September 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

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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.

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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!

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[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

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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."

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[ANN] Pharo Glorp port release
by Guillermo Polito Oct. 13, 2011

Oct. 13, 2011

Hi! We are reaaaaally happy to announce (at last) a very very stable release of the new Glorp port :D. We've done a lot to achieve the following results with Glorp: OpenDBX Oracle: - 7 errors related to Blobs, which are not supported by opendbx. - 1 failure related to timestamp cast (and I don't understand the test intention yet :P) OpenDBX MySql: - 100% green tests :D OpenDBX PostgreSQL: - 7 errors and 1 failure related to Blobs, which are not supported by opendbx (again). OpenDBX SQLite: - 6 failures related to large objects, which are not supported by opendbx (again again).. 2 (expected) failures related to times & dates. Native PostgresV2 Driver: - 2 failures with blobs So far, some FAQs: *Â¿What is the difference between this port and the old one?* Almost 4 years of work of the VW team with tons of bugfixing (see the last 4 years release notes from Glorp for more detail :P) *Â¿How can I load it?* If you want to load Glorp + OpenDBX, you can try the following: *Gofer it squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfGlorpDBX'; load. (((Smalltalk at: #ConfigurationOfGlorpDBX) perform: #project) perform: #version: with: #stable) load* Also, you can try loading only Glorp (maybe because you want to integrate it with your own database driver): Gofer it squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfGlorp'; load. (((Smalltalk at: #ConfigurationOfGlorp) perform: #project) perform: #version: with: #stable) load *Â¿How did we test it?* We've tested it in Pharo 1.2 and Pharo 1.3 + Jenkins CogVms. *Â¿What's coming next?* *We are working for your happiness (?).* Hehe, our next step is to release the DBXMagritte project, which aims to allow people working in the Software business to create easy CRUD -the same scaffolding idea from RoR for example- including some of the following features: - (create a class model + magritte descriptions) from a database schema - [if you already have a descripted class model] use magritte descriptions to create a database schema - use magritte descriptions to create glorp mappings And then, you can use the same descriptions for your Seaside app, or in every magritte-friend framework you like ;) So, thanks again to ESUG for sponsoring the project :). Guillermo, Santiago, Gisela, Mariano, Esteban and Diogenes

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Re: [Pharo-users] [Pharo-project] [squeak-dev] Started to post Videos of "Deep into Smalltalk"
by Marcus Denker Sept. 30, 2011

Sept. 30, 2011

On Sep 30, 2011, at 9:52 AM, Alexander LazareviÄ wrote: > 2011/9/30 Marcus Denker <marcus.denker(a)inria.fr>: >> and the classic talk of Doru from ESUG 2008 showing how (not) to give ESUG talks. > > Saw it for the first time! Nice :) > > Even if this is most likely a very well known service, it can't hurt > to mention http://www.slideshare.net as a source of inspiration. > Yes! We put all ESUG slides there, too: http://www.slideshare.net/esug/ (335 Talks!) So the slides of the presentation are there, too: http://www.slideshare.net/esug/1-presentingatesug -- Marcus Denker -- http://marcusdenker.de

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Re: [Pharo-users] SystemReporter for Pharo [WAS] Fwd: [Pharo-project] [update 1.4] #14177
by Mariano Martinez Peck Sept. 30, 2011

Sept. 30, 2011

On Fri, Sep 30, 2011 at 2:51 PM, Alexander LazareviÄ <laza(a)blobworks.com>wrote: > Mariano, > > great that you made it work in Pharo. Yes, we have a couple of problems...but not that big. Thanks for doing this useful tool. > Below method was just a work in progress. > > Excellent then, nothing to report :) > Thanks, > Alex > > 2011/9/30 Mariano Martinez Peck <marianopeck(a)gmail.com>: > > Hi guys. This is a small tool done by Alexander LazareviÄ to get > > information from the system. Very useful when reporting bugs. So keep it > in > > mind. > > You can do SystemReporter open. or directly open it from the menu System > -> > > SystemReporter. > > > > Alexandre: we found an implemented message #environ in: > > reportOSEnvironment: aStream > > > > | env | > > self header: 'Operating System Environment' on: aStream. > > env := [Smalltalk os environ] on: Error do: [^self]. > > env keys asSortedCollection do: [:name | > > aStream nextPutAll: name; nextPut: $=; nextPutAll: (env at: > name); > > cr] > > > > so...it seems broken. > > > > If you want to take a look to the changes we have to do in order to make > it > > work in Pharo: > > > > http://www.squeaksource.com/SystemReporterPharo > > > > Cheers > > > > > > ---------- Forwarded message ---------- > > From: Marcus Denker <marcus.denker(a)inria.fr> > > Date: Fri, Sep 30, 2011 at 11:43 AM > > Subject: [Pharo-project] [update 1.4] #14177 > > To: An open mailing list to discuss any topics related to an open-source > > Smalltalk <Pharo-project(a)lists.gforge.inria.fr> > > > > > > 14177 > > ----- > > > > Issue 4851: We should integrate systemReporter > > http://code.google.com/p/pharo/issues/detail?id=4851 > > > > > > > > -- > > Marcus Denker -- http://marcusdenker.de > > > > > > > > > > > > -- > > Mariano > > http://marianopeck.wordpress.com > > > > > -- Mariano http://marianopeck.wordpress.com

