November 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

Actors library
by Alex Schenkman Jan. 24, 2012

Jan. 24, 2012

Hi list, Is there an Actors library already available in Pharo? The part I'm interested in is the asynchronous message passing. If it has been done already, why not reuse? Thanks in advance!

4 3

[COTDC] 72 - TMorphTreeModel
by laurent laffont Dec. 4, 2011

Dec. 4, 2011

Today: TMorphTreeModel 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 Laurent

3 5

portable smalltalk, how ?
by t olschewski Dec. 4, 2011

Dec. 4, 2011

(read "portable" as "running with no changes on as many smalltalk platforms as possible") I know that a certain level of portability is achieved by the ansi standard. But what if: ... the program I am going to write has GUI, graphics and network access, ... may either take command line arguments or not, ... must handle cr-lf-crlf or even UTF - and I still want it to be as portable (in the above sense) as possible. seaside, grease, or sport - or something different? Or something yet to be written? -- View this message in context: http://forum.world.st/portable-smalltalk-how-tp4118832p4118832.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

7 11

Full Screen Button would be nice
by Ted F.A. van Gaalen Dec. 3, 2011

Dec. 3, 2011

Hi there Thanks for creating version 1.3 !!!!!!! -loaded Seaside into it. -did a file-in of my Seaside pages Works. OK Still missing: What I really would like perhaps in the next release a Full Screen Toggle Button somewhere on the desktop.. or -like in the Chrome Internet Browser could you assign it to the F11 key? just an idea. Don't understand why it is hidden in Settings browser>>appearance>>desktop (IMHO it does not belong there at all it's not a Setting but just a window state..) For now, I've solved this by creating this little helper, which, due to my laziness to give it coordinates, drops a button in the upper left corner. Mais enfin, it works. The class: SimpleButtonMorph subclass: #FullScreenFlipFlopMorph instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'TGUtil-One' with just this two instance methods: initialize super initialize. self target: self; label: 'Full Screen'; color: Color orange; actionSelector: #toggle; openInWorld "target is self is Smalltalk;" toggle Display toggleFullScreen In a workspace brought to life with evaluating fullScreenFlipFlop := FullScreenFlipFlopMorph new. Another question: As 1.3 uses a cog VM. Is the seasidehosting.st still using a non-cog VM? This would imply a cog VM based image would not run on the seasidehosting? What happened to the user window styles? (I only see Default and DemoMode) I liked the sort of Aqua themes (I have 7 apples, they are real and in the kitchen :o) Kind Regards TedvG

8 17

Mocking framework
by Juan Ignacio Vaccarezza Dec. 1, 2011

Dec. 1, 2011

Hi all, Which mocking framework would you recomend? Regards, Juan

2 2

Test execution cancel
by Juan Ignacio Vaccarezza Nov. 29, 2011

Nov. 29, 2011

Hi all, Is there any way to stop the test cases execution once the started? Regards, Juan

3 4

installer on l*n*x ?
by t olschewski Nov. 29, 2011

Nov. 29, 2011

where are the installer scripts of pharo and squeak ? earlier squeak versions installed themselves quite comfortably with /bin/sh INSTALL (squeak 3.9) oder make install (3.10) I need pharo system-wide with a default image residing in a default location like /usr/local/lib/... and the executable in a default location /usr/local/bin/, -plugin path, vm parameters etc. - am I expected to do all this manually and to repeat this anytime I want to upgrade ? -- View this message in context: http://forum.world.st/installer-on-l-n-x-tp4104740p4104740.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

4 7

Pharo By Example - VM issues
by Johan Fabry Nov. 28, 2011

Nov. 28, 2011

Hi all, I'm evaluating PBE (1.0) because my nephew is starting to get interested in programming :-) There is a VM issue though: the PBE website refers the pharo website to download the VM, and the only VM I can find is in the 1.3 download page. This VM however crashes with the PBE image (MacOS). It works with the latest squeakvm (non-cog) though. I think, as a minimal-effort patch, it would be good to have the PBE website refer to squeakvm.org and clearly indicate that to run the PBE image a non-cog VM should be used. Idem on the pharoproject website. Greetings, ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry jfabry(a)dcc.uchile.cl - http://dcc.uchile.cl/~jfabry PLEIAD Lab - Computer Science Department (DCC) - University of Chile

