February 2011 - 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

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

permutations / combinations implementation
by Tudor Girba Nov. 2, 2011

Nov. 2, 2011

Hi, Is there an implementation of permutations and combinations of a collection? Cheers, Doru -- www.tudorgirba.com "Presenting is storytelling."

2 1

Z3950 on OSX: module yaz3 not found
by laurent laffont April 25, 2011

April 25, 2011

Hi, I want to use http://www.squeaksource.com/Z3950 Following install instructions, I've dowloaded yaz sources (I've tried 4.1.2 and 3.0.52) as it seems there's no binary for OSX, ./configure && make && make install. Then using latest Seaside One Click image I've copied /usr/local/lib/*yaz* in Seaside.app/Contents/MacOS $ ls ~/Downloads/Seaside.app/Contents/MacOS/ Squeak VM Opt libyaz.a libyaz.la libyaz_icu.a libyaz_icu.la libyaz_server.a libyaz_server.la libyaz.3.dylib libyaz.dylib libyaz_icu.3.dylib libyaz_icu.dylib libyaz_server.3.dylib libyaz_server.dylib But then I have a External Module Not Found on YAZPQFFFILibrary>>createParser " YAZPQDFFILibrary default createParser " <cdecl: YAZPQFParser 'yaz_pqf_create' (void) module: 'yaz3'> ^ self externalCallFailed Any hint ? Cheers, Laurent Laffont -- FFI newbie Pharo Smalltalk Screencasts: http://www.pharocasts.com/ Blog: http://magaloma.blogspot.com/

5 8

Help (perfect for newcomers) migrating a technical FAQ
by Mariano Martinez Peck April 9, 2011

April 9, 2011

Hi folks. I had a good idea and and it perfect for someone that wants to help and don't know how. It is not the most entertained task, but I promise you will learn a lot. Mostly, if you are newcomer. The idea is basically to migrate the FAQ that is here: http://scg.unibe.ch/wiki/faq/pharofaq to a new section in the collaborative Pharo book: http://book.pharo-project.org/ So....any takers ? Let us know so that we generate a new user in the Book The idea is also to check whether what is says is still correct for pharo or if it needs an update. Or even how to improve it (from the view of a newcomer). Thanks Mariano

2 2

Re: [Pharo-users] Simple plugin for Jenkins to run Pharo/Squeak VM images
by Marcus Denker March 7, 2011

March 7, 2011

On Feb 28, 2011, at 3:49 PM, StÃ©phane Ducasse wrote: > thanks panu > > did you see that we are heavily using hudson? > Is your code different? > We are actually not using a plugin but just call shell scripts on the server. (we use Lukas' scripts https://github.com/renggli/builder ) I know that Philippe did a plugin, too. I always wanted to look at how a plugin can even simplify the setup... (especially for simple cases), but this has been pushed down the TODO list... Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

4 7

Re: [Pharo-users] Is there a metric server for Pharo
by Panu Suominen March 1, 2011

March 1, 2011

2011/2/28 Marcus Denker <marcus.denker(a)inria.fr>: > There is Moose: > It has all the code for calculating metrics. (and to do visualizations based on them) I know. But the results should be stored somewhere to be publicly viewable. Preferably version information is attached to the metrics enabling monitoring if problems get fixed or introduced. > We are actually developing a reporting dashboard thing for the pharo code base... > maybe Cyrille can tell more? OK. I would like to know more. :)

