Squeak-dev May 2007

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150 participants
233 discussions

Small demo
by Pavel Krivanek 25 May '07

25 May '07

Hi, here's a small flash demo of the Magritte based model editor with direct code generation: http://comtalk.net/public/tmp/shorebase1.htm I will publish it after some cleanup very soon. Cheers, -- Pavel

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Squeak-fr booth at 8th Libre Software Meeting
by Serge Stinckwich 25 May '07

25 May '07

Hi all, the french Squeak and Smalltalk community will share a booth with RubyFrance at the 8th Libre Software Meeting (http://www.rmll.info/?lang=en) in Amiens, France (not too far away from belgium or germany). There is more than 1500 visitors each year. We setup an organization page on the french Wiki : http://community.ofset.org/wiki/Squeak_au_RMLL_2007 We are also looking for help :-) The access is free and the hosting are very cheap (less than 10 euros/per night). Damien Cassou and i will also make a talk about Smalltalk and Seaside. -- Serge Stinckwich http://doesnotunderstand.free.fr/

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3.10alpha Process Browser weirdness
by subbukk 25 May '07

25 May '07

Hi, In 3.10alpha on Linux, open Process Browser -> event tickler ->on:do: method I get a pop-up stating that handlerActive appears to be unused, but handlerActive is set to true in this method. The error also occurs on 3.9. Is this a bug? .. Subbu

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Still seeking a Smalltalker for a post-doc position
by Noury Bouraqadi 25 May '07

25 May '07

http://csl.ensm-douai.fr/noury/ SmalltalkJobAndInternshipOffers#2007-04-05b Noury ------------------------------------------------------------------ Dr. Noury Bouraqadi - Enseignant/Chercheur Responsable de l'option I.S.I.C. ARMINES - Ecole des Mines de Douai - Dept. I.A. http://csl.ensm-douai.fr/noury European Smalltalk Users Group Board http://www.esug.org ------------------------------------------------------------------

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Some optimization for fun
by Göran Krampe 25 May '07

25 May '07

Hi all! I stumbled over a guy looking at Squeak performance and decided to see if I could optimize his particular problem. I ended up writing a highly optimized version of #printString in class SmallInteger. Don't know if it is of general interest but it does give a speedup of sending #printString to SmallIntegers around 4x I think. See my comment here: http://curiousprogrammer.wordpress.com/2007/04/11/is-squeak-smalltalk-slow/ regards, Göran

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SuperCollider Morphs for Squeak
by Cesare Marilungo 25 May '07

25 May '07

I have just released the code I've written so far to use Squeak as an environment for programming and creating GUIs for SuperCollider. It's just a tiny project to organize and manipulate code for SuperCollider and to control/interact with it. No rocket science. It may not work on MacOS X or, even more so, on Win32 since it depends on OSProcess, which as far as I know is fully implemented only on gnu/Linux. More info here: http://www.cesaremarilungo.com/sw/supercollider-morphs-for-squeak Note for the folks on the SuperCollider list: the screencast is a newer one. It's not the same I've posted before. Any kind of feedback is really appreciated. Cheers, c. -- http://www.cesaremarilungo.com

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Missing Halo Icon - HELP/About
by mstram 25 May '07

25 May '07

As a new "Squeaker" I find the Halo mechanism very handy. But there's one missing icon that I'm sure most newbies and probably most other users, who aren't "hard-core" programmers miss : The HELP/ABOUT icon !!!!! I.E, I click on the the 'Add a new Morph' menu item, and there are ~400 morphs to choose from, some with somewhat descriptive names. But many of them appear on the workspace as just a colored square. Ok, now what ? .. I ask myself. Myself answers, "Use the Browser (Luke)". Ok, so I get the browser for the Morph, and what is the usual display under the Comment section for the Class ? : THIS CLASS HAS NO COMMENT! Perfect. As the "old" ... uh not so old saying goes for comments / documentation : "It was hard to write ... it should be hard to read (or to use ... apparently). Sigh. Mike -- View this message in context: http://www.nabble.com/Missing-Halo-Icon----HELP-About-tf3815694.html#a10801… Sent from the Squeak - Dev mailing list archive at Nabble.com.