2 3

Fwd: [Pharo-project] INRIA Postdoc position: security in dynamic languages
by Mariano Martinez Peck Nov. 26, 2011

Nov. 26, 2011

---------- Forwarded message ---------- From: stephane ducasse <stephane.ducasse(a)free.fr> Date: Sat, Nov 26, 2011 at 4:55 AM Subject: [Pharo-project] INRIA Postdoc position: security in dynamic languages To: An open mailing list to discuss any topics related to an open-source Smalltalk <Pharo-project(a)lists.gforge.inria.fr> Postdoc Position â¢ Duration: 3 years â¢ Starting date: end 2011 â¢ Where: RMOD team at INRIA Lille Nord Europe http://rmod.lille.inria.fr â¢ Salary: 55 Keuros net (before taxes) Keywords: dynamic languages, security, information flow, Smalltalk, Javascript The position will take place in the context of the Systematic Resilience project. We will focus on the following main tasks: â¢ Identification and understanding of security problems in Javascript and other dynamic languages â¢ Study and analyze existing approaches towards securing Javascript (Caja, isolates...) â¢ Comparison of different approaches to secure dynamic applications (Zope model, ZTK), Ruby â¢ Study of Mirrors/Capabilities as a basis for security in Javascript â¢ Proposition of an safe architecture for Resilience Please contact Stephane Ducasse (Stephane.Ducasse(a)inria.fr) for more information. http://rmod.lille.inria.fr/ http://stephane.ducasse.free.fr -- Mariano http://marianopeck.wordpress.com

1 0

Creating a FSReference
by Sean P. DeNigris Nov. 26, 2011

Nov. 26, 2011

What's the easiest way to create a reference to, say, /dev from a string? I came up with "FSFilesystem disk root resolveString: '/dev'." Anything better? Also, what's the difference between FSReference>> resolve: resolveString: ? They both seem to do the same thing in this case. Thanks. Sean -- View this message in context: http://forum.world.st/Creating-a-FSReference-tp3962401p3962401.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 4

About scheduling
by Pablo Herrero Nov. 26, 2011

Nov. 26, 2011

Hi! Is there any mean to tell the Pharo VM to not switch to any other thread ultil you can tell is safe to do so? Thx in advance!

4 7

Restoring a Morph's Default Mouse Handling
by Sean P. DeNigris Nov. 25, 2011

Nov. 25, 2011

I always forget how to do this, so I added a chapter to the online book: As soon as you define #handlesMouseDown: in your Morph subclass, you lose the default behavior where a morph is picked up when clicked on. To restore this behavior, compile the following two methods in your morph class: mouseDown: anEvent anEvent hand waitForClicksOrDrag: self event: anEvent. startDrag: anEvent anEvent hand grabMorph: self. http://book.pharo-project.org/book/LanguageAndLibraries/GUI/restoringdefaul… -- View this message in context: http://forum.world.st/Restoring-a-Morph-s-Default-Mouse-Handling-tp4097353p… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Re: [Pharo-users] VSE ObjectFiler / VW BinaryObjectStorage
by Marcus Denker Nov. 25, 2011

Nov. 25, 2011

On Nov 25, 2011, at 4:17 PM, Chantal Thibodeau wrote: > Hi > > I'm trying to migrate VSE / VW code to Pharo. I have some "serialized" objects "dumped" with a class called ObjectFiler (VSE) or BynaryObjectStorage (VW). > > Those files are index files. They were "dumped" for a quick reload. > > I'm looking and I cannot find something similar in Pharo. Will I have to transfer those files to something else. > > I appreciate your help. > Fuel might be the best for storing objects on disk and loading them *fast*: http://rmod.lille.inria.fr/web/pier/software/Fuel -- Marcus Denker -- http://marcusdenker.de

