.html) > Everything but the "Arduino-Etoys*" packages should work fine in Pharo. At least they worked the last time I checked but a lot has changed since then, so let me know if you encounter any problem, I'll be happy to help. > > Cheers, > Richo > > On Sat, Feb 18, 2012 at 6:15 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > Hi ricardo > > do you have some information how to connect pharo to arduino? > Thanks in advance. > > Stef > > Begin forwarded message: > > > From: GÃ©rard Duteil <linedubeth(a)free.fr> > > Subject: [Pharo-users] pharo & arduino > > Date: February 18, 2012 9:42:02 AM GMT+01:00 > > To: pharo-users(a)lists.gforge.inria.fr > > Reply-To: A friendly place where any question about pharo is welcome <pharo-users(a)lists.gforge.inria.fr> > > > > Hello,,,I search info about this subject., > > ,I'm interesting by picaxe also,,,, > > A beginner in object programmation,,, > > I wait the 25th may,,, > > Thanks in advance. > > > >

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Package browser
by Vincent Lesbros Feb. 20, 2012

Feb. 20, 2012

I did not find how to get the OB Package Browser. My Browser displays categories, but not packages. in the top right menu of the Browser, item "Choose new default browser" I have only two choices : Browser OBSystemBrowserAdaptor In the book PBE1-2009-10-28.pdf "Pharo by Example " it is showned a OB Package Browser ... But how can I get it ? (I did read FAQ 5, p. 318.).

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