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[Pharo-project] Instantiations forum moved to forum.world.st!
by Geert Claes May 7, 2011

May 7, 2011

I am happy to announce that Instantions' forum has joined all the other forums on http://forum.world.st forum.world.st and is now available at http://forum.world.st/Instantiations-f3404935.html forum.world.st/Instantiations-f3404935.html -- View this message in context: http://forum.world.st/Instantiations-forum-moved-to-forum-world-st-tp350290… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] Tutorial on Announcements
by DougEdmunds May 7, 2011

May 7, 2011

http://dougedmunds.com/pmwiki.php?n=Pharo.AnnouncementsTutorial What you can get out of this tutorial and sample code How to use Announcements Ideas on building a GUI Associating buttons with actions Pulling text out of a text field morph. Convert text to numbers using exception handling How to create and exit an endless loop Setting process priority -- View this message in context: http://forum.world.st/Tutorial-on-Announcements-tp3485040p3485040.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] Relational Databases [WAS] Re: Nile tests red - Pharo 1.3
by Mariano Martinez Peck May 6, 2011

May 6, 2011

On Fri, May 6, 2011 at 10:55 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > > On May 6, 2011, at 10:44 AM, Alain rastoul wrote: > > > I used odbc-ffi and they are serious problem with the single threaded vm, > you can lock the vm with only 2 connections. > > That's what I want to check with dbx. I m also interested in glorp. > > I would really like to have a good layer build on glorp to support easy > CRUDE in Smalltalk > The problem of Glorp was that it is a bit heavyweight. > Well...DBXTalk is working on several fronts: 1) Port the new GLorp to Pharo: in fact, Guillermo has already ONLY 15 red tests over 800 :) with the new port. Only with Postgres....but we will move soon to the rest. 2) Guille will continue to port the Glorp Active Record package, which is kind of what you want 3) Santiago is working in a Magritte based tool to describe your model and be able to do easy CRUD. Cheers Mariano > > > . Sqlite is good for standalone or small apps. > > I'm talking of small to medium business systems from 1-10 users (small) > to 500 (medium) computer users - where customers have dba and other > admistrators who impose things like sql server or oracle. > > Postgresql could be also a player - don't know. > > I feel that pharo could take a place here with seaside apps > > > > -- > > Alain_rastoul > > > > > > > -- Mariano http://marianopeck.wordpress.com

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[Pharo-project] doesNotUnderstand:/createActualMessageTo: for zero-argument sends appears to imply the need for an extra stack slot in methods
by Eliot Miranda May 6, 2011

May 6, 2011

Hi All, could you check my reasoning here. I think I've found a serious bug in the VM with doesNotUnderstand: processing for zero-argument sends and the calculation of the necessary stack size in MethodNode>>generate:* (senders of CompiledMethod>>needsFrameSize:). The bug causes a push beyond the end of a context, overwriting the header of the following object, when an MNU occurs for a zero-argument send when the stack is full. If you look at Interpreter>>createActualMessageTo: it does the following to push the message created as the argument of the doesNotUnderstand: self pop: argumentCount thenPush: message If argumentCount is zero this pushes an item on the stack. If the stack is full at this point (the receiver of the not-understood message is the last item in the context) then the push will be out of bound of the activeContext's stack and overwrite the first word of the following object's header. We observe this with a Newspeak application at Cadence and see a subsequent VM crash. 1. am I right? 2. is this an old bug? 3. did this, or did this not, affect Smalltalk-80 v2 and e.g. the Dorado implementation, and if so why (e.g. was the message of an MNU not pushed onto the stack, and instead MNUs activated by special code?, or was the activeContext not on the heap? or...) 4. what's the right fix? It seems to me that the right fix is simply to add one to the needed stack depth, with an explanatory comment, but in senders of CompiledMethod>>needsFrameSize: or in CompiledMethod>>needsFrameSize:? Trying to avoid pushing the argument of an MNU is going to involve lots of changes to the VM and will be tricky and likely have a bug tail. best, Eliot