4 4

rounding errors
by t olschewski March 1, 2011

March 1, 2011

Hi, using formatted number output recently I got the following output: 1.0 printPaddedWith: $0 to: 2.1. "'01.0'" 1.0 printPaddedWith: $0 to: 2.2. "'01.00'" 1.0 printPaddedWith: $0 to: 2.3. "'01.00'" <-- wrong 1.0 printPaddedWith: $0 to: 2.4. "'01.000'" <-- wrong 1.0 printPaddedWith: $0 to: 2.5. "'01.00000'" running Float>>printPaddedWith:to: in the debugger showed me that the reason of this odd behaviour seems to be produced by Float>>truncated and/or Float>>fractionPart. I can provoke errors of that kind even easier: (2.3 fractionPart * 10) truncated. => "2" (instead of 3) In Primitive 51 (primitiveTruncated for Float>>truncated) I read frac = modf(rcvr, &trunc); so the problem looks like an issue with rounding errors in Math-Library's modf function. Indeed, I can reproduce the odd result of "(2.3 fractionPart * 10) truncated." in C++ using modf: // g++ -lm truncate.cpp && ./a.out #include<iostream> #include<cmath> using namespace std; int main(){ double f1, f2, f3; modf(10 * 0.3, &f1); cout << f1 << endl; modf(10 * modf(2.3, &f2), &f3); cout << f3 << endl; } // output: // 3 (ok) // 2 (error - should be 3) Question: what can be done about this? As a matter of fact, several important methods spread over a number of classes (Float, Number, Morph ... being among them) are senders of Float>>truncated or Float>>fractionPart, so rounding errors in primitive 51 or 52 could provoke unexpected behaviour in surprising places. -- View this message in context: http://forum.world.st/rounding-errors-tp3327130p3327130.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 4

Deleting an instance
by DougEdmunds Feb. 28, 2011

Feb. 28, 2011

Is there a way to delete/remove/kill an instance other than by quitting and starting Pharo up again? In my example, I installed the ContactListEditor package from http://www.pharocasts.com/2011/02/pharo-gui-with-polymorph.html After several "ContactListEditor open" doIts, I closed most of the windows. I inspected "ContactListEditor allInstances" and it has an array of instances, one for each 'doIt'. The instances are still 'alive', including those whose windows were closed. If I save and quit Pharo, and restart it, the only instances that are alive are the ones that have open windows. -- View this message in context: http://forum.world.st/Deleting-an-instance-tp3328590p3328590.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 2

Re: [Pharo-users] Is there a metric server for Pharo
by Marcus Denker Feb. 28, 2011

Feb. 28, 2011

On Feb 28, 2011, at 4:58 PM, Panu Suominen wrote: > This time I ask before implementing something that has already been done. :) > > I know there are quite good tools for metrics and code quality > control. However I don't know if there is any software to publish > these kind of results. In Java world there is Sonar > (http://www.sonarsource.org/) So, are there any tools to publish code > quality metrics? If not I am going to see if sonar can be used to > archive this task... someday. > There is Moose: http://www.moosetechnology.org/ It has all the code for calculating metrics. (and to do visualizations based on them) We are actually developing a reporting dashboard thing for the pharo code base... maybe Cyrille can tell more? Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

1 0

Is there a metric server for Pharo
by Panu Suominen Feb. 28, 2011

Feb. 28, 2011

This time I ask before implementing something that has already been done. :) I know there are quite good tools for metrics and code quality control. However I don't know if there is any software to publish these kind of results. In Java world there is Sonar (http://www.sonarsource.org/) So, are there any tools to publish code quality metrics? If not I am going to see if sonar can be used to archive this task... someday. -- Panu

1 0

Re: [Pharo-users] Simple plugin for Jenkins to run Pharo/Squeak VM images
by Marcus Denker Feb. 28, 2011

Feb. 28, 2011

On Feb 28, 2011, at 4:03 PM, Panu Suominen wrote: > 2011/2/28 Marcus Denker <marcus.denker(a)inria.fr>: >> We are actually not using a plugin but just call shell scripts on the server. >> (we use Lukas' scripts https://github.com/renggli/builder ) >> I know that Philippe did a plugin, too. I always wanted to look at how a plugin can even >> simplify the setup... (especially for simple cases), but this has been pushed down the >> TODO list... > > Yep. This is plugin not a shell script. This is the main difference. > Of course the plugin is not so mature > as the shell script. For example I haven't had time to test how to > maintain package cache, but that should > be quite easy to do using Jenkin's workspace. > > At my work This start of the sentence I like a lot! :-) > we have some problems creating new build configurations > using the shell approach and thus we needed plugin to help the > process. Unfortunately I did not find plugin for the job so I had to > start writing one. I will definitly have a look. I will send you the plugin (and contact) of Phillippe. Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

1 0

Simple plugin for Jenkins to run Pharo/Squeak VM images
by Panu Suominen Feb. 28, 2011

