Squeak-dev November 2007

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142 participants
155 discussions

3.10 traits inconsistencies
by Andreas Raab 19 Nov '07

19 Nov '07

Hi - I noticed some traits inconsistencies in the latest 3.10 beta. If someone could shed a light on those, I'd appreciate it: * Class definitions with traits: Class>>subclass: t uses: aTraitCompositionOrArray instanceVariableNames: f classVariableNames: d poolDictionaries: s category: cat says this: copyOfOldClass := self copy. newClass := self subclass: t instanceVariableNames: f classVariableNames: d poolDictionaries: s category: cat. "..." SystemChangeNotifier uniqueInstance classDefinitionChangedFrom: copyOfOldClass to: newClass. This seems wrong because unless I'm missing something the "copyOfOldClass" is the superclass of the class being changed and not its old representation. This pattern seems to appear in all traits subclass creation methods. * Class traits: fooTrait := Trait named: #TFooTrait uses:{} category: 'Tests'. barTrait := Trait named: #TBarTrait uses:{} category: 'Tests'. classA := Object subclass: #TestClassA uses: fooTrait instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Tests'. classA classTrait uses: fooTrait class + barTrait. "works" classB := Object subclass: #TestClassB uses: fooTrait + barTrait instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Tests'. classA classTrait uses: fooTrait class + barTrait. "fails" Why is this? In particular considering that we can transform classA into the desired shape via: classA := Object subclass: #TestClassA uses: fooTrait instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Tests'. classA classTrait uses: fooTrait class + barTrait. "works" classA := Object subclass: #TestClassA uses: fooTrait + barTrait instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Tests'. (note that in the above the obvious desire is to include the methods of TFooTrait for both class and metaclass operations). Given that the former doesn't work, I think this last example constitutes a bug. But more importantly: What the rationale for disallowing the inclusion of the same trait on both instance and class side? * Fileouts: I was trying to file out a bunch of code with traits and found that I can't file it in again. I've tried with other code and, for example, Nile can't be filed out and back in either (if you need something to try it with). Monticello seems to work but at times this is a bit of a heavy-weight solution. Any ideas? Oh, and lastly: Is there any documentation at all about the the implementation of the traits kernel? (not the general approach; I'm pretty clear on that but rather on the implementation itself) I seem to remember having seen references to a thesis maybe but I can't remember. Any pointers welcome. Cheers, - Andreas

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OLPC mass production started
by Bert Freudenberg 19 Nov '07

19 Nov '07

Picture of the first "XO-1" children's laptop coming down Quanta's production line: http://wiki.laptop.org/go/Image:StartOfMP.jpg And every single machine comes with Squeak/Etoys pre-installed - a big thanks to everyone involved directly and indirectly! - Bert -

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Lively Kernel BOF movie up!
by Göran Krampe 19 Nov '07

19 Nov '07

Hi folks! Ok, last movie is up - the 44 minute BOF about the Lively Kernel that Dan held. Grab it here: http://goran.krampe.se/livelybof.avi.torrent Also, Dan may host it on a Sun server soon, but he can post about that when he gets it set up. regards, Göran PS. Sorry about the slow start on this one, it is only seeded from an old Ultra5 sitting in my attic on a lowly ADSL line. ;)

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C# Garbage Collection Failure
by Jon Hylands 19 Nov '07

19 Nov '07

Thought this was interesting... I guess they should have used something with a more mature garbage collector... http://robots.net/article/2400.html Later, Jon -------------------------------------------------------------- Jon Hylands Jon(a)huv.com http://www.huv.com/jon Project: Micro Raptor (Small Biped Velociraptor Robot) http://www.huv.com/blog

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Re: Looking for the DHBSqueakNumerical-1.sar package
by cbeler＠enit.fr 18 Nov '07

18 Nov '07

Hi I remember I did a basic reorganizing to have that package in a monticello one (not deeply tested and that was my first try - there are some Unit Tests that pass though I'm not sure I did all the job very well). You'll find the package here: http://cdrick.free.fr/DHB-CB.2.mcz Hope it can be useful to you... Cédrick > The existence of test cases is interesting, but I have already received a couple of packages offline. Seeing as I don't have GNU Smalltalk loaded, this is just easier. I would welcome a test case package if you could extract it and send it to me, though. > > thanks all! > Rob > > ----- Original Message ----- From: "Paolo Bonzini" <bonzini(a)gnu.org> > To: <squeak-dev(a)lists.squeakfoundation.org> > Sent: Saturday, November 17, 2007 3:51 AM > Subject: Re: Looking for the DHBSqueakNumerical-1.sar package > > > >

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Looking for the DHBSqueakNumerical-1.sar package
by Rob Withers 17 Nov '07

17 Nov '07

It is in SqueakMap but the link for the code is stale. Does anyone have this package or know where it now resides? thanks, Rob

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64 bit Squeak for MacOSXdot5 Leopard?
by Peter William Lount 17 Nov '07

17 Nov '07

Hi, Has anyone created a 64 bit Squeak VM and image for Intel MacOSXdot5 Leopard? If so where is it? I couldn't find it at http://squeakvm.org/squeak64. Thanks, Peter

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FUN Squeak on ftp.squeak.org
by karl 17 Nov '07

17 Nov '07

I'm happy to announce FunSqueak for download: http://ftp.squeak.org/various_images/FunSqueak/3ShortTangos.zip Here is the description from Edgar: Edgar J. De Cleene wrote: > 3ShortTangos folder contains > Amablemente.mp3 > Bajo Belgrano.mp3 > Destellos.mp3 > FUNSqueak3.10.1beta.7155.changes > FUNSqueak3.10.1beta.7155.image > > And is packed this way for quick start of SqueakAmp, when user choose his > own music, takes some tiiiiiimeeeeee. > > Into the FunSqueak, you find > Shout > Fabrik > MorphicWrappers > MathMorphs > SendTreeExplorer > Tracing Messages Browser > DebugReport > Network-IRC > Scheduler > ToothPick > Rompecabezas > MoviesFor3dot10 > SqueakAmp > LogicCircus > Connectors > Keymapping > BabySRE > > And some of Jerome, without his knowledge Karl

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Float
by Frederic Pluquet 16 Nov '07

16 Nov '07

Hello, I found a bug in Squeak (3.0, #7067)... The following code returns true: (#(0.3 0.5 0.2) inject: 0.0 into: [:sum :proportion | sum + proportion]) = 1.0 But this following code returns false ! (#(0.3 0.6 0.1) inject: 0.0 into: [:sum :proportion | sum + proportion]) = 1.0 An idea ? Fréd -- Frédéric Pluquet Université Libre de Bruxelles (ULB) Assistant

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Re: ANSI Smalltalk
by Todd Blanchard 16 Nov '07

16 Nov '07

I don't see why not. Brazilians are Americans, right? ;-) On Nov 14, 2007, at 7:16 AM, Jecel Assumpcao Jr wrote: > Note that ANSI = AMERICAN National Standards Institute > > Does it make sense for non US people to participate? > > -- Jecel (from Brazil) >

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