February 2012 - Pharo-users

funny idea Symbol vs. Selector
by stephane ducasse May 14, 2015

May 14, 2015

Hi guys I'm thinking aloud... I was wondering if we could not take advantage of a new class: Selector. MethodDict would only contain selectors and not symbols. I remember that I talked about that with hernan. Stef

8 27

Postmark email library
by Francois Stephany Aug. 31, 2013

Aug. 31, 2013

Hi guys, I've made a simple wrapper around the Postmark API. It lets you send emails without dealing with a SMTP server. You can read about it here: http://developer.postmarkapp.com/developer-libs.html http://developer.postmarkapp.com/developer-build.html and there: http://articles.tulipemoutarde.be/send-email-from-pharo-with-postmark It's pretty simple and naive implementation but it gets the job done. I'll add email attachements when I will need it. Francois

4 20

Package browser?
by Rob Vens June 28, 2013

June 28, 2013

I am attempting to do the Pharo by Example book, but a package browser (which is used in the examples) is not in the 1.1.1 or 1.2 image. Should I still use categories? If I create a package in Monticello browser I am not able to add classes or anything (not as far as I could see). Just starting out using Pharo, so apologies if these questions are already answered elsewhere.

12 22

Zinc crashes an image.
by Paul DeBruicker Sept. 25, 2012

Sept. 25, 2012

Hi - I'm pretty sure I'm having the same problem Phillipe had/described in this message: http://forum.world.st/Zinc-crashing-image-at-start-up-td3785797.html At least the PharoDebug.log is the same. It happens on both the most recent Cog and interpreter VM. Is there a way to recover from this? I could follow Sean's instructions from this thread if necessary: http://forum.world.st/Fwd-Oops-I-put-a-halt-in-a-startup-method-td3800729.h… Or is there a way to extract changes from a changes file for one image into another image? I'd rather fix the broken image but if its not possible I'd then just try to load those changes I don't have. Thanks for any guidance you can provide. Paul

4 3

Nearly limitless Image: revisited
by James Foster Feb. 29, 2012

Feb. 29, 2012

Hi Ted, You have done a good job of describing what GemStone/S 64 Bit provides. Your 'image' size is essentially limited to disk that can be connected to one machine. Collection classes have been enhanced with B-Tree indexes that are automatically updated when objects are modified. Multiple VMs can connect to the same image and each is provided with a consistent (isolated) view. Views are updated at transaction boundaries. Updates are done in a transaction with each transaction recorded to a separate log for disaster recovery. There is no need for an external database, since you have a persistent, transactional image that can be shared across multiple machines. Existing users have images of hundreds of GB in size with hundreds of VMs. Check it out at http://seaside.gemstone.com/. James > I've brought this up before, but it seems nobody is interested in this > topic.. why? > > it's about image size. > > ... > > Anyway, IMHO this very limited storage violates the Smalltalk-all-in-one > image ideal, > because with this limited storage one cannot avoid the use of external > data stores > like databases (of course, exception: there always will be import an > export of objects/data) > > External data storage is complex, unreliable and should be something of > the past. > I'd suggest: don't waste time with this. rather improve the Smalltalk > internal data handling. > > I wish to have a very large image so e.q. I can have an entire > company's administration > (client and accounting data etc.) alive in it. > I want to use Collections and descendants, not external databases. > So, everything within the image. > > The beautiful (although opinions may vary) principle > of a Smalltalk environment is Image Persistence, isn't it? > > IMHO this requires: > - virtually unlimited image memory size. > -no external databases like e.g. Mongo or DB2 whatever. > -no persistent external storage at all. > > -You should see the (currently still) faster database performance as a > challenge > to improve the Collection and other related data handling classes > > -You would have to completely restructure the architecture. > or just extend the address width: 64 bits? > > what about an image of virtually unlimited size > gigabytes so > > (for now, if it goes beyond the physical memory size (say 32 GB?) > one could use a VM that works with virtual storage based VM > Virtual storage was first in use successfully with IBM mainframes > in the 1970s (and still is) ) > > on the other hand, I estimate holographic? physical memory > going in Terabytes is about to be available in 5-10 years from now. > blindingly fast, compared with today's standards. > > So, one has about 5 years to come up with such a system :o) > if one does, Smalltalk is ahead of everything then.. > > Don't laugh. One didn't even dream of 4 gigabytes of memory > during the Commodore 64 era. 1982-1994. > > In short: what would have to be changed to enable this? > > Some thoughts and speculations? > Anyone for tennis? > > Thanks > Ted

1 0

Re: [Pharo-users] [Pharo-project] fun with NBOpenGL
by StÃ©phane Ducasse Feb. 29, 2012