Feb. 28, 2011

I don't know if there will be any use for this, but I had couple of free hours last weekend and I made simple plugin to run Squeak/Pharo images inside Jenkins CI-server (formerly Hudson). After installation one should be able to configure Squeak/Pharo VM under hudson management. After that one is able add build step that runs Pharo/Squeak image. One can define parameters, image and script that is passed to the given image. I will improve documentation and such when I have time. However I will do it faster if there is some interest towars this kind of plugin. Codes can be loaded form the github. (mvn package should compile plugin under target dir). https://github.com/pnuz3n/Jenkins-Pharo-Plugin There is precompiled version currently available at URL. http://users.jyu.fi/~pajumasu/jenkins-pharo-plugin/jenkins-pharo-plugin.hpi -- Panu

2 1

PharoCasts has a new skin
by laurent laffont Feb. 27, 2011

Feb. 27, 2011

Thanks to Claire & Patrick Barocca, PharoCasts now has its own skin and a nice logo ! http://www.pharocasts.com/ Laurent

1 0

Re: [Pharo-users] SimpleWebDoc question
by laurent laffont Feb. 27, 2011

Feb. 27, 2011

Hi Marco, I've put the working image here: http://lolgzs.free.fr/pharo/simplewebdoc.zip Note it uses Pharo pre-1.0 and Seaside 2.8. The nice url http://localhost:8080/Collections is handled by SWDocView>>initialRequest: I don't know if it works with Seaside 3. I haven't looked back at SimpleWebDoc for more than one year, and I've written it to learn so it's hacky. No problem to post future questions, but I think that posting on pharo-users list is even better (I read it). And thanks to look at this project. Cheers, Laurent. On Sun, Feb 27, 2011 at 6:13 PM, Marco A. Gonzalez <marcoinc(a)mac.com> wrote: > Laurent, > > First, thank you for your postings on Smalltalk. I've been bitten by the > smalltalk bug and am trying to convert from Java to smalltalk, and your > postings have helped. So... I guess I'm still a newbie... asking for help... > > So... I found that you mentioned SimpleWebDoc ( > http://www.squeaksource.com/SimpleWebDoc.html) in a posting > http://forum.world.st/Pharo-Sources-Google-Hit-Ratio-td3318289.html but it > didn't seem appropriate to post there a "newbie" message regarding how to > get SimpleWebDoc to work so please excuse me for writing directly to you. > > I loaded SimpleWebDoc into my Pharo 1.1 image via Monticello, but when I > point my browser to http://localhost:8080/view-doc and click on a package > name, say "Collections" which links to http://localhost:8080/Collections, > I get the following error: > > /Collections not found > > which I assume is because Seaside doesn't have a "Collections" entry in the > config. So, I don't know what I don't know in order to get it working how I > assume you expected it to work. Would you give me some direction? > > Finally, please let me know where I might post future questions like this > one so that others can learn from my questions and your answers. > > Thanks again for your contributions, > > - Marco A > > ------------------------------------------------------ > Marco A. Gonzalez, President > Amagavi, Inc. > Developer of database-driven web sites > > web: http://www.amagavi.com/ > email on iPhone: marcoinc(a)mac.com > cell: 202-222-5137 > > > > >

1 0

Monticello: how to update package-cache listing?
by DougEdmunds Feb. 25, 2011

Feb. 25, 2011

I deleted a mcz file manually from the package-cache directory (outside of Pharo), but when I go into the package-cache repository, through Monticello, the deleted file still appears on the list for that package. What code do I run to refresh the listing of the contents of the package-cache repository for Monticello? -- View this message in context: http://forum.world.st/Monticello-how-to-update-package-cache-listing-tp3325… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

1 0

plot
by Werner Kassens Feb. 25, 2011

Feb. 25, 2011

hi, what can i use to plot a collection of numbers? werner

3 5

Provided packages from Metacello project configuration
by Panu Suominen Feb. 25, 2011