1 0

scripting pharo
by t olschewski Nov. 25, 2011

Nov. 25, 2011

is there a standard way of using pharo 1.3 OneClick (or squeak 4.2 All-in-One) for scripting tasks ? With python, I simply: * write a script foo.py * use extra classes by writing "import xyz" * run "python foo.py" or even simpler: * #!/usr/bin/python -- View this message in context: http://forum.world.st/scripting-pharo-tp4089006p4089006.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 4

Shrink Wrapped Window
by Sean P. DeNigris Nov. 24, 2011

Nov. 24, 2011

I want a Window that shrinks to fit its contents, like a PluggableDialogWindow, but that has a title bar and buttons, like a Standard Window. Any ideas? Thanks. Sean -- View this message in context: http://forum.world.st/Shrink-Wrapped-Window-tp4102643p4102643.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 2

pharo wrapper script suggestion and a question
by t olschewski Nov. 24, 2011

Nov. 24, 2011

what do you think about modifiying the wrapper script pharo.sh (OneClick edition) slightly in order to alleviate scripting: a) pharo.sh: passing "$@" over to pharo: ... exec "$BASE/pharo" \ ... ... "$ROOT/Contents/Resources/pharo.image" \ "$@" b) making a second script, pharo-headless.sh: ... exec "$BASE/pharo" \ -headless \ ... ... "$ROOT/Contents/Resources/pharo.image" \ "$@" Test: pharo-headless anyScript.st And another Question: is there a better way of forcing "pharo -headless" to quit, better than writing "WorldState quitSession." in every script ? -- View this message in context: http://forum.world.st/pharo-wrapper-script-suggestion-and-a-question-tp4099… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 2

Moving package extension methods into new package
by Sean P. DeNigris Nov. 23, 2011

Nov. 23, 2011

I wanted to move all the extension methods from a package into another package. I came up with the following. Is there a better way? oldPackageName := 'LivingCode-bdd extensions'. newPackageName := 'BDDExtensions'. package := PackageInfo named: oldPackageName. extendedClasses := package extensionMethods collect: [ :e | e methodClass ] as: Set. extendedClasses do: [ :c | c organization renameCategory: '*', oldPackageName toBe: '*', newPackageName ]. -- View this message in context: http://forum.world.st/Moving-package-extension-methods-into-new-package-tp4… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

1 0

Oops... there, that's better
by Sean P. DeNigris Nov. 22, 2011

Nov. 22, 2011

errorWindows := World windowsSatisfying: [ :w | (w label beginsWith: 'MessageNotUnderstood') and: [ w label includesSubString: 'MouseMoveEvent' ] ]. errorWindows size. "212" errorWindows do: [ :e | e delete ]. -- View this message in context: http://forum.world.st/Oops-there-that-s-better-tp4097545p4097545.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

1 0

process priority
by t olschewski Nov. 22, 2011

Nov. 22, 2011

I've some more questions: 1. is there a way to run "do-it"s and other user activity at a priority of 40, say, by default ? I know I can say "p := [ ... lenghty ...] forkAt: 40" and "p terminate" anytime in order to prevent user interface from freezing. 2. are my "forkAt:" processes supposed to appear in the Process Browser and if yes: where do I find them ? 3. If I open a workspace and a Transcript in a new (1.3-13315) image and run: p := [ 1 to: 10 do: [ :n | Transcript show: n; cr; cr; show: n factorial; cr; cr ]] forkAt: 40. then everything works fine. If I replace 10 by 1000 (don't do this yourself) then sometimes after a while the Transcript window turns red with two yellow lines and a debug window pops up with varying errors (mostly "subscript out of bounds"). Then again, in some cases it runs with no error. I have seen this in squeak 4.2, too. -- View this message in context: http://forum.world.st/process-priority-tp4092574p4092574.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 8