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SystemReporter for Pharo [WAS] Fwd: [Pharo-project] [update 1.4] #14177
by Mariano Martinez Peck Sept. 30, 2011

Sept. 30, 2011

Hi guys. This is a small tool done by Alexander LazareviÄ to get information from the system. Very useful when reporting bugs. So keep it in mind. You can do SystemReporter open. or directly open it from the menu System -> SystemReporter. Alexandre: we found an implemented message #environ in: reportOSEnvironment: aStream | env | self header: 'Operating System Environment' on: aStream. env := [Smalltalk os environ] on: Error do: [^self]. env keys asSortedCollection do: [:name | aStream nextPutAll: name; nextPut: $=; nextPutAll: (env at: name); cr] so...it seems broken. If you want to take a look to the changes we have to do in order to make it work in Pharo: http://www.squeaksource.com/SystemReporterPharo Cheers ---------- Forwarded message ---------- From: Marcus Denker <marcus.denker(a)inria.fr> Date: Fri, Sep 30, 2011 at 11:43 AM Subject: [Pharo-project] [update 1.4] #14177 To: An open mailing list to discuss any topics related to an open-source Smalltalk <Pharo-project(a)lists.gforge.inria.fr> 14177 ----- Issue 4851: We should integrate systemReporter http://code.google.com/p/pharo/issues/detail?id=4851 -- Marcus Denker -- http://marcusdenker.de -- Mariano http://marianopeck.wordpress.com

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Started to post Videos of "Deep into Smalltalk"
by Marcus Denker Sept. 30, 2011

Sept. 30, 2011

Hello, After a long wait... finally: http://www.youtube.com/user/esugboard#grid/user/843D1D545F9F52B6 This now has: - Extensive, great two part PetitParser Tutorial by Doru (3 hours) http://www.youtube.com/watch?v=vgiJG3Vd6KU If you ever wanted to write a Parser, this will give you a very understandable, step-by-step introduction. - Enhancing SqueakNOS. http://www.youtube.com/watch?v=u9RUmIY2Sz8 Crazy, these Argentinians... - NativeBoost: http://www.youtube.com/watch?v=Bd6mz6F167s Generate Binary code from the image. And a *very* fast FFI as an example. Guido and Javier of the SqueakNOS video above are right now busy here in Lille building something *very* interesting with NativeBoost... - FFI, an introduction by Igor: http://www.youtube.com/watch?v=fU8XRCO7MUU What is FFI and how do we use it? - and the first part of "A little Journey in a Virtual Machine" http://www.youtube.com/watch?v=FJQmjhOvjUs This has 5 (!) parts and together with the FFI presentation, this allows you to experience the very first lecture ever given by Igor Stasenko. More to come... but this already might keep interested people busy for some enternaining evenings :-) We will post all the rest step by step. The ESUG Youtube account has more stuff posted already, e.g. the talks of this years IWST Workshop and some talks of ESUG2011, and the classic talk of Doru from ESUG 2008 showing how (not) to give ESUG talks. All here: http://www.youtube.com/user/esugboard Marcus -- Marcus Denker -- http://marcusdenker.de

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Finding Instance Variables
by Raymond Brinzer Sept. 30, 2011

Sept. 30, 2011

Hello. I'm a Smalltalk novice. I'm wondering: how would I get the set of instance variables for a particular class? I see Class has an allClassVarNames method, but I don't see something analogous for instance variables. Thanks. -- Ray

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Now available: a database conectivity API and its MySQL implementation
by Anindya Haldar Sept. 29, 2011