Feb. 25, 2011

This is probably wrong mailing list for this question... Is there a way to define what categories/packages/classes are provided by the given configuration? For example ConfigurationOfXXX project latestVersion providedPackages This would not include the packages that are required by the project and are actually provided by other configurations/projects. If there is a way to produce this kind of package list it would help implementing CI-testing. Testing script would not have to explicitly list what packages to test but could refer to the project definition. Currently one has to alter the testing script every time the packages are changed. With this kind of information one could implement project CI-builds with something like this: whatToBuild := ConfigurationOfXXX project lastVersion. whatToBuild load. HDTestReport runPackages: whatToBuild providedPackages. HDLintReport runPackages: whatToBuild providedPackages. And then it would be easy to build custom Job plugin to Jenkins that would simply ask about the name and the location of ConfigurationOfXXX. -- Panu

2 1

Pharo mailing list weekly summary #3
by Francois Stephany Feb. 24, 2011

Feb. 24, 2011

Hi guys, I've posted the summary for this week: http://articles.tulipemoutarde.be/pharo-mailing-list-weekly-summary-3 I was away so I certainly forgot some important stuff. Please tell me if I did. I've seen that I'm now in Planet Smalltalk, thanks to the one who registered me ! See you next week, Francois

2 1

What to do after vm crash?
by DougEdmunds Feb. 24, 2011

Feb. 24, 2011

XP SP3 box, Pharo.exe v 4.0.2.0 Image: PharoCore-1.2 I've been using this image for several days. This time when I opened it, it immediately crashed. I've tried starting it several times, including after a reboot, with the same results. I get a popup entitled "Fatal VM error', with some numeric details. When I click ok, it writes a crash.dmp file and closes. 1) Is there a way to to recover the image, if I start with a clean image? 2) Is there anyone who wants a copy of the crash.dmp report? It's about 100 lines long, and I could post it or email a copy to someone. Thanks. - Doug Edmunds -- View this message in context: http://forum.world.st/What-to-do-after-vm-crash-tp3322029p3322029.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 3

StandardWindow and SystemWindow
by DougEdmunds Feb. 22, 2011

Feb. 22, 2011

I'm looking at the tutorial on GUIs at: http://book.pharo-project.org/book/GUI/PolymorphTutorial/Layout/?_s=J-fOIjG… The examples sometimes use StandardWindow and other times SystemWindow. When and why should I use SystemWindow? -- View this message in context: http://forum.world.st/StandardWindow-and-SystemWindow-tp3318409p3318409.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 1

[Pharo-project] Call for Pharo Support **important**
by StÃ©phane Ducasse Feb. 21, 2011

Feb. 21, 2011

Dear Pharoers We are pursuing an effort to bring Pharo to the next level: we will set up a consortium of pharo users and industrial partners. Our goal is to build a legal infrastructure that will be able to sustain the development of Pharo and improve its future. As an example, we would like to be able to collect funds (ways as to be determined - we foresee a membership model or moral license) to pay engineering tasks to be performed such as improving the virtual machine, network libraries, better JIT support. To make it short we would like to give a chance to our community to grow and structure itself so that Pharo can get stronger and that risk (truck factor) gets minimized. We are contacting you to know if your company/research group would be interested to support such effort. Showing such interest is strategically important for us and INRIA which could also support such effort. Attached is the letter of support that we will collect once signed and scanned ( stephane.ducasse(a)inria.fr / faxed at: 00 33 (0)3 59 57 78 50) Thanks for your support The Pharo Board M. Denker, S. Ducasse, and A. Lienhard

6 11

Re: [Pharo-users] [Pharo-project] [ANN] pharo focused sprint - bern, feb 26
by Mariano Martinez Peck Feb. 21, 2011