Feb. 29, 2012

:) you seems to have fun after the lantronix XP. Stef On Feb 29, 2012, at 7:33 PM, Jean Baptiste Arnaud wrote: > <Screen shot 2012-02-29 at 7.31.10 PM.png>

1 0

Re: [Pharo-users] [Pharo-project] Nearly limitless Image: revisited.
by Marcus Denker Feb. 29, 2012

Feb. 29, 2012

On Feb 29, 2012, at 12:59 PM, Janko MivÅ¡ek wrote: > Hi Ted, > > I also support the image as a sole persistence idea and I'm actually > using it for years on VisualWorks. > > For Pharo there seems everyone is avoiding this idea, mostly because of > image corruption fear. Well, we need to improve the robustness of Pharo > image and VM then this fear will vanish. It is obviously doable, if VW > is reliable enough, why not once Pharo? > Someone needs to start fixing and improving. Why not, for example, you? Here is a link: http://code.google.com/p/pharo/issues/list It's much better than talking. Marcus -- Marcus Denker -- http://marcusdenker.de

4 3

Nearly limitless Image: revisited.
by ted f.a. van gaalen Feb. 29, 2012

Feb. 29, 2012

"I first used image persistence but the image grow too large.." thanks for reminding, Norbert. Hi all, perhaps you'll find me an idiot, I don't care. (i know that I am: (class SelfReflection :o) ) Nevertheless, some brainstorming here. I've brought this up before, but it seems nobody is interested in this topic.. why? it's about image size. Currently, Pharo 1.3-13315 at my 4 Gigabyte Debian amd64 Linux machine reports memory 75,392,160 bytes old 61,370,144 bytes (81.4%) young 2,169,692 bytes (2.9000000000000004%) used 63,539,836 bytes (84.30000000000001%) free 11,852,324 bytes (15.700000000000001%) (nothing peculiar added, just the Seaside package and a few classes of my own. ) So, if i understand this well I have only 11,8 megabytes to play with? To begin with: why is only 75 megabyte available in Pharo (or Squeak as well) when there is 4 gigabyte physical memory available on my machine?? Anyway, IMHO this very limited storage violates the Smalltalk-all-in-one image ideal, because with this limited storage one cannot avoid the use of external data stores like databases (of course, exception: there always will be import an export of objects/data) External data storage is complex, unreliable and should be something of the past. I'd suggest: don't waste time with this. rather improve the Smalltalk internal data handling. I wish to have a very large image so e.q. I can have an entire company's administration (client and accounting data etc.) alive in it. I want to use Collections and descendants, not external databases. So, everything within the image. The beautiful (although opinions may vary) principle of a Smalltalk environment is Image Persistence, isn't it? IMHO this requires: - virtually unlimited image memory size. -no external databases like e.g. Mongo or DB2 whatever. -no persistent external storage at all. -You should see the (currently still) faster database performance as a challenge to improve the Collection and other related data handling classes -You would have to completely restructure the architecture. or just extend the address width: 64 bits? what about an image of virtually unlimited size > gigabytes so (for now, if it goes beyond the physical memory size (say 32 GB?) one could use a VM that works with virtual storage based VM Virtual storage was first in use successfully with IBM mainframes in the 1970s (and still is) ) on the other hand, I estimate holographic? physical memory going in Terabytes is about to be available in 5-10 years from now. blindingly fast, compared with today's standards. So, one has about 5 years to come up with such a system :o) if one does, Smalltalk is ahead of everything then.. Don't laugh. One didn't even dream of 4 gigabytes of memory during the Commodore 64 era. 1982-1994. In short: what would have to be changed to enable this? Some thoughts and speculations? Anyone for tennis? Thanks Ted -- Ted F.A. van Gaalen Danketsweiler 608 D-88263 Horgenzell Germany T: +49 750 491 48 38 M: +49 151 587 862 47

5 4

ProfStef - syntax highlighting
by Markus Schlager Feb. 28, 2012

Feb. 28, 2012

Hi all, Is there any chance to get syntax highlighting back for ProfStef tutorials? Even ProfStef is black&white only in Pharo1.3. ProfStefBrowser has vanished already in 1.2. Could the helpbrowser or at least the SystemWindow used by ProfStef get an option for syntax highlighting? All this would be highly appreciated since ProfStef-tutorials are a nice way for writing course-material in order to teach Smalltalk at school. LedMorph and LedTimerMorph are great example-classes to start with teaching. I'm missing WatchMorph, though. Markus

5 9

pharo & arduino
by GÃ©rard Duteil Feb. 28, 2012

Feb. 28, 2012

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.

2 2

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). > >

1 0

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.

2 2

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

2 3

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

2 3

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

1 0

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).

