Squeak-dev July 2008

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136 participants
183 discussions

Re: Smalltalk customers
by Torsten Bergmann 31 Jul '08

31 Jul '08

>RUT-K ("Rechnerunterstütztes Trassenmanagement Konstruktion") is a >multi-user client-server system for the timetable management of big >railway systems. I once worked in this project - a video of the application is available in german: http://www.bahntv-online.de/btvo/site/index.php?s=5600&ids=139373 At http://www.railml.org/documents/events/slides/2006-09-22_db_vakhtel-xmlkss.… you can find two screenshots on page 5 and 6. And here are some more Smalltalk applications: - GEVAS Software in Munich develops a traffic management tool based on VisualWorks (http://www.gevas.eu/index.php?id=1&L=1) - Objectraku's military planning tool "Sextant" is built using VisualAge http://www.objectraku.com/06_support/demos/resources/Sextant_TacScene_Lejeu… - Versicherungskammer Bayern is using VisualAge for its insurance agency information system "VerIA" since 10 years http://groups.google.de/group/comp.lang.smalltalk/browse_thread/thread/e2f6… - IBM used VisualAge Smalltalk to build the whole VisualAge line (VisualAge for Java, VisualAge for C++, ...) - Plopp (which is based on Squeak) http://www.planet-plopp.de/ - The Dolphin people are now using their own Smalltalk tool to build portfolio analysis software http://www.alchemetrics.org/ - JWARS is a military simulation tool written in VisualAge Smalltalk (just google it) - chip company AMD is using Smalltalk http://www.heeg.de/downloads/vortraege/Vortrag_OOP2006/OOP2006_vortrag.pdf - MetaCase is written in Smalltalk http://www.metacase.com/mep/ - Hylands Underwater Vehicles use Squeak http://huv.com/ - Expecco is a test tool written in Smalltalk/X http://www.exept.de - 3-D virtual collaboration solutions built in Squeak/Croquet http://www.qwaq.com - Auctomatic (Squeak/Seaside) http://www.auctomatic.com - Beno - for network and school is written in Dolphin Smalltalk http://straightec.de/beno/index.html (click on demo) ... See also http://www.goodstart.com/whousessmalltalk.php?page=3 for another list Bye Torsten -- GMX Kostenlose Spiele: Einfach online spielen und Spaß haben mit Pastry Passion! http://games.entertainment.gmx.net/de/entertainment/games/free/puzzle/61691…

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Re: [squeak-dev] Smalltalk customers
by Alan Knight 31 Jul '08

31 Jul '08

There's a list of Cincom success stories at http://www.cincom.com/common/success-stories/ although I think it mixes all of them, and doesn't separate out the Smalltalk ones. I didn't see anyone mention JP Morgan's derivatives business yet, which is definitely in there. Or AMD's semiconductor manufacturing. There should be a presentation from Thor Raabe at Smalltalk Solutions a few years back talking about a different semiconductor manufacturing story. The Q&A for that had the lovely quote "Q: So what percentage of the silicon chips in the world would you say pass through a machine controlled by Smalltalk at some point during their fabrication. A: I'd have to say 100%" And of course there's Key Technology's french-fry and other food sorting equipment - not the sort of domain people often think about. Oddly, I couldn't seem to get to the marketing success stories from the cincomsmalltalk.com site <nudges Jim Robertson>. At 03:37 AM 7/31/2008, Damien Cassou wrote: >Hi, I would like to present Smalltalk to my colleagues because they all think it's an old language of no interest which nobody uses. To prove them they are false, I would like to build a list of companies who are using Smalltalk every day. Can you please give me the names of your companies if they are using Smalltalk? Thank you very much -- Damien Cassou Peter von der AhÃ©: Â«I'm beginning to see why Gilad wished us good luckÂ». (http://blogs.sun.com/ahe/entry/override_snafu) -- Alan Knight [|], Engineering Manager, Cincom Smalltalk knight(a)acm.org aknight(a)cincom.com http://www.cincom.com/smalltalk

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Re: [squeak-dev] Smalltalk customers
by Alan Knight 31 Jul '08

31 Jul '08

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Squeak and MySQL?
by Andreas Raab 31 Jul '08

31 Jul '08

Folks - Is anyone out there using Squeak with MySQL? If so, what are you using to connect the two? The only thing that I've found that looks remotely applicable is http://map.squeak.org/packagebyname/mysql but it looks rather outdated (last supported Squeak version appears to be 3.7) and it's licensed under GPL which is an issue. Any pointers would be greatly welcome. Please note that I'm not looking for a persistence solution - I'm looking for something which I can use to dump a few entries into MySQL so that they can be digested elsewhere. Thanks, - Andreas