Feb. 21, 2011

On Tue, Feb 1, 2011 at 4:38 PM, Tudor Girba <tudor.girba(a)gmail.com> wrote: > Hi, > > We would like to organize a Pharo Sprint on Saturday, February 26 at SCG, > University of Berne, Switzerland (room 107): > http://scg.unibe.ch/contact/maps > > Unlike other sprints, this would not be about fixing things from the > tracker, but about building something new and reviewing the situation around > one central topic. For this one, the main topic will be Morphic and the IDE. > Why? Because it is time to rethink our day-to-day tools and bring them > closer to this century (ok, maybe decade :)). It is Ok if you are not a > specialist. It is more important to want to participate and learn. The rest > will come in time. > > ***** Please let us know by mail if you plan to attend and what you would > wish to work on (see below). > > Proposed tasks (other tasks are possible in the same area): > - Enhancements of Morphic widgets: > --- TabGroupMorph with lazy pages, closable tabs, overflow handling and > toolbars (a start exists in Glamour) > --- High level support for collapsable panes (based on the input of Gary) > --- SearchMorph with multiple groups of items (like in Spotlight) > --- MorphTreeMorph integrated with GeneralScrollPane to allow for space > filling > --- BreadcrumbMorph > --- Hyperlinks in TextMorphs > - Test and enhance the current IDE > - Evaluate TextMorphs: NewTextMorph, PluggableTextMorph, > SMxPluggableTextMorph etc > - Prototype a new ToolSet solution > - Enhancements of Glamour and of the Glamorous Toolkit > --- Debugger > --- Coder > --- Multipage Workspace > --- CodeBubbles > - Develop WeakAnnouncement (start from the implementation of Lukas) > - Evaluate the various keybinding implementations > - Evaluate ToolBuilder > - Evaluate the path to adopt SimpleMorphic > > A second working topic is getting Monticello faster, but this will only be > tackled if there are enough people for the first one. > > Cheers, > Adrian and Doru > > > > -- > www.tudorgirba.com > > "Be rather willing to give than demanding to get." > > > > >

1 0

[ANN] Moose 4.3
by Tudor Girba Feb. 20, 2011

Feb. 20, 2011

We are happy to announce the Moose Suite version 4.3: *http://moosetechnology.org/download* What is new: - New look and feel - New and flexible API to browse FAMIX models - Extensible Moose Finder - Enhanced Glamour engine to deal with complex actions - Enhanced FAMIX support for Java systems - Enhanced Glamour rendering for Morphic - Enhanced meta browser - Enhanced documentation of Mondrian - Enhanced XMLSupport - Enhanced Smalltalk importer A list of issues addressed in this release can be found at: *http://code.google.com/p/moose-technology/issues/list?can=1&q=status=Fixed%20milestone=4.3* Have fun, The Moose Team

1 0

Removing Package from SqueakSource Project
by Runar Jordahl Feb. 18, 2011

Feb. 18, 2011

I have a (private) SqueakSource project where I want to remove a package. I changed my package names, and leaving the old package will probably only confuse users. I am unable to find a way to remove packages in the SqueakSource project. There is the possibility to delete the project, and recreate it under the same name, then publish the correct packages. Is this my only option? (I use Metacello so I know I can create configurations to ease the understanding of the project's contents. But I still want to remove packages...) Kind regards Runar

2 2

Pharo-Project mailing list digest
by Francois Stephany Feb. 18, 2011

Feb. 18, 2011

Hi, If you don't follow the Pharo-Project mailing list because of its high traffic, you are maybe interested in a digest of the past week. You can find one here: http://articles.tulipemoutarde.be/pharo-mailing-list-weekly-digest Please tell me if you have any remarks/demands/critics :) See you next week, Francois

4 6

polymorph question
by Werner Kassens Feb. 18, 2011

Feb. 18, 2011

hi, i make a text entry field with StandardWindow's method: newTextEntryFor: aModel getText: getSel setText: setSel getEnabled: enabledSel help: helpText how do i let that textentryfield verify the text for its validity (in its model) when one tries to leave that field and prevent the exiting from that field? or do i have to use another method (UITheme?) for this thing? werner

1 0

Pharo on LinkedIn ...
by Geert Claes Feb. 18, 2011

Feb. 18, 2011

We would like to invite those Pharoers who have a LinkedIn account to join our LinkedIn Pharo group. http://www.linkedin.com/e/hzbhb7-gkawp6l9-36/vgh/2558378/ -- View this message in context: http://forum.world.st/Pharo-on-LinkedIn-tp3312461p3312461.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 1