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Re: Dynabook hw cost
by Alan Kay 25 May '07

25 May '07

I hesitate to go into the issues for lack of time, etc. I used to say that "HW is just SW crystallized early". The first computers didn't have index registers but did direct address modification. Some of the real disasters in personal computers were done because the hackers didn't want to use address spaces or the CPUs couldn't support them, etc. Has no one noticed that graphics accelerators actually work? Etc. So HW choices make a huge difference. The real question is: what is a really good computation model for the VHLL, and what of it could be made into special HW? In my way of looking at objects and messages, they were supposed to be SW versions of how the ARPAnet and Internet were going to work: i.e. massive numbers, totally encapsulated, loosely coupled by pure messaging, and simultaneously active. Well designed hardware could make a huge difference on each of these compared to SW on a stupid CPU. One of the several reasons we don't have a really decent OOPL today is the lack of suitable HW to run it. The middle ground that was so successful at PARC which made up for the many things we didn't understand was the wonderful microcode architecture of the Alto and subsequent machines we designed and built. Today, FPGAs can fill some of this role. Butler Lampson has estimated that today's architectures are about 1000 times less efficient pound for pound than the Alto. That's 10 doublings which equals 15 years of Moore's Law -- meaning that what can be computed today by all the straining, etc., could have been possible 15 years ago, and what we could do today will perhaps not be possible for another 15 years. This means that Moore's Law on a bad design doesn't make up for a good design of custom HW. Just to pick one item -- suppose that instead of faking message passing with subroutine calls, the HW could enable real message passing. Or better yet, what if we could run a publish and subscribe with parameters matcher (like a modern version of LINDA) at the same speed as today's HW assisted subroutine calls? And what if these were between truly encapsulated objects that were the lowest level entity on the computer? Cheers, Alan At 10:02 AM 5/24/2007, Ralph Johnson wrote: >On 5/24/07, Alan Kay <alan.kay(a)squeakland.org> wrote: >>Hi Ralph -- >> >>I don't think either Ungar's architecture or the criticism of it >>below address the most important issues of making VHL object-oriented >>computer hardware (both then and now). > >I would be interested in knowing what issues you think are the most important. > >The thesis is Ungar's, but the architecture is not. I think the >architecture was a group project by Patterson's students. > >The point of the thesis is that a lot of proposed hardware features >don't help performance very much, and in fact there are software >solutions that are more effective. This is a good point. However, it >doesn't mean that no hardware features can help. Moreover, it assumes >that hardware is expensive and software is cheap, and in fact the >opposite is true. People have been working on a JIT compiler for >Squeak for some time, and we aren't using one yet. It is easy to say >"just put it in the compiler", but it might be too complex to ever get >the compiler working. > >What do you think are the main issues? > >-Ralph Johnson

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Monticello 2 - request for information
by Damien Cassou 25 May '07

25 May '07

Hi Avi and Colin, Google will pay me during this summer for a work on packages and Squeak. I would really like to work on Monticello 2. My aim is that in September, people will be able to start using it. But do to that, I need some cooperation from you. Can you please answer my questions? Where can I find documentation about what you have done? What are the most important hierarchies? What are their roles? What is the semantic behind the categories MC2-Squeak, MC2-SqueakPlatform? What is the status of MC2? What has been done and what needs to be done? Thank you very much -- Damien Cassou

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Tweak problem.
by rvclayton＠acm.org 25 May '07

25 May '07

I downloaded http://tweakproject.org/download/iBuild-3.8-6665.1.zip filed-in build/install.st to SystemVersion current version 'Squeak3.8' SystemVersion current higestUpdate 6665 and got the following error: MCHttpRepository(Object)>>doesNotUnderstand: #cachedFileNames MCConfiguration>>versionNamed:for:from: [] in MCConfiguration>>depsSatisfying:versionDo:displayingProgress: {[:dep | ver := dep versionInfo name. repo := repoMap at: ver ifAbs...]} [] in OrderedCollection(SequenceableCollection)>>do:displayingProgress: {[:each :i | bar value: i. aBlock value: each]} OrderedCollection(SequenceableCollection)>>withIndexDo: [] in OrderedCollection(SequenceableCollection)>>do:displayingProgress: {[:bar | self withIndexDo: [:each :i | bar value: i. aBlock value: e...]} [] in ProgressInitiationException>>defaultMorphicAction {[result := workBlock value: progress]} BlockContext>>ensure: ProgressInitiationException>>defaultMorphicAction ProgressInitiationException>>defaultAction UndefinedObject>>handleSignal: MethodContext(ContextPart)>>handleSignal: MethodContext(ContextPart)>>handleSignal: ProgressInitiationException(Exception)>>signal ProgressInitiationException>>display:at:from:to:during: ProgressInitiationException class>>display:at:from:to:during: ByteString(String)>>displayProgressAt:from:to:during: OrderedCollection(SequenceableCollection)>>do:displayingProgress: MCConfiguration>>depsSatisfying:versionDo:displayingProgress: MCConfiguration>>upgrade How do I recover from this?

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