Sept. 29, 2011

I am extremely pleased to offer to the community a generic Smalltalk API for database connectivity API, along with a MySQL implementation written from ground up. Think of JDBC and DBI like interfaces in other languages and environments, and this one offers abstract facilities like connection, prepared statement, resultset, row, metdata and so on for the application. The API implementation uses driver delegates, and insulates the applications from the driver specific interfaces. As of now, a MySQL implementation is available, with other databases engine supports in the future plans. The API supports server side prepared statements and cursor based fetch implemented in the MySQL driver. The implementation is currently available in 3 parts: 1) StdbCore project: This is primarily the API definitions and the delegation logic URL: http://www.squeaksource.com/StdbCore.html 2) StdbMysqlImpl project: This is the MySQL implementation of the StdbCore API URL: http://www.squeaksource.com/StdbMysqlImpl.html 3) StdbMysqlProtocol project: This is the underlying MySQL protocol driver, and used by the MySQL API implementation URL: http://www.squeaksource.com/StdbMysqlProtocol.html There is a package load ordering dependency (documented in the MySQL implementation project). Please load the core and the protocol driver packages first, before you load the implementation package. Combined, the packages has around 200 tests (most of them in the protocol driver and the API implementation) and are running green on Pharo 1.1.1 one click, Squeak 4.2 one click, Squeak 3.10 (with Seaside 2-8-573 dev image) under Mac OS X 10.5.8 with MySQL server 5.0.67. This was in the making for some time; and I feel it is time to share it with the community. I will continue to post more documentation and code snippets in the project page Wiki sections. For now, looking up the tests may be your best guide. Happy programming! Best, Anindya Haldar

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About the Pharo CogVM
by Sven Van Caekenberghe Sept. 29, 2011

Sept. 29, 2011

99% of the mails on this list are about issues, problems or feature requests, not this one. I did a new clean server deploy this week and decided to use the new VM as currently advertised on the downloads page, CogVM-Unix-13307, that I presume came from the CI system. I am using a 1.3 image with Seaside 3. $ ./coglinux/CogVM -version 3.9-7 #1 Wed Aug 31 14:50:51 CEST 2011 gcc 4.1.2 Croquet Closure Cog VM [CoInterpreter VMMaker-oscog-IgorStasenko.123] Linux pharo-build.lille.inria.fr 2.6.18-194.26.1.el5xen #1 SMP Tue Nov 9 14:13:46 EST 2010 i686 i686 i386 GNU/Linux plugin path: /home/ubuntu/coglinux/ [default: /home/ubuntu/coglinux/] I am happy to report that all went well: the CogVM distro is small and clean, and performed perfectly building new images and running the application server code. FYI, the server I am using is an Amazon EC2 micro instance with Ubuntu 11.04 32-bit. Thanks a lot ! Sven PS: I do think the VM could use some more branding here and there, especially the Mac one, but that is another story.

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Re: [Pharo-users] Now available: a database conectivity API and its MySQL implementation
by Anindya Haldar Sept. 29, 2011

Sept. 29, 2011

Thanks Andreas. The MySQL protocol is a native all-Smalltalk MySQL driver. There is no FFI or plugin associated with it. The driver implements the MySQL wire protocol on top of socket stream. Best, Anindya ________________________________ From: Andreas Raab <andreas.raab(a)gmx.de> To: Anindya Haldar <anindya_haldar(a)yahoo.com>; The general-purpose Squeak developers list <squeak-dev(a)lists.squeakfoundation.org> Sent: Thursday, September 29, 2011 1:22 AM Subject: Re: Now available: a database conectivity API and its MySQL implementation Very nice. Quick question: How are you accessing the MySQL db? Are you using a network connection or some FFI facilities? If you are using a network connection, we might have use for your project right away; our current FFI based ODBC implementation causes headaches when the calls take a long time (>1sec). Cheers, Â - Andreas On 9/29/2011 10:11, Anindya Haldar wrote: > I am extremely pleased to offer to the community a generic Smalltalk API > for database connectivity API, along with a MySQL implementation written > from ground up. Think of JDBC and DBI like interfaces in other languages > and environments, and this one offers abstract facilities like > connection, prepared statement, resultset, row, metdata and so on for > the application. > > The API implementation uses driver delegates, and insulates the > applications from the driver specific interfaces. As of now, a MySQL > implementation is available, with other databases engine supports in the > future plans. > > The API supports server side prepared sta tements and cursor based fetch > implemented in the MySQL driver. > > The implementation is currently available in 3 parts: > > 1) StdbCore project: This is primarily the API definitions and the > delegation logic > URL: http://www.squeaksource.com/StdbCore.html > > 2) StdbMysqlImpl project: This is the MySQL implementation of the > StdbCore API > URL: http://www.squeaksource.com/StdbMysqlImpl.html > > 3) StdbMysqlProtocol project: This is the underlying MySQL protocol > driver, and used by the MySQL API implementation > URL: http://www.squeaksource.com/StdbMysqlProtocol.html > > There is a package load ordering dependency (documented in the MySQL > implementation project). Please load the core and the protocol driver > packages first, before you load the implementation package. > > Combined, the packages has around 200 tests (most of them in the > protocol driver and the API implementation) and are running green on > Pharo 1.1.1 one click, Squeak 4.2 one click, Squeak 3.10 (with Seaside > 2-8-573 dev image) under Mac OS X 10.5.8 with MySQL server 5.0.67. > > This was in the making for some time; and I feel it is time to share it > with the community. I will continue to post more documentation and code > snippets in the project page Wiki sections. For now, looking up the > tests may be your best guide. > > Happy programming! > > Best, > Anindya Haldar > > > > >