1 0

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.* * * * *

3 15

Fwd: pharo & arduino
by StÃ©phane Ducasse Feb. 21, 2012

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. > > > > > >

1 0

Fwd: pharo & arduino
by StÃ©phane Ducasse Feb. 20, 2012

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. > > > >

1 0

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.).

2 1

Why do we use Pharo? a.k.a. rethinking Pharo marketing
by StÃ©phane Ducasse Feb. 19, 2012

Feb. 19, 2012

I would like to get from you why you use Pharo? After thinking a lot about that recently I think that I would like to have something like that: Pharo a plastic language to build evolvable and debuggable applications. With Pharo and its ecosystem you can build powerful tools (web application, data management, business processesâ¦). Pharo philosophy is driven by domain driven design. Modeling is agile. Pharo is an executable modeling language. Pharo is not only a language but an infrastructure with powerful tools like Moose. Plastic = "(in science and technology) of or relating to the permanent deformation of a solid without fracture by the temporary application of force." Pharo: ease of modeling, essence of agile, close to objects all the time. Stef

7 7

Memory
by Vincent Lesbros Feb. 19, 2012

Feb. 19, 2012

Hi What is the maximum size supported for Arrays in Pharo ? I have to manipulate a lot of Pixmaps and large sound files. for example : 30 minutes of 4 channel sounds in 32bit at 48000 Hz = 30 * 60 * 48000 * 4 * 4 = 1 382 400 000 bytes. 1 picture 3648 * 2736 pixels 24bits/pixel = 29 942 784 bytes. How many pictures can I load in memory ? My physical memory is 8 GB. VL.

1 0

how to edit http://book.pharo-project.org?
by Bernardo Ezequiel Contreras Feb. 18, 2012

Feb. 18, 2012

Hi all, is it possible to edit http://book.pharo-project.org/ ? if so, how is done? im asking because i would like to edit this section Logging Tools>>Simple Logger thanks.

3 5

Usable state PharoMorphicView
by S Krish Feb. 14, 2012

Feb. 14, 2012

Now I hope it should load and work fine for the first look at a simpler morphic UI construction.. Will hunker down and work on a plan.. this point onwards.. There is a bigger pie to cut .. n eat .. this is just a piece in the jigsaw or is replaced by a more competent piece.. but for now this is more complete and workable over the range of need.. http://skrishnamachari.wordpress.com/2012/02/14/pharo-morphic-view-03/ http://skrishnamachari.files.wordpress.com/2012/02/pharomorphicview_02.pdf

1 0

24-25 May 2012: Pharo conference registration is ready
by StÃ©phane Ducasse Feb. 13, 2012

Feb. 13, 2012

http://pharoconference.eventbrite.com/ The Pharo core team organises a Pharo Conference hosted at INRIA Lille Nord Europe located at Villeneuve D'ascq (close to Lille). Pharo is an open-source Smalltalk http://www.pharo-project.org The goals of the conference is to bring companies, developers and users together. You are invited to propose a talk on - your business with pharo - a technical presentation of a framework or solution you built with pharo - experience reports Please contact stephane.ducasse(a)inria.fr and marcus.denker(a)inria.fr for possible presentations. Stef

1 0

UITheme builder message: or UIManager default message:?
by Helene Bilbo Feb. 13, 2012

Feb. 13, 2012

I wonder which of these two possibilities to prefer and _why_: UITheme builder message: 'Hello Pharo'. UIManager default message: 'Hello Pharo.' I have seen both, also in the Pharo documentation... Thanks for any clarification, helene. -- View this message in context: http://forum.world.st/UITheme-builder-message-or-UIManager-default-message-… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 2

pi with 1000 digits
by Alain Rastoul Feb. 9, 2012

Feb. 9, 2012

Hi, Just for fun, to see how Smalltalk handles precision, 1000 decimals of pi in 10 lines of code. (arctan is redefined not to use floats, change 1000 to 100 for quick result, any variations welvome) in a workspace: | arctan pi | "arctan(x) using Taylor formula" arctan := [ :x :n | | r s | "x must be a fraction- n is the length of the serie" r := (0 to: n) inject: 0 into: [ :sum :k | sum + ((-1 raisedTo: k) * ( x raisedTo: ((2*k) + 1)) / ((2*k) +1)) ] . r ]. "pi using Machin formula" pi := (16* (arctan value: (1/5) value: 1000)) - (4*(arctan value: (1/239) value: 1000) ) asScaledDecimal: 1000. pi inspect. Cheers Alain

1 0

Updated Configuration packages for PharoMorphicView
by S Krish Feb. 9, 2012

Feb. 9, 2012

Details are posted in: http://skrishnamachari.wordpress.com/2012/02/09/pharo-morphic-view-framewor… hopefully cleaner and easier for anyone to load and check out.. PharoMorphicView-Core-App : is a basic package and PharoMorphicView is the full pack. Trying to now wade through the Specs / Presenty / existing capabilities which I can merge with but overall very interesting first time run up with Morphic Experimental Run, but quite usable overall.... plugs in hand in glove with existing primitive morphs. Easy too to get some newbies started with Morphic UIs.. PS: Once comment was nice to hear.. Few new trainees found working in Pharo easier than starting up with VisualAge.. !..