GlorpDBX
by Jonathan Kelly Nov. 22, 2011

Nov. 22, 2011

Hi, feeling particularly stupid right now. Been trying to get Glorp DBX working with Postgresql for the last 2 hours and I'm busted. It took me about an out just to find out how to load and configure things. ugh. It took me a while to work out I had to actually install OpenDBX (doh). So I have downloaded that and added the directory to my PATH. So I'm trying to run the tests and I get DBXFatalError: FATAL OpenDBX: Loading backend library failed. I know it's finding OpenDBX, because when I move the OpenDBX folder, I get a different error - "Error: External Module Not Found" from apiInitialize (and I can see it's trying to load libopendbx-1.dll). Part of my problem is squeakdbx.org domain expired on 09/27/11 and is now a godaddy parking page. double ugh. Anyone got any ideas? I'm running a fresh 1.3 using CogVM-Win-13307 install on Windows XP. Jonathan.

3 6

Loading projects and building your own images with Metacello
by Mariano Martinez Peck Nov. 21, 2011

Nov. 21, 2011

Hi. I usually don't advertise my blog, but I think this post may be interesting to some of you: http://marianopeck.wordpress.com/2011/11/19/loading-projects-and-building-y… Cheers, -- Mariano http://marianopeck.wordpress.com

2 1

OSProcess reading utf8 files
by Francois Stephany Nov. 20, 2011

Nov. 20, 2011

Hi, Reading an utf8 file with OSProcess results in some weird characters showing up. (PipeableOSProcess command: 'less /path/to/a/text/file') output. -> inspect the bytestring and get some non-ascii characters fucked up. Doing `less /path/to/a/text/file` in a terminal displays the file fine. That's probably something stupid on my side but I cannot get it working. Any idea ? Cheers, Francois

3 2

Something like XDV/Diazo/Deliverance in Smalltalk?
by Offray Vladimir Luna CÃ¡rdenas Nov. 18, 2011

Nov. 18, 2011

Hi, Me and a group of friends in a local hackerspace[1] want to intervene the interface of this Cynin site using the technologies of Diazo[2], Xdv[3] or Deliverance[4]. Seeing the way that views are wrote in Seaside I wondder if there is someway to make a similar intervention/integration of interface without touching directly the code a la Diazo/XDV/Deliverance but using Seaside/Zinc or some similar combination. [1] http://hackbo.co/ [2] http://diazo.org/index.html [3] http://www.enfoldsystems.com/software/proxy/docs/6.0/xdvtutorial.html [4] http://packages.python.org/Deliverance/ Any pointer will be appreciated. Cheers, Offray

1 0

Changing Cherokee for a Smalltalk based web server?
by Offray Vladimir Luna CÃ¡rdenas Nov. 18, 2011

Nov. 18, 2011

Hi all, I'm getting random "504 gateway error" answers from several sites (using Zope and Rails) that are served by Cherokee using a reverse proxy setup. This error is an open issue in Cherokee and has been reported and not properly patched since 2009: https://code.google.com/p/cherokee/issues/detail?id=504 I did choose Cherokee because of its easiness to setup and newbie friendly interface and character, but with this problem I'm thinking in testing another server, may be a Smalltalk based one that have similar characteristics and can serve sites in Zope or Rails also. I know about Comanche, Swazoo and Zinc, but I don't know which of them is better (making load balance and stuff like that) and have proper documentation about using it in combination with other software (Zope and Rails in my case). Any advice on this matter is greatly appreciated, Offray

4 4

VSE / VW migration to Pharo
by Chantal Thibodeau Nov. 17, 2011

Nov. 17, 2011

Hi We want to migrate code from VisualWorks 3.0 to something else. It is a batch search engine so the GUI is extremely simple and could be rewrite from scratch. I tried the VW 7.0 but it is too costly (but it works perfectly fine with small adjusments in less than one hour). I installed Pharo and I am unabled to even load some code. I read that everything should be in the repository. Fine for the new code but what do I do with the "old" one ? I don't see anywhere to load a source file or a parcel file. I need some help. I also download Squeak, that I will try in the next days. The speed of execution is the main issue. Thanks a lot