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[Pharo-project] ODBC Connection in Pharo 1.1.1
by Torsten Bergmann May 6, 2011

May 6, 2011

Did you see: http://www.pharocasts.com/2010/12/access-database-through-odbc.html -- NEU: FreePhone - kostenlos mobil telefonieren und surfen! Jetzt informieren: http://www.gmx.net/de/go/freephone

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[Pharo-project] Recent changes on Pharo 1.3: ObjectStringConverter donÂ´t works like ObjectTransformedStringConverter
by nullPointer May 6, 2011

May 6, 2011

I see now a change on Pharo 1.3 in the way for configure a text field for accept only numeric values. Before I configure a text field of that way: aNumericTextField converter: ((ObjectTransformedStringConverter forClass: Integer) transformBlock: [:s | s select: [:c | c isDigit]] ). That allow input only numeric chars. Now I see the change of class ObjectStringConverter and I try: aNumericTextField converter: ObjectStringConverter new configureForIntegers. but donÂ´t works. Somebody knows what happens? Regards -- View this message in context: http://forum.world.st/Recent-changes-on-Pharo-1-3-ObjectStringConverter-don… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] What is Configuration? (was: Re: [squeak-dev] Personalized systems with Treated)
by Chris Muller May 6, 2011

May 6, 2011

> Chris. Metacello scripts are object specs and to me this is just great because they are objects > and with objects we can do a lot. Checking, transforming...... So of course hacking a little script is fast and > Metacello requires some care but I can tell you that for us this is **hyper** important (and not just > as some person may think because we like complex stuff - because this is plain wrong) > because Metacello are first class ***objects*** scripts. I am an objectician almost to a fault. I tend to want to solve every problem with a object model. Everyone knows I love objects. But I also view software as a _means_ not an end. A means to do something in the real world that I want done. In this case, I simply want to do Configuration. Configuration is not just about loading packages; it's about _configuring_ a system. It's about taking a VM + Legacy-Image and configuring it to do something practical in the real-world. If "Legacy-Image" is our dream super-stripped 1MB Spoon type of image; an image with just a Compiler and no MC or any tools, and I want to configure it for an embedded system, then this is where the Smalltalk-rubber hits the road: The person developing this type system will be configuring THAT image with a config-file, not an object-model. VM + Legacy-Image + config-file (config-file is just a .st, .sar, or anything else that can be interpreted by the Legacy-Image). Using an object-model in this case is counterproductive because just to be able to _interpret_ that (Metacello) object model, you have to load a gazillion packages into the image which is targeted to be embedded, just to "do" the configuring. This is why I think a "catalog of configuration files" is appropriate; so that the existence of this type of system can be documented alongside the existence of all other kinds of systems including Metacello-managed ones. Whether someone wants to bring Metacello into their life to do package management is their personal choice. But that is separate from having their application listed in The Catalog of ALL available Squeak (and, I hope, Pharo) titles in one place, regardless of whether they use Metacello or any other specific technology. - Chris

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Re: [Pharo-project] ODBC Connection in Pharo 1.1.1
by sourav roy May 6, 2011

May 6, 2011

Great...Thanks for the info...This will really help me in exploring Smalltalk.RegardsSourav | Bangalore | India Original message From:"Serge Stinckwich"< serge.stinckwich(a)gmail.com >Date: 6 May 11 12:59:30Subject: Re: [Pharoproject] ODBC Connection in Pharo 1.1.1To: Pharoproject(a)lists.gforge.inria.fr; Sudhakar Krishnamachari Hi Sourav,I think you need also to connect to Indian Smalltalkers. There aresome at Bengalore.I hope to visit them some day soon.Have a look at the indian Smalltalk mailinglist here:http://tech.groups.yahoo.com/group/smalltalkindia/You could also contact Skrish (in CC).Regards,On Fri, May 6, 2011 at 2:05 PM, sourav roywrote:>> Hi All,>> Can any one explain me how to establish an ODBC connection in> PharoSmalltalk and Database programming (Any document or explanation).>> Thanks&Regards>> Sourav | Bangalore | India>> Dear pharoproject ! Get Yourself a cool, short @in.com Email ID now!>> Dear pharoproject ! Get Yourself a cool, short @in.com Email ID now! Se rge StinckwichUMI UMMISCO 209 (IRD/UPMC), Hanoi, VietnamEvery DSL ends up being Smalltalkhttp://doesnotunderstand.org/Get Yourself a cool, short @in.com Email ID now!