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How to load a .pr file avoiding its maximization
by Germán Arduino 30 Jul '08

30 Jul '08

Hi: I need to load external project files (.pr) on my image, but I need that they remains as thumbnails, without maximizing and becoming the active project. >From one method I need to navigate a directory tree, and load each project I found and make some operations with each one. But as each project get loaded, also get maximized and the execution method broken. ¿It's possible to get the project loaded as thumbnail avoiding the maximization? Any help will be appreciated. Cheers. -- Germán S. Arduino http://www.arsol.biz http://www.arsol.net

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[ANN] Exupery 0.14 is released
by bryce＠kampjes.demon.co.uk 30 Jul '08

30 Jul '08

The major improvement is to the speed of register allocation. I've fixed a couple of major performance problems so register allocation takes 50% of compilation time even for the largest methods. Register allocation now appears to take roughly linear time. Installation instructions are here: http://wiki.squeak.org/squeak/3945 There's still plenty of room to improve compilation time. Every stage copies the entire intermediate graph to produce the input to the next stage which is redundant, most stages only change a few places. The register allocator's liveness analyser still uses Sets to represent which variables are live rather than bit vectors. This release can compile cascades, the last missing core language feature. Exupery still can only compile a handful of the core primitives, it only compiles #at: for pointer objects. Cascades were added because they were used more in 3.10, the choice was either delete 2 system tests or add cascades. I delayed the release to add cascades. There's a few bug fixes of old bugs but this release is not noticeably more reliable than the previous release. It should be a bit more reliable though, especially when running the new Exupery VM. The new Exupery VM just has a single bug fix in it. Here's the benchmarks: arithmaticLoopBenchmark 414 compiled 94 ratio: 4.404 bytecodeBenchmark 726 compiled 264 ratio: 2.750 sendBenchmark 707 compiled 454 ratio: 1.557 doLoopsBenchmark 388 compiled 398 ratio: 0.975 pointCreation 433 compiled 423 ratio: 1.024 largeExplorers 257 compiled 258 ratio: 0.996 compilerBenchmark 248 compiled 249 ratio: 0.996 Cumulative Time 419 compiled 275 ratio 1.519 ExuperyBenchmarks>>arithmeticLoop 105ms SmallInteger>>benchmark 362ms InstructionStream>>interpretExtension:in:for: 6051ms Average 612.691 The key benchmark for this release is the last one, compiling interpretExtension:in:for: which now only takes 6 seconds. With previous version of the compiler it used to take over 2 minutes to compile. The change in times in the other benchmarks are mostly due to me upgrading from an Athlon 64 2.2GHz to a Core 2 3.0GHz. The register allocator should be slightly more efficient especially when compiling send heavy code. Reliability and compile time performance has dominated the last few releases. Now run time performance and reliability are the biggest issues. Exupery still can crash after about an hour's active use depending on what's being done. Bryce

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question on #ifCurtailed:
by Brent Pinkney 30 Jul '08

30 Jul '08

Hi, What is the expected result of [ 1 / 0 ] ifCurtailed: [ 2 ] I had thought #ifCurtailed: was used to catch any exceptions? Help -- Brent

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Olpc pix, just sharing some favorites
by Jerome Peace 30 Jul '08

30 Jul '08

Olpc pix In browsing the oplc picture stream I found this unexpectedly: Mongolian maintenance: http://flickr.com/photos/olpc/2606363169/ note the elbow on the display screen. Apparently if you show one xo what can happen to it the others behave. The kids seem fascinated: http://flickr.com/photos/olpc/2606362543/ http://flickr.com/photos/olpc/2606362453/ The rest of the photos bear browsing too. These are just my favorites from the mongolian series. Yours in curiosity and service, --Jerome Peace

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re: Squeak and MySQL?
by iansimpson＠freenet.co.uk 30 Jul '08

30 Jul '08

I use the MySQL driver from the package universe with a 3.9-dev image. Ian.

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Re: [squeak-dev] more on ... playing MPEG files ... resolution
by John Richards 30 Jul '08

30 Jul '08

Thanks to help from Edgar De Cleene it was determined that re-encoding the original MPEG file using ffmpegx allowed it to be played properly in Squeak. The format after clean up was still MPEG-1 muxed but whatever ffmpegx did to it made it playable, both video and audio. Edgar also points out that to run videos in 3.10 you should first load MoviesFor3dot10 (not so for 3.8 and 3.9). John

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