Dependencies and Monticello
by Andrew Black Feb. 17, 2011

Feb. 17, 2011

I probably don't understand how to use Monticello dependencies correctly. Here is the situation. Your help appreciated. I'm writing code that uses PetitParser. So, I added to my own package a dependency on PetitParser. Strangely, rather than linking to the PetitParser repository, this copies PetitParser into my repository when save a new version on my package. The problem is that I have found it necessary to change a few definitions in *PetitParser. (I would call these bug fixes, but that is a matter of opinion.) I didn't think that would be a problem; I put the overriding definitions into my package, and everything worked fine. That is, it worked fine until I started with a clean image and loaded my package. Monticello apparently loaded my package, and then loaded PetitParser. This over-wrote my (bug-fix) definitions with the original ones. Most of my tests failed. If I load my package a second time, them my definitions overwrite the ones from PetitParser, and all is well. I infer that Monticello packages are supposed to be load-order-independent. So, what is the right way to fix this problem (other than convincing Lukas that trimSpaces should, indeed, trimSpaces)? Andrew

5 5

Lint checks & automated clean-up of unnecessary code.
by Paul DeBruicker Feb. 15, 2011

Feb. 15, 2011

Hi - Is there some place I could read about how automate the fixing of various lint checks? In a package I've written I have some sloppy parts left over from trying things, then trying other things, then finally settling on another approach entirely. For instance I have 84 instances of "Temporary variables read AND written" (RBOnlyReadOrWrittenTemporaryRule). I have 300+ methods that are implemented but not sent (RBImplementedNotSentRule), 10 un-referenced classes (RBClassNotReferencedRule), etc..... I could definitely go through and delete the temp variables by hand but am hopeful that I could just nuke them all at once, then run my tests and see what, if anything, needs replacing/repairing. Thanks for any guidance you can provide. Paul

1 0

DateAndTime and nanos
by Norbert Hartl Feb. 15, 2011

Feb. 15, 2011

I'm trying to find out how to get a date in iso8601 and a precision more fine grained than seconds. But looking at the time based classes I didn't find anything useful. The nanos value seems to be also zero. And the milliSecondClock seems only be useful to measure durations. What can I use to get this achieved? Norbert

4 9

About Coral
by Benjamin Feb. 14, 2011

Feb. 14, 2011

Hello guys, I want to write a little script that collect all the name of files in a folder then parse the name to change some characters and finally print the list. Quite simple :) But Stef tells me that it the perfect thing that should be done with Coral :) Do you know a good place to find lectures/tuto about Coral ? Thanks in advance, Ben

4 3

layout question
by Werner Kassens Feb. 13, 2011

Feb. 13, 2011

Hi, similarly to the example in http://book.pharo-project.org i do this: win := StandardWindow new. panel:=win newRow: {win newOKButton. } . y :=(panel minExtent y). win addMorph: panel fullFrame: (LayoutFrame fractions: (0@1 corner: 1@1) offsets: (0@(0-y) corner: 0@0)). win openInWorld . but the okbutton is not completely visible. how do i calc y correctly? werner

1 1

New success story online
by Adrian Lienhard Feb. 12, 2011

Feb. 12, 2011

We've added a new success story about a large Argentinian application based on Pharo: http://pharo-project.org/about/success-stories If you know about other interesting projects, please let me know. Cheers, Adrian __________________________ www.adrian-lienhard.ch twitter.com/adrianlienhard

1 0

PharoCore 1.3: Settings
by Adrien BARREAU Feb. 12, 2011

Feb. 12, 2011

Hi, I'm searching how I can enable syntax highlighting in last PharoCore 1.3? And, is it possible to have the old inspector? I almost can't work with the new one. Cheers, Adrien.