2 2

Pharse Node
by Pablo Herrero Nov. 17, 2011

Nov. 17, 2011

Hello everybody! I'm looking for documentation for the ParseNode class's hierarchy at the 'Compiler-ParseNodes' category. Does anyone know where I could find some? PS1: I'm working on a project where I need to do some runtime code manipulation, like creating AST Nodes on the fly and things like that. PS2: Is this the correct list to post this questing or pharo-project might be more apt? Cheers! Pablo

2 2

The Pharo curse
by Jeff Gray Nov. 17, 2011

Nov. 17, 2011

In my day job I write a lot of documents. I'm finding that the more I use Pharo, when typing in MS Word I select a piece of text and press ( and then wonder where all the text has gone :-) Maybe the answer is to use Pharo for word processing... -- View this message in context: http://forum.world.st/The-Pharo-curse-tp4078843p4078843.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 1

[ANN] SqueakSource 3 RC 1
by Tobias Pape Nov. 16, 2011

Nov. 16, 2011

Dear All, I hereby release SqueakSource 3 RC 1 to the public. I wasn't able to come up with a nice name this time, so it is just 'the Release Candidate' :) Thanks to Dale, Norbert, and Philippe for their support, to many I met at ESUG'11 who gave good inspiration and anybody who listened and helped. == Improvements since the Beta: - Backgrounding does not fork but use a separate process on Squeak; Service VM on GS. - New feature: "well known name" for a Repo, like Squeaksource or gemsource... (So, that Gofer new gemsource: â¦ can be used in the Repo strings on the project sites) - Improvements in Sitemap building, XML-parser not required, plain Seaside - Pick up newer versions of several, esp. gemstone projects. Email support should be back now. - Fix display of "news" section - Fix for #9: Sorting of Projects can be confusing. - Fix: by default, non-world-read projects are not visible, now. - Fix for #7: "Tags" link responds with MessageNotUnderstood page - Fix for #22: SSProject>>versionAdded: forks a process - Fix for #23: Sitemap generation fails - Fix for #24: SSVersionAlreadyExists thrown by SSVersionView>>move:to: but not handled... - Fix for #27: MNU #ifNotEmpty: in SSEmailSubscription >> versionAdded:to: nukes gem - Fix for #29: add "breathing space" in tables'. - HTTP DELETE for versions (e.g., for future Monticello tool usage) - more tests. == The (up to now) sole instance is the HPIâs Software Architecture Groupâs Squeaksource, wich is not open to registration at the moment. However, I hope the GemStone ss3 instance will be migrated soon (http://ss3.gemstone.com) Install it yourself! Pharo: == Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfSqueakSource'; load. ((Smalltalk at: #ConfigurationOfSqueakSource) project version: '3.0-rc.1') load: #('All') == Squeak: == Installer ss project: 'MetacelloRepository'; load: 'ConfigurationOfSqueakSource'. ((Smalltalk at: #ConfigurationOfSqueakSource) project version: '3.0-rc.1') load: #('All') == GemStone (with ProjectGofer, else like pharo): == Gofer project load: 'SqueakSource' version: '3.0-rc.1' group: #('All'). == To come: === â¢ more tests â¢ moving and copying via backend (i.e., HTTP request) â¢ inboxes â¢ branch projects â¢ (converting squeaksource.com to a SqueakSource3 ;) ) === I hope you like it. Best -Tobias PS: Did you know that â¢ you can get a personal rss stream of your âfavouriteâ projects? (like following on github) â¢ you can set up parent projects for your projects and automatically move all your packages there? â¢ you can extend SqueakSource quite easily? (Example: Issues) â¢ you can install a stripped down version on SqueakSource? (e.g., without Issue tracking, Statistics or filesystem support)

