Squeak-dev September 2008

squeak-dev@lists.squeakfoundation.org

120 participants
118 discussions

Float plugin
by Ang Beepeng 11 Sep '08

11 Sep '08

I have wrote a named primitive that returns float, as follows, 1 primsIdentityOfFloat":aFloat" 2 "primitive returning a floating point" 3 4 |aFloat| 5 self export: true. 6 self inline: false. 7 8 self returnTypeC: 'float'. 9 aFloat := interpreterProxy stackFloatValue: 0. 10 self var: aFloat type:' float '. 11 interpreterProxy pop:2. 12 interpreterProxy push: (interpreterProxy floatObjectOf: aFloat). The primitive returns correct answer, but only until fourth or fifth decimal points. For example, if the answer is "4.88888", primitive returns "4.888880014419556". I added several steps, line 8 , 10 & 12, trying to return or declare the correct data type or object both in C and also in Smalltalk. But I still do not get the correct answer. What can be corrected for higher precision answer? Thanks. Ang Beepeng -- View this message in context: http://www.nabble.com/Float-plugin-tp19395816p19395816.html Sent from the Squeak - Dev mailing list archive at Nabble.com.

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Fwd: Problem with fonts on Linux with compositing activated
by laurent laffont 11 Sep '08

11 Sep '08

Hi, I've switched to KDE4 and played with composite rendering. With last squeak dev images some fonts are not rendered: it seems to be interpreted as a transparent region by the composite manager (see screenshot). I've tested this on my two debian boxes. This problem is not present in sq3.9.1-7075dev08.07.1 image, so I suppose it's due to NiceFont integration ? Regards, -- Laurent Laffont -- Laurent Laffont <l.laffont(a)temis-france.com> TEMIS 48, Avenue Jean Jaurès 74800 La Roche sur Foron Tél. : 04 50 97 49 91 Fax : 04 50 97 49 94 http://www.temis-france.com

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Hobbes woes
by Michael Haupt 11 Sep '08

11 Sep '08

Dear list, I'm trying to get Hobbes (as available from http://wwwlehre.ba-stuttgart.de/~helbig/st80/hobbes) running with the Apple Smalltalk image from the ESUG 2007 DVD. The Hobbes sources have been filed into a Squeak 3.10.2 image. Doing "SmalltalkEmulator openAPDAWith: InterpreterWorld" first stumbles over two missing methods in SystemDictionary that are rather trivial to provide, but then things break saying that OrderedCollection class >> accumulatePairsForBecomeIn: is not understood. That method is nowhere to be found in that image, and also not in Squeak 3.6, which was, I believe, the version of Squeak Hobbes was initially ported to. What does it do? How could it be implemented? In other words: has anyone successfully started Hobbes in (recent or less recent) Squeak? Best, Michael

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[Quote] From Andrés Valloud Book
by Noury Bouraqadi 10 Sep '08

10 Sep '08

Hi, At the latest ESUG conference held in Amsterdam, I got Andrés' Book "A Mentoring Course on Smalltalk". It's fun to read. An example is the following quotation that I want to share with you. "Or let's say you would like to have lunch with a friend. In an assembler or obfuscated C world, you would reach inside your friend's mind and manipulate values and pointers until you made lunch appear attractive. You might even tickle the stomach to get the appetite going. But Smalltalk imposes much more civilized manners. In the same way that your friend is not a struct{...}, objects are not allowed to arbitrarily cross distinctions and mess with internal details. Instead, objects must communicate by means of messages." Thanks Andrés! Noury Bouraqadi ------------------------------------------------------------------ Dr. Noury Bouraqadi - Enseignant/Chercheur Responsable de l'enseignement de l'informatique ARMINES - Ecole des Mines de Douai - Dept. I.A. http://vst.ensm-douai.fr/noury European Smalltalk Users Group Board http://www.esug.org ------------------------------------------------------------------

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Squeak iPhone port now available
by Michael Rueger 10 Sep '08

10 Sep '08

Hello, we are proud to announce that the Squeak iPhone/Touch port is now available at http://isqueak.org More information, the source repository and the mailing list is available on the site. Kudos go to ESUG which sponsors the ongoing work. Due to the legal requirements of the Apple Developer agreement at this time we cannot distribute a fully functional Squeak VM via the Apple Store. However Apple developers can deploy the VM as an Ad Hoc VM for testing to a limited number of devices. See http://isqueak.org/AdHocVM for information on how you can obtain a VM for testing purposes. People who have access to the Apple SDK can compile and run the available port in the emulator. Licensed Apple developers can also deploy the compiled system to their developer devices. John & Michael -- =========================================================================== John M. McIntosh <johnmci(a)smalltalkconsulting.com> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ===========================================================================

