- Pharo-users - lists.pharo.org

Re: [Pharo-users] [Bug - Pharo 5.0] Remove a class but not remove for RPackage
by Blondeau Vincent April 13, 2016

April 13, 2016

Hello, First, which version of Pharo do you have? (run: Smalltalk lastUpdateString). Second, I cannot reproduce your bug. Can you create a simple and dummy example (with classes A and B for instance) that enlightens the problem? Cheers, Vincent De : Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] De la part de Yann Dubois EnvoyÃ© : mercredi 13 avril 2016 15:02 Ã : Any question about pharo is welcome Objet : [Pharo-users] [Bug - Pharo 5.0] Remove a class but not remove for RPackage Hello, When I delete a class, a window pop to inform me that some methods use this class. So I remove the methods because they are not usefull without my class to removed. But when I close the window, the methods stay on the Browser, so I remove this methods on the Browser. Then, I remove an other class and "BOOM" an error appears, the key which represents my class is not present in the SystemDictionnary (it's normal), but I can find the key in the RPackage metaclasses. !!!************************************************************************************* "Ce message et les piÃ¨ces jointes sont confidentiels et rÃ©servÃ©s Ã l'usage exclusif de ses destinataires. Il peut Ã©galement Ãªtre protÃ©gÃ© par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir immÃ©diatement l'expÃ©diteur et de le dÃ©truire. L'intÃ©gritÃ© du message ne pouvant Ãªtre assurÃ©e sur Internet, la responsabilitÃ© de Worldline ne pourra Ãªtre recherchÃ©e quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'expÃ©diteur ne donne aucune garantie Ã cet Ã©gard et sa responsabilitÃ© ne saurait Ãªtre recherchÃ©e pour tout dommage rÃ©sultant d'un virus transmis. This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Worldline liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted.!!!"

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SQLite bridge crashed Pharo 5.
by Offray Vladimir Luna CÃ¡rdenas April 13, 2016

April 13, 2016

Hi all, I'm working with visualizations a external dataset which contains 270k records. So the best strategy seems to bridge pharo with SQLite to keep requirements low while using Roassal to visualize aggregated information that is obtained from querying the database. That seemed working fine for a while, but just a few minutes ago my image started to crash and after a while it crashed beyond being useful (it doesn't start anymore). I have added the crash dump file, to see if anyone of you can help me making sense of it and trying to detect where is the failure. I imagine that there is something wrong about the way I'm making the query This is the suspect method: ==================== totalOffshoresByCountry "I load the offshores data from a SQLite database or cvs file" | queryResults | self dataLocation exists ifFalse: [ self downloadData ] ifTrue: [ database := (SQLiteConnection fileNamed: dataLocation fullName ) open. queryResults := database executeQuery: 'SELECT country_name, COUNT(*) AS "total_offshores" FROM (SELECT country_name, Description_ FROM nodesNW INNER JOIN node_countriesNW ON nodesNW.Unique_ID = node_countriesNW.NODEID1 ORDER BY country_name) GROUP BY country_name']. ^ queryResults ==================== I have restarted a new image, but I can not remember which package provides SQLiteConnection. I imagine is some migration of NBSQLite under UFFI, but I can not find it in the pharo catalog. Any help with this is welcomed. Cheers, Offray

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Conditional external dependencies in a Metacello BaselineOf?
by Damien Pollet April 13, 2016

April 13, 2016

I have a couple projects that I develop together; the first depending on the second, and both managed on GitHub (in separate repositories). The BaselineOf therefore expresses the dependency using repository: 'github://â¦' However, I'd like to locally change that to gitfiletree:// so that I can build new development images from scratch, with both projects ready to commit to gitfiletree, with minimal repo juggling and code reloading ? Is there a way to achieve that? Metacello project attributes? a git submodule? -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

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Re: [Pharo-users] FFI return by reference
by Thibault Raffaillac April 12, 2016

April 12, 2016

> I will not add for the moment that predefined types value holders? We would > need to add one for each type we support to be consistent, and document it, > and add tests. > And btw? you do have a generic holder? is just that you need to refine it to > what you want :) Couldn't we use FFIInt32? To me it would make sense to use the class to refer to the type, and an instance of it for a value holder in memory (this is not asking for a change, only reporting it looks strange). > My advise is that you go with what you need, we can consider add predefined > value holders later. Yep, I am sticking to the basic features as much as possible anyway. Cheers, Thibault