2 2

[ANN] Aida/Web 6.2 Spring edition is out
by Janko MivÅ¡ek Feb. 11, 2011

Feb. 11, 2011

Dear Smalltalkers, On the sunny side of the Alps we have a spring already, so let me bring a bit spring to you too with this new Aida release :) Fresh features from last month: - new event framework - unified JSON messaging (over WebSocket, Ajax, Comet) - pure JavaScript for Ajax, Prototype loaded only on demand - image based persistence - snapshot every hour - view active/logged sessions in Security - whitelisted IPs in Security - red 'browser not supported' warning on top of page And to repeat new features from Christmas beta: *Mobile* devices like smartpone and tablet support, with mobile device detection and special mobile CSS as addition to screen CSS, so that you can easily adapt your existing apps to mobile simply by overriding the existing CSS. *HTML5* support: Aida switches now to HTML5 by default and HTML5 specific features will be gradually added, WebSocket is there already, local storage and offline support comes next. *WebSocket* support for bidirectional communication between server and browser, as a replacement for Comet. WebSocket channel is now automatically open on the session with WebSocket capable browser. *JSON* messaging introduced to be gradually used as only message format in unified (Ajax or WebSocket) communication between server and browser *Widget forms" introduced, hierarchy of forms follow the hierarchy of standalone widgets, each widget can Ajax submit its own form together with subforms in subwidgets. There is now a continuously built One-click Pharo image (with new Aida preloaded and running) available via Download now button on http://wwww.aidaweb.si/download.html (thanks Pharo guys!). 6.2 is released on Squeak/Pharo and VisualWorks and it will be also avaiable on the soon to be released VisualWorks 7.8 CD. Release notes with most important new features highlighted are available at: http://www.aidaweb.si/release-notes-6.2 . Happy web smalltalking with new Aida! Janko -- Janko MivÅ¡ek AIDA/Web Smalltalk Web Application Server http://www.aidaweb.si

1 0

windows/flaps not responding
by Markus Schlager Feb. 9, 2011

Feb. 9, 2011

Hi all, I'm currently teaching smalltalk with pharo1.1 on Linux to pupils (10th grade). Some of them are experiencing the following problem: After reopening their pharo-image none of the windows left open before nor the window-flap at the bottom are responsive to mouse-clicks. Wherever you're clicking on, the world-menu shows up. You can open new system windows though. These will behave nicely. Is there any way to reactivate the old system-windows and the flap? Unfortunately I discarded the buggy images. Essentially the pupils had been reading ProfStef-Tutorials and some workspaces and browsers opened. Markus

2 2

Pharocasts: GUI with Polymorph
by laurent laffont Feb. 9, 2011

Feb. 9, 2011

Develop a contact manager desktop application. You will learn: - how Pharo helps the "Program by intention" style of programming - how to create basic persistency of created Contact object - how to compose a GUI, basic widgets, events and layout http://www.pharocasts.com/2011/02/pharo-gui-with-polymorph.html <http://www.pharocasts.com/2011/02/pharo-gui-with-polymorph.html> Laurent Laffont - @lolgzs <http://twitter.com/#!/lolgzs> Pharo Smalltalk Screencasts: http://www.pharocasts.com/ Blog: http://magaloma.blogspot.com/

6 6

[ANN] JNIPort 2.0 for VisualWorks, Pharo and Squeak
by Joachim Geidel Feb. 5, 2011

Feb. 5, 2011

JNIPort 2.0 for VisualWorks, Pharo and Squeak is now available! JNIPort is a Smalltalk library which allows Java code to be invoked from Smalltalk. It acts as a bridge between the world of Smalltalk objects and a Java Virtual Machine (JVM) where Java code is executing. For more information see http://jniport.wikispaces.com JNIPort 2.0 for VisualWorks can be loaded from the Cincom Public Store Repository and from the JNIPort wiki at http://jniport.wikispaces.com/Downloads JNIPort 2.0 for Pharo and Squeak is available from SqueakSource at http://www.squeaksource.com/JNIPort.html and from the JNIPort wiki. The changes from JNIPort 1.9 are: - JNIPort can now be used in Pharo and Squeak. - Packages have been renamed such that the can be shared between Store and Monticello. - Platform specific code has been moved to separate packages to make the core packages portable between VisualWorks, Pharo, and Squeak. - The much-critized _null postfix used for selectors of wrapper methods which don't have arguments is gone. - A few bugs have been fixed. Installation instructions for VisualWorks are on the JNIPort wiki, instructions for Pharo and Squeak are on the wiki of the JNIPort project page of SqueakSource. I strongly encourage you to read the instructions before installing and using JNIPort. JNIPort 2.0 has been tested with: - VisualWorks from 7.5 to 7.8 (trent dec10.3) on Mac OS X 10.6.6 and Windows XP SP 3 - VisualWorks from 7.7 to 7.8 (trent dec10.3) on Ubuntu 10.04 (64bit) with both the 32-bit and the 64-bit VisualWorks VMs - Squeak 4.2 on Mac OS X 10.6.6 and Windows XP SP 3 - Pharo 1.1.1 and 1.2 on Mac OS X 10.6.6 and Windows XP SP 3 Known issues: - In Pharo 1.1.1, you may encounter an error when JNIPort tries to register a new Java object in an internal weak dictionary. This is a bug in Pharo's implementation of this collection class. I can't do anything about it. If you can't live with it, please upgrade to Pharo 1.2. - JNIPort for Pharo and Squeak currently cannot be used with the Cog VM. - Callbacks from foreign operating system threads cannot be used in Pharo and Squeak. The Alien foreign function interface does not yet support this feature. When you run the unit tests, three tests will fail because of this restriction. These failures are expected and do not indicate bugs. Best regards, Joachim Geidel