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Buildroot Package?
by Udo Schneider 09 Sep '08

09 Sep '08

All, I'm currently fighting with Squeak in a buildroot environment. I'm currently (cross-)compiling Squeak using buildroot for an ARM target successfully. However I neither managed to make a static binary with all modules linked in nor getting the modules loaded dynamically. Before I dig deep into the Squeak Build System and try to adapt it to buildroot ... Did anybody did this successfully already? CU, Udo

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FreeType (FT2Plugin) on 64Bit Linux?
by John Thornborrow 09 Sep '08

09 Sep '08

Hi all, has anyone successfully built the FreeType plugin on 64Bit (x86) Linux? I'm trying to do this myself (via VMMaker) but am receiving an error in my terminal: localhost opt # squeak unix-3.10-3.image ioLoadModule(/usr/local/lib/squeak/3.10-1/FT2Plugin): /usr/local/lib/squeak/3.10-1/FT2Plugin: wrong ELF class: ELFCLASS32 Any advice greatly appreciated! John ****************************************************************************************************************************************** This email is from Pinesoft Limited. Its contents are confidential to the intended recipient(s) at the email address(es) to which it has been addressed. It may not be disclosed to or used by anyone other than the addressee(s), nor may it be copied in anyway. If received in error, please contact the sender, then delete it from your system. Although this email and attachments are believed to be free of virus, or any other defect which might affect any computer or IT system into which they are received and opened, it is the responsibility of the recipient to ensure that they are virus free and no responsibility is accepted by Pinesoft for any loss or damage arising in any way from receipt or use thereof. ******************************************************************************************************************************************* Pinesoft Limited are registered in England, Registered number: 2914825. Registered office: 266-268 High Street, Waltham Cross, Herts, EN8 7EA

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The Squeak Random Number Generator
by Jim Rosenberg 09 Sep '08

09 Sep '08

I'm getting very queasy feelings about Random. My understanding of the linear congruence random number generator algorithm is that it depends (crucially) on doing exact integer arithmetic with enough precision to hold all the digits in the multiplication at its heart. Using floating point arithmetic for a linear congruence algorithm is one of the classic ways of implementing a random number generator that is badly flawed. In my version of Squeak (3.8) the class Random seems to be using floats. Uh oh. Can somebody comment? Has the Squeak random number generator ever been tested? (Knuth gives a whole raft of tests ...)

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GLASS on Tour
by James Foster 08 Sep '08

08 Sep '08

Next week I’ll be making the following visits showing Seaside to (mostly) non-Smalltalk audiences: * Monday, September 15: Columbus (Columbus Ruby Brigade) * Tuesday, September 16: Minneapolis/St. Paul (Object Technology User’s Group) * Wednesday, September 17: Detroit (Detroit Metro Ruby Meetup) * Thursday, September 18: Cincinnati (Agile Round Table) Smalltalkers are invited to come! See http://programminggems.wordpress.com/2008/09/05/september-road-show/ for more details. James Foster

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Problem writing special ascii characters to a .txt file (Mac osX)
by Javier Reyes 08 Sep '08

08 Sep '08

Hello All, I am using text morphs which may contain extended ascii characters (in my case spanish characters 'ñáéíóú'). When I save those morphs and bring them back to screen everything works fine. My problem comes when I write the morphs contents to a plain .txt file (which in my case has to be opened with TextEdit in Mac Osx). In that case the special characters are expanded into several. I am working with Squeak 3.9 in Mac OsX. I have tried UTF8TextConverter but I am obviously doing something wrong (My knowledge of this issue is really scarce) . My code can be sumarized with this snippet. *tm := TextMorph new openInHand.* (I write inside the morph some text contaning special chars, such as 'bañándose') (Then I write it to a file)* utfString := (tm contents string) convertToWithConverter: (UTF8TextConverter new). aFile:= CrLfFileStream forceNewFileNamed: './myfile.txt'. aFile nextPutAll: utfString. aFile close.* And that's it. When I open the file in TextEdit I get 'ba√É¬±√É¬°ndose'. I have tried out some other bizarre strategies but they dont work either :-( Thanks very much for your help, Javier

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