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A small problem with ScaledDecimal
by Larry White Sept. 27, 2011

Sept. 27, 2011

Hi, I had a need to replace the printOn: implementation in ScaledDecimal so that it didn't include the scale. In other words, I don't want my users to see '3.02s2'. Being lazy, my first impulse was to remove the code from printOn: that appends the scale, but I realized I'd have to do that every time I upgraded my pharo version. Instead I tried to implement a subclass called DisplayableScaledDecimal and override printOn. That seems straightforward and smalltalky, but when I do math on instances of DisplayableScaledDecimal, the results are converted back to ScaledDecimal. Now I'm looking at re-implementing all the math logic in scaledDecimal to avoid that. The problem seems to be in the coerce: method, which reads: coerce: aNumber "Note: this quick hack could be replaced by double dispatching" aNumber class = self class ifTrue: [^self class newFromNumber: aNumber scale: (scale max: aNumber scale)]. (aNumber isFraction or: [aNumber isInteger]) ifTrue: [^self class newFromNumber: aNumber scale: scale]. ^aNumber I guess I could override coerce:, but that seems wrong. So my question to the smalltalk gods on the list is: Could this be fixed with double dispatching as the comment sort of suggests, and would it be a useful thing to do?

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www.squeakdbx.org temporally moved
by Mariano Martinez Peck Sept. 26, 2011

Sept. 26, 2011

Hi guys. www.squeakdbx.org was temporally moved to http://dbxtalk.smallworks.com.ar/ (thanks SmallWorks for always host our image) We didn't yet update the website to match DBXTalk project, but soon we will do it and when that happens we will register www.dbxtalk.org and shut down http://dbxtalk.smallworks.com.ar/ Cheers DBXTalk team

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Re: [Pharo-users] Is Smalltalk superior to any other technologly for the development of web and business application?
by Marcus Denker Sept. 25, 2011

Sept. 25, 2011

On Sep 23, 2011, at 10:11 PM, Miguel Moquillon wrote: > Just a link to an interesting post: > http://futuremint.com/smalltalk-and-seaside-versus-ruby-and-rails-i > > Enjoy reading ;-) > The only problem is that the post is already old and he is now back using Ruby... http://futuremint.com/once-again-enjoying-ruby (and even that post is old) Marcus -- Marcus Denker -- http://marcusdenker.de

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Pharo Sprint November 2011 - Noviembre 2011 @ Smalltalks 2011
by Guillermo Polito Sept. 24, 2011

Sept. 24, 2011

Hi! I'm gathering the attendants the Pharo Sprint the day before the Smalltalks2011 in Universidad Nacional de Quilmes, so we can guess the space and other requirements needed. If you are attending, please fill the form below :). Estoy juntando a la gente que quiera participar del Pharo Sprint el dÃa previo a la Smalltalks, en la Universidad Nacional de Quilmes. Si queres participar, completÃ¡ el formulario de abajo. Gracias, Thanks! Guille Si tienes problemas para visualizar o enviar este formulario, puedes rellenarlo online: https://spreadsheets.google.com/spreadsheet/viewform?formkey=dHlKdUdvYnF3c3… Pharo Sprint November 2011 - Noviembre 2011 I will attend to the Pharo Sprint on november 2 of 2011, from 2pm to 8pm, at Universidad Nacional de Quilmes, the day previous to the conference. AsistirÃ© al Pharo Sprint del miÃ©rcoles 2 de noviembre de 2011, desde las 14:00 a las 20:00, en la UNQui, dÃa previo a la conferencia. First and Last Name - Nombre y Apellido * Email * Con la tecnologÃa de Google Docs <http://docs.google.com> Informar sobre abusos<https://spreadsheets.google.com/spreadsheet/reportabuse?formkey=dHlKdUdvYnF…>- Condiciones del servicio <http://www.google.com/accounts/TOS> - Otros tÃ©rminos<http://www.google.com/google-d-s/terms.html>