3 3

Pharocasts: StringCalculator Kata
by laurent laffont Feb. 5, 2011

Feb. 5, 2011

This is the first Kata proposed by the 12meses12katas<http://www.12meses12katas.com/> (12 months 12 katas) initiative. You will learn: Test-Driven Development, the Pharo way. Recorded and edited by Rafael Luque <http://vimeo.com/user1627267> (big thank you!). Here: http://www.pharocasts.com/2011/02/stringcalculator-kata.html Laurent Laffont - @lolgzs <http://twitter.com/#!/lolgzs> Pharo Smalltalk Screencasts: http://www.pharocasts.com/ Blog: http://magaloma.blogspot.com/

1 0

TFFiler: creates file containers to store external files in Monticello
by Tony Fleig Feb. 4, 2011

Feb. 4, 2011

I've published a tool I'm using called TFFiler. My problem was that I had a number of external files that were required for my Seaside web application. These were CSS, Javascript, and image files that had to be placed in a specific directory tree structure. When I moved my web app to another system, I always had to remember to reconstruct the external directory tree. Over time, the directory tree got larger and more complex. For deployment, I wanted the files to be served by Apache and not the Seaside ExternalFileLibrary. (ExternalFileLibrary was the most convenient approach during development.) This meant the directory tree should be moved to a location other than the Pharo Resources directory, which was the most convenient location during development. The current version of Monticello does not provide a way to save external files with a project. TFFiler addresses this shortcoming. Now when I load my project from Monticello the necessary external files are deployed automatically. Maybe someone else will find this useful as well. http://www.tonyfleig.com/smallthoughts/blog/tffiler http://www.squeaksource.com/TFFiler Regards, TF

3 6

Matrix
by Werner Kassens Feb. 3, 2011

Feb. 3, 2011

Hi, i use Pharo-1.1-11411 and got a few questions. i looked at the comments of Matrix: it talks about Array2D but this object does not exist? it says "Element-wise matrix arithmetic works", but this is not true: while + - * functions in this way: aNumber + aMatrix, "/" does not always function: aSmallInteger / aMatrix produces an error, because aMatrix is tested with isZero. a simple fix would be to change the first program line in SmallInteger>>/ from: aNumber isZero ifTrue: [^(ZeroDivide dividend: self) signal]. to: (aNumber isNumber and: [aNumber isZero]) ifTrue: [^(ZeroDivide dividend: self) signal]. further aMatrix + aNumber and similar arithmetic dont work. but with the above fix it would work nicely with simple implementations like this: Collection>>/ / aNumber ^aNumber adaptToCollection: self andSend: #/ and so forth. while testing these things with Fractions, i noticed this: printing {3/4} produces this output:{(3/4)}. printing {{0.75}} produces this output:#(#(0.75)). printing {{3/4}} produces this output:{((Array new: 1) at: 1 put: (3/4); yourself)}. i wonder what the last output wants to tell me? does it want to tell me, that the last thing uses up a lot more memory than the first two, and accessing it takes more time, so that i should use the second thing instead, or is it (more or less) just print output related? werner

4 9

auto compile accessors / updators
by Phil Feb. 1, 2011

Feb. 1, 2011

Is there an equivalent in in pharo/squeak of the GemStone method #compileMissingAccessingMethods cheers, phil

2 2