1 0

Seaside and Fuel
by Jeff Gray Nov. 16, 2011

Nov. 16, 2011

I am writing a Seaside application which will have a modest set of data to be persisted. I would like to use Fuel for the persistance, for its simplicity. I assume that Fuel will be a "load all data into memory" and "save all data back to disk" sort of a model. If so, I 'm wondering where I should do this in my code. I can attach the "load" to the entry page but the "save" is more tricky. Would it make more sense to attach these to start up and close down of the image? What do you reckon (or am I thinking about this all wrong)? -- View this message in context: http://forum.world.st/Seaside-and-Fuel-tp4075405p4075405.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 2

WAFile or link to file
by Foxugly Nov. 16, 2011

Nov. 16, 2011

Hi, I have a problem with WAFile, upload/download files. Of course i know this link : http://book.seaside.st/book/fundamentals/forms/fileupload but in my project I have to import/export all the datas and files and so I lose my WAFile objects So, is it possible to create a WAFile without the web interface (so without html uploadFile) or do you know how to make a link to an existing file on the server. can you help me ? best regards Renaud Vilain

2 1

Exif package
by Francois Stephany Nov. 16, 2011

Nov. 16, 2011

Hi, Do somebody knows what happened to the Exif package? http://lists.gforge.inria.fr/pipermail/pharo-project/2010-November/036209.h… Thanks! Francois

1 0

Adding a context menu to a Morph
by Sean P. DeNigris Nov. 11, 2011

Nov. 11, 2011

I added instructions to the online book... http://book.pharo-project.org/book/LanguageAndLibraries/GUI/contextmenus Sean -- View this message in context: http://forum.world.st/Adding-a-context-menu-to-a-Morph-tp3991117p3991117.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

2 2

Load package without warnings
by Francois Stephany Nov. 9, 2011

Nov. 9, 2011

Hi list, Is there a way to load packages without having to click 'Proceed' when you get warnings ? I'd like to add CommandShell in a metacello configuration loaded on a headless server... Cheers, Francois

4 7

OOP: Managing a time-consuming model action from the UI
by Sean P. DeNigris Nov. 6, 2011

Nov. 6, 2011

I'm creating a media library service in Pharo. I have a DVDMorph class, with DVD as a model. One feature is to cache a DVD locally as a compressed disk image, which usually takes about 5 minutes. The ways I thought of were: 1. use announcements 2. pass blocks for updating and cancelling 3. immediately return some kind of DiskImageProxy that would stand in for the DiskImage until processing was done, and then replace (maybe with become?). I chose #2 because it seemed the easiest for my simple needs (I don't need multiple views); but it definitely made the API uglier, as I have to pass the update and cancel blocks through 3-4 methods. What do you think would be the best approach? Here's a simplified version of what I wrote (not refactored)... DVDMorph>>cache updateBlock := [ :progress | WorldState addDeferredUIMessage: [ progressMorph contents: progress asString ] ]. [ self dvd cacheUpdating: updateBlock cancelIf: [ self shouldCancel ] ] forkAt: Processor userBackgroundPriority. DVD>>cacheUpdating: aBlock cancelIf: cancelPredicate Resources library importAs: imageFileName after: [ :fileReference | CreateDiskImage from: self deviceFile to: fileReference updating: aBlock cancelIf: cancelPredicate. diskImage := fileReference ]. CreateDiskImage >>from:to:updating:cancelIf: process := PipeableOSProcess command: 'hdiutil create -srcfolder ', from, ' ', to. [ process isComplete ] whileFalse: [ self shouldCancel ifTrue: [ process processProxy sigint. ^ self ]. self updateStatus. (Delay forSeconds: 1) wait ] Thanks. Sean -- View this message in context: http://forum.world.st/OOP-Managing-a-time-consuming-model-action-from-the-U… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Nov. 3, 2011