1 0

Feb. 9, 2012

Hi guys after compiling all your answers and checking with the local constraints: Rooms and others like free days we will organize the Pharo conference the 24-25 May. We would need some help for setting up a simple web site for registration. Stef

1 0

[COTDC] 107 - CommentNode
by sean＠clipperadams.com Feb. 8, 2012

Feb. 8, 2012

106 classes done 537 classes remaining Continuing in Compiler... Today: CommentNode Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest p.s. this message was sent from a pharo image. Did you know you could easily do that?!

1 0

[COTDC] 106 - ZipWriteStream
by sean＠clipperadams.com Feb. 8, 2012

Feb. 8, 2012

After a little break ;-) This is the last class in Compression. After this one, I will bundle up the comments so far and commit them for 1.4! 105 classes done 792 classes remaining Continuing in Compression... Today: ZipWriteStream Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest p.s. this message was sent from a pharo image. Did you know you could easily do that?!

1 0

[ANN] Kiwi: BDD tool for Pharo
by Nahuel Garbezza Feb. 7, 2012

Feb. 7, 2012

Hi all, I started to work with this a few months ago. Kiwi is a Behaviour-Driven development tool, inspired on Cucumber (http://cukes.info) Here's the SqueakSource project url: http://ss3.gemstone.com/ss/Kiwi.html And here is a blog post explaning the basics of the tool: http://nahuelgarbezza.com.ar/2012/02/getting-started-with-kiwi/ Kiwi is still under development and I hope to get a stable release soon. Any feedback would be appreciated :) Thanks, Nahuel.

2 1

Pharo Morphic View Application Framework
by S Krish Feb. 4, 2012

Feb. 4, 2012

http://skrishnamachari.wordpress.com/2012/01/31/pharo-application-framework… Obliged for feedback ... For details and links.. Sharing this little framework that should go some way to ease creating large applications ( currently morphic oriented). AbstractMorphicView subclass: #MyNewView â¦ #createMorphsSpecs ^{ âpanel1â² -> #SomeOtherView. âlabel1â² -> #LabelMorph. âtext1â² -> #PluggableTextMorph. âbutton1â² -> #PluggableButtonMorph. } layoutSpecsArray ^{ âwidgetNameInMorphsDictionaryâ -> { #fractions -> (0 @ 0 corner: 1 @ 0.5). â fractional value 0 to 1 range â #offsets -> (10 @ 10 corner: 0 @ 0). â offsets relative to the fractional position â }. ââ¦ add other widgetspecsâ¦â } Thats it.. you should have a prototype UI neatly laid out.. and then specify: #morphsPrimaryPropertiesSpecs and #morphsSecondaryPropertiesSpecs for full functionality that composes views inside views and scales well. AbstractSimpleMorphicView can make it simpler for TableLayout stuff without requiring #layoutSpecsArray. ..... the main post has other details and links to package...

5 11

Text morph with line numbers?
by Nahuel Garbezza Feb. 2, 2012

Feb. 2, 2012

Hi all, Is there any text morph that shows line numbers? I mean something like that: http://developer.qt.nokia.com/doc/qt-4.8/images/codeeditor-example.png Nahuel

6 9

Oops
by Werner Kassens Feb. 2, 2012

Feb. 2, 2012

Hi, i was loading something from a directory into an old 1.1 image via monticello and then it said things like updating pharoinbox and updating whatever. i tried to stop that but it was not possible so i shut down my computer. i am not sure what i should do? please excuse werner

1 0

Feb. 2, 2012

Hi guys We want to organize a Pharo Conference @ lille around business and companies in May/June 2012. Now we need you to understand what is the best to organize because we have some constraints (like not good access to rooms on saturday). Could you reply to the following questions: Are you planning to attend: Yes No Would you attend two days: Yes No Would you like to present something: Yes No Would you prefer to have (remove the one you do not like) - one friday and one saturday or - two days during the week would be not a problem. Would you like to have Handons: Yes No Business/Experience returns: Yes No What are the following dates that are ok for you? Frid 11- Satur 12 May 2012: Yes No Thur 10- Frid 11 May 2012: Yes No Mond 14- Tuesd 15 May 2012: Yes No Tuesd 15- Wedn 16 May 2012: Yes No Thur 24 - Frid 25 May 2012: Yes No Frid 25- Satur 26 May 2012: Yes No Stef

3 3