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Is Smalltalk superior to any other technologly for the development of web and business application?
by Miguel Moquillon Sept. 23, 2011

Sept. 23, 2011

Just a link to an interesting post: http://futuremint.com/smalltalk-and-seaside-versus-ruby-and-rails-i Enjoy reading ;-)

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NUmber rounding
by Jeff Gray Sept. 23, 2011

Sept. 23, 2011

I am reading a list of numbers from a csv file. The file represents financial transactions so all the numbers are currency and they have zero, one or 2 decimal places Eg 1000 240.46 100.5 I use Number readFrom: to get from text to number. When I add all the amounts the answer comes out like: 306.65999999999985 I want to see 306.66 I had alook at Stef's chapter talking aboy 2s compliment and I'm guessing that this is something like that but I read most of it as: meow meow meow moew. Too hard :-) Can someone just tell me which class/method I need? Thanks. I know this might come across as lazy but my background is as an application developer and I'm just not that interested in the low level system guts. And I'm slightly lazy..... -- View this message in context: http://forum.world.st/NUmber-rounding-tp3835875p3835875.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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UITheme howto get patchworkUIThemeColorFor: the background of a PluggableTextMorph?
by Helene Bilbo Sept. 23, 2011

Sept. 23, 2011

Hi, iâm working on a UITheme and canât figure out, how to change the background of a PluggableTextMorph (UITheme>>textEditorNormalFillStyleFor:) and some other elements according to the patchworkUIThemeColor of the window they are part of. Is there any theme that does this or anybody has a hint? The effect would be, that all background would be colored, like on very old morphic themes: http://www.sra.co.jp/public/doc/GSletter/vol.35/squeak/squeak-5A.jpg but of course much nicer, perhaps looking like this: http://instinctivecode.com/images/portfolio/stickynotes.png best regards, helene. -- View this message in context: http://forum.world.st/UITheme-howto-get-patchworkUIThemeColorFor-the-backgr… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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TestRunner anomaly
by Larry White Sept. 22, 2011

Sept. 22, 2011

When I run my tests in TestRunner by clicking Run Selected, they all pass. When I run them by clicking Run Coverage, a couple fail. Does anyone know why that might be? thanks.

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Status of SSL on Pharo? (and some general questions on mail and IO)
by Larry White Sept. 21, 2011

Sept. 21, 2011

Hi, I'm looking for a way to send email using SSL. Googling I've found several conversations from earlier this year on the subject, including one thread from May and another from January. In the May thread it sounded like a project was getting kicked off to do something that might be official-ish. Has there been progress on this? Second question, while playing with mail in my pharo image, the entire image seems to block during the handshake/send. Is there a way around that? If not, would a solution perhaps be to run a separate image to send emails and communicate via a db or file system? Final question, does Pharo always block on IO? My impression was that all Smalltalks did at one time, but that some (visualworks? squeak?) had fixed that years ago. Thanks.

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Re: [Pharo-users] Generators
by Marcus Denker Sept. 21, 2011

Sept. 21, 2011

On Sep 20, 2011, at 3:50 PM, drush66 wrote: > I have found on StackOverflow that GNU and Squeak support Generators: > > http://stackoverflow.com/questions/6529815/how-are-coroutines-implemented-i… > > Could they be used with Pharo? According to this tracker entry: http://code.google.com/p/pharo/issues/detail?id=3527 Class Generator was added as 13009 very early in 1.3. Yet, in my 1.3 there is no class Generator... (nobody needed it, either...) I will re-open the report. -- Marcus Denker -- http://marcusdenker.de

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Moose presentation
by laurent laffont Sept. 21, 2011

Sept. 21, 2011

Hi, Doru has introduced Moose to my local developer group. This one hour presentation through Skype was recorded and you can watch it here: http://vimeo.com/29338546 Laurent

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