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Re: [Pharo-project] Popularity of Smalltalk in Software Industry
by sourav roy May 6, 2011

May 6, 2011

HI All,I really got lost into this thread and was blown by the conversation which took place here ;). but i feel good as this has led people to think about the need for a serious documentation. And i feel it will be much welcome by the newbies to Smalltalk and will help in popularizing it.Regards,Sourav | Bangalore | India Original message From:"Nicolas Cellier"< nicolas.cellier.aka.nice(a)gmail.com >Date: 6 May 11 15:37:49Subject: Re: [Pharoproject] Popularity of Smalltalk in Software IndustryTo: Pharoproject(a)lists.gforge.inria.frGuys, this is crazy, this is a runaway thread ;)Please, please, a bit more empathy for newcomers would not hurt:change the subject in such cases.Welcome to Sourav, don't be afraid to ask this list for anything obscure.and congratulations to Toon for initial answer.Nicolas2011/5/6 StÃ©phane Ducasse :> Ok if some good souls want to give a try to generate html.>> Stef>>>>> Probably we should find a way to generate HTML from PDF or Latex.>> Any ideas?>>>> I've used latex2html several years ago.>>>> +1 for html>>>> Laurent.>>>>>>>> >>>> Now for the documentation when did you send an help documentation for any part of the system?>> >>>> Or a bug fix?>> >>>> I find quite funny that people always talk but few are doing. We welcome comments/examples help.>> >>> No need to get into a catfight here :)>> >>>> >> No this is not my point. But what do people really do to help?>> >>>> >>> I do agree with Stefan, as well as with you that we could help; but I'm unaware of a good documentation effort outside of the image to start with. Camillo's website project might be the best effort I've seen until now; but then I didn't really look either. Maybe I missed some great website?>> >>>> >> If this is just to spit out class comment on html I do not call that a documentation.>> >> Now we can take the book contents and generate html>> >> We have 350 pages in the first book and the same in the second one.>> >> People are free to join and write o ne or two chapters.>> >>> > StÃ©phane,>> >>> > Of course you are right: wining/complaining doesn't help, only action does. We need more people like Laurent focusing on documentation.>> >>> > I for one think that the well written, high quality books that exist (PBE, Seaside Book) are *very valuable*, much better than confusing wiki site (although these have their place as well).>> >>> > But the other point is: in most other popular languages, what current, young developers do, when they get an error that they don't understand is copy/paste the literal text in Google and in a surprisingly large number of cases you find some real answers in the first page.>> >>> > This is also related to popularity of course.>> >>> > Sven>>>>>>>>>Get Yourself a cool, short @in.com Email ID now!

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[Pharo-project] Nile tests red - Pharo 1.3
by Alain_Rastoul May 6, 2011

May 6, 2011

Hi, I have a changeset to fix most tests -all except one at this time- of Nile, most of the red tests are the same errors related to NewParagraph, NSTranscripter, so the changeset is very small but I don't the procedure to submit a fix ? Do I add a comment to the issue at code.google with the attached changeset ? http://code.google.com/p/pharo/issues/detail?id=4051 Do someone review the code (as I am new to Pharo and don't know much of Nile , Transcripter ) ? Do someone - ... who? ... - incorporate the changeset in the sources of the package ? TIA Alain

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