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New project: AR.Drone communication API in Pharo
by Carolina HernÃ¡ndez April 12, 2016

April 12, 2016

Hi, my name is Carolina Hernandez and I'm a Computer Engineering student at the University of Chile. As part of my final degree project, I'm creating a communication API for controlling the Parrot AR.Drone 2.0 from Pharo. I've just released an early version. The code is hosted in Smalltalkhub: http://smalltalkhub.com/#!/~CaroHernandez/ArDronePharo I also made a video of a test flight, where the AR.Drone is controlled using the API and keyboard: https://www.youtube.com/watch?v=d8rERiBoD0o I couldn't find any direct way to use a joystick in Pharo, if someone knows about one, I'd like to integrate it to my code. Development and tests have been done in Pharo 4.0 and ubuntu 12.04 Comments are welcome! Caro

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MessageDialogWindow(s)
by Robert J Rothwell April 12, 2016

April 12, 2016

Hello, In Pharo 5.0 #50680 MessageDialogWindow new open displays a message box with no text. Should (MessageDialogWindow new text: 'Hello') open work? I get a stack trace on CompositionScanner if I try to set the text. Also, is there a way to display the dialog modally (relative to your application)? Thank you, Rob

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finding Pharo Launcher
by Mark Bestley April 11, 2016

April 11, 2016

where can you get a ready to run Pharo Launcher from (I am interested in OSX but other OSes should be answered as well). I would like a Pharo 5 64 bit one to try but I can understand only a Pharo 4 one being advertised. I looked on the Pharo Downloads page <http://pharo.org/download> and could not find it. Googling just gives announcements of it and old messages for email lists. and latest is <https://pharoweekly.wordpress.com/2016/01/15/pharo-launcher-spur-and-prespu…> which gives the Smalltalk Hub link which is not much help to getting started I suspect it just needs a small edit to the downloads page to make it findable for me but if it is to be used as an entry point then perhaps it need to be made more obvious on the pharo.org pages. -- Thanks Mark

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Re: [Pharo-users] Passing nil with FFI
by Thibault Raffaillac April 11, 2016

April 11, 2016

Great, that worked, thanks! > Hi, > > marshalling in UFFI is complex and sometimes not worthy, so we do not do > auto-conversion between nil in smalltalk o zero to NULL (yes, I know NULL=0, > but not for UFFI who is waiting a object type). > In this case (since it expects a kind of external object) you have to do: > > SDL2 glCreateContext: FFIExternalObject null. > > Esteban > > > > On 07 Apr 2016, at 12:06, Thibault Raffaillac > > <thibault.raffaillac(a)inria.fr> wrote: > > > > Hi, > > > > I am having trouble passing nil to a function with FFI (i.e. NULL, i.e. 0). > > For example: SDL2 glCreateContext: nil. > > The function expects a subclass of FFIExternalObject, so calls instVarAt: 1 > > but nil has no such field! > > Am I missing something? (like a special nil instance of FFIExternalObject) > > Note however that putting nil works when FFI expects a String. > > > > Cheers, > > Thibault Raffaillac > >

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About Box
by Torsten Bergmann April 11, 2016

April 11, 2016

Hi, >This is my first week with Pharo So welcome >This is my first week in a LONG time too >Also my first week with Pharo, and first week with Smalltalk in over 20 years. Welcome back ;) >but I cannot seem to create a HELP|ABOUT dialog Note that in Pharo 5 I changed the about box to be implemented in "AboutDialogWindow" (a subclass of LongMessageDialogWindow) to make this more explicit and more easy to find. if you already work with Pharo 5 (which will be ready in a few days) check the method: AboutDialogWindow openForPharo Also note that one can search by opening Spotter. Just SHIFT+ENTER and then type "about". Thanks T. http://astares.blogspot.com

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Solution: ODBC - could not coerce arguments
by Robert Kuszinger April 10, 2016

April 10, 2016

Hi All, Just for the records, I've found the answer finally on my previous question. YES it was an encoding problem. It is your responsibility to know how your ODBC link (in ODBC administrator) is configured and what encoding it is waiting for. All strings must be passed for the ODBC classes correctly encoded. In my example it was CP1250. *encodedquery := yourquery* *encodeWith: (ZnByteEncoder newForEncoding: 'cp1250').* (Yes, Zn... classes are present as I'm making it for web) It results in a ByteArray but don't worry, ODBC system accepts it in *execute:* and maybe its other messages as well. Best regards Robert

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