Hi guys we have a roadmap for Esteban and we would like to share it with you. We have extra items that we would like to see fixed and we are welcoming your feedback/suggestions. Note this is typically the way we want to work with the consortium in the future: Build an initial roadmap and refine it based on the input of the community. - A website for the consortium registration (esteban is expert on that). - This is important for INRIA and for the visibility of the consortium. We should get new members :) - Integration with SmalltalkHub - Working on fixing bugs! - Debugger fixes - Continuous bug fixing. - Improving release process: faster, more people involved, simpler. - Working on metacello repositories for each distributions (everything is there but missing last bits) - Metacello tools - Automatic release validations - Automatic validation of fixes Now the free items with probably igor involvement - Multiwindowing support - Fully working multithreaded FFI with ***Documentation*** - Filesystem fix and integration - Integration of OPAL - RPackage integration Igor related - Ephemerons - Object format - VM branding - Use of new canvas - Event cleaning So we are waiting for your suggestions. Stef

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Enhancing SequenceableCollection>>combinationsAt:in:after:do:
by Runar Jordahl Nov. 3, 2011

Nov. 3, 2011

In Pharo 1.3, SequenceableCollection>>combinations:atATimeDo: will, for all combinations, send the same collection instance as argument for the block. Therefore, if you use this collection itself, you will be surprised: |answer| answer := OrderedCollection new. #(a b c) combinations: 2 atATimeDo: [:each | answer add: each]. answer Here I expect to end up with a collection looking like this: 1: #(#a #b) 2: #(#a #c) 3: #(#b #c) But I end up with: 1: #(#c #c) 2: #(#c #c) 3: #(#c #c) One fix is to change the client code to copy the argument for the block: |answer| answer := OrderedCollection new. #(a b c) combinations: 2 atATimeDo: [:each | answer add: each copy]. answer Another solution is enhancing SequenceableCollection>>combinationsAt:in:after:do: to copy the collection: nn + 1 to: self size do: [ :index | aCollection at: jj put: (self at: index). jj = aCollection size ifTrue: [ aBlock value: aCollection copy ] ifFalse: [ self combinationsAt: jj + 1 in: aCollection after: index do: aBlock ] ] Kind regards Runar Jordahl blog.epigent.com

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[pharo-users] Can't Load Magma in Pharo 1.3
by Ankur Sethi Nov. 2, 2011

Nov. 2, 2011

Hi, I'm new to Pharo and Smalltalk in general. I'm trying to build a small blogging application using Pharo and Seaside. I've decided to use Magma for persistence, but I'm having some issues loading it in Pharo 1.3. I loaded Magma the usual way: Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfMagma'; load. (Smalltalk at:#ConfigurationOfMagma) project latestVersion load: 'Server'; load: 'Client'. ... and I was presented with a backtrace. Since didn't know how to get a full backtrace out of Pharo in plain text, I took a screenshot: http://imagebin.org/180559 I know this is not adequate, but I'm hoping someone can help me get Pharo to give me information about this issue in a more convenient format. When I told Pharo to abandon loading the package and then re-evaluated this: (Smalltalk at:#ConfigurationOfMagma) project latestVersion load: 'Server'; load: 'Client'. ... then everything went just fine. I even tried creating a Magma repository, which worked. However, some things were totally borked in my Pharo image. I couldn't get the System Browser to do syntax highlighting, for one. I'm using Pharo1.3 + CogVM 13307 on Mac OS X Lion. I hope I made sense. Thanks. -- Ankur Sethi (GeneralMaximus on IRC and elsewhere)

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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

Exception style
by Jeff Gray Nov. 1, 2011

Nov. 1, 2011

I have just watched James Robertson's Exception screencast on exceptions in Pharo. I haven't really bothered with it previously as I have only played around and haven't done anything in anger. My commercial background in Java and C# has been with quite different styles of exception handling. Java was always cluttered with exception handling and re-throwing all through the code whereas in .net it was very much a 'let it bubble up to the container' approach. Although James screencast shows the mechanics of exceptions I'm wondering what is a normal exception handling strategy in Pharo? Obvoiusly tutorial code doesn't want to get bogged down with exceptions when trying to teach a specific aspect in smalltalk/pharo/oo etc but I'm yet to see tutorial example code that handles exceptions. -- View this message in context: http://forum.world.st/Exception-style-tp3962162p3962162.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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