Squeak-dev November 2007

squeak-dev@lists.squeakfoundation.org

142 participants
155 discussions

Problem with different screen resolutions
by Alejandro Gonzalez 29 Nov '07

29 Nov '07

I created a project in which I dropped some morphs that now I cannot see because I'm opening the image in a machine with a screen resolution that is smaller than the one in which I created the project. Is there something like a "bird's eye view", "zoom out" or something that I can use to see parts of the world that are out of my window? or the only chance I have is to change the screen resolution of the machine? Thanks Alejandro

2 1

New Yaxo (XML parser) version
by Michael Rueger 29 Nov '07

29 Nov '07

Hi all, I've just put a new version of Yaxo up on SqueakSource. It includes the latest fixes and adds a parent pointer to elements in order to support Pastell (XPath). http://www.squeaksource.com/XMLSupport/XML-Parser-mir.13.mcz As noted before, this new version needs 3.8.2 (alpha), 3.10 or at least the character set and string related fixes from the 3.8.2 update stream to work. Michael

1 0

[Repost] 3.10 traits inconsistencies
by Andreas Raab 29 Nov '07

29 Nov '07

Hi - [Repost from a while ago. I'm still interested in finding out more about these issues - who maintains traits these days?] 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

3 3

Loading a powerpoint presentation into squeak
by Maximiliano Taborda 29 Nov '07

29 Nov '07

Hello. I know there is a way to upload a powerpoint presentation into squeak but I don't find the way. Could someone let me know how to do it? Thanks. Maximiliano

3 3

ImageSegment problem (WAS: Image recovery?)
by Esteban Lorenzano 28 Nov '07

28 Nov '07

Hello, allI'm trying to run a script that backups my objects using ImageSegments, using this code: | aFile | aFile := FileStream newFileNamed: 'backup.obj'. aFile fileOutClass: nil andObject: WBUser all. When I test the script (in another image, not the broken one), and I'm getting the following error: "This context was not include in the ImageSegment". It seems to be in ContextPart#storeDataOn:, because of this line: aDataStream insideASegment ifTrue: [^ super storeDataOn: aDataStream]. which is returning false at #insideASegment... I'm already tried other code, like: | aSegment aStream | aStream := FileDirectory default newFileNamed: 'backup.dat'. aSegment := ImageSegment new. aSegment copyFromRoots: (WBUser all asArray) sizeHint: 100000 areUnique: true. aSegment writeForExportOn: aStream. And I'm getting the same error... ¿Does anybody knows what I'm doing wrong? Thanks, Esteban On Nov 28, 2007 6:52 PM, Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > Hi Gulik,No, it was not a morphic application, but seaside 2.8. And yes, I > have REPLServer installed and running but it was useless :( > > Thanks, > Esteban > > > On Nov 28, 2007 4:56 PM, Michael van der Gulik <mikevdg(a)gmail.com> wrote: > > > > > > > On Nov 28, 2007 9:56 AM, Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > > > > > Hi all,I have an image that is not working anymore, and I can not take > > > control from that (the image starts, but i can't press any key, not even > > > cmd+.) > > > Is there a way to load the image (as an ImageSegment or something like > > > that) so I can recover the objects I need? > > > > > > > Do you mind if I ask what happened so that the image broke? Was it a > > custom morph? > > > > Under some circumstances, it is possible to recover a broken image if > > you have prepared for the case of failure. I use REPLServer, which is a > > telnet server that executes Smalltalk commands in the image, to enter these > > image via a "back door" and then recover the image manually. One helpful > > command in REPLServer is: > > > > : utils rebootMorphic. > > > > Which starts you on a completely fresh, newly created Morphic project > > and usually gets things going again. You can also suspend all (non-vital) > > processes and restart only the core Morphic process to work out what went > > wrong. > > > > REPLServer is available via the PackageUniverse in 3.10. Send all bug > > reports to me :-). > > > > Gulik. > > > > -- > > http://people.squeakfoundation.org/person/mikevdg > > http://gulik.pbwiki.com/ > > > > > > > > > -- > "Querer es suscitar las paradojas" > Camus. El míto de Sísifo. > -- "Querer es suscitar las paradojas" Camus. El míto de Sísifo.

1 0

[Repost] 3.10 traits inconsistencies
by Ken G. Brown 28 Nov '07

28 Nov '07

Perhaps these links may be of interest? <http://www.iam.unibe.ch/~scg/Archive/Papers/> <http://www.iam.unibe.ch/~schaerli/smalltalk/traits/traitsPrototype.htm> <http://scgwiki.iam.unibe.ch:8080/SCG/544> <http://www.iam.unibe.ch/~schaerli/smalltalk/traits/traitsPrototype.htm> <http://www.iam.unibe.ch/~scg/Archive/Papers/Scha03aTraits.pdf> <http://www.iam.unibe.ch/~scg/cgi-bin/scgbib.cgi?query=nathanael+applying+tr…> <http://www.iam.unibe.ch/~scg/Research/Traits/> <http://homepage.mac.com/morriss/iblog/C1306450651/E677497791/index.html> Ken G. Brown >Date: Tue, 27 Nov 2007 22:17:55 -0800 >From: Andreas Raab <andreas.raab(a)gmx.de> >Subject: [Repost] 3.10 traits inconsistencies >To: The general-purpose Squeak developers list > <squeak-dev(a)lists.squeakfoundation.org> >Message-ID: <474D0813.7060402(a)gmx.de> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >Hi - > >[Repost from a while ago. I'm still interested in finding out more about >these issues - who maintains traits these days?] > ><snip> >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

1 0

Squeak's Planets down
by Giuseppe Luigi Punzi 28 Nov '07

28 Nov '07

Simon, Squeak's planets are down. -- Giuseppe Luigi Punzi <glpunzi(a)lordzealon.com>

2 2

Recategorisation broken on Squeak-dev 7154
by Damien Pollet 28 Nov '07

28 Nov '07

Hi, Seems drag-n-dropping methods to protocols doesn't work in Damien's latest image + lastes universes updates. I have the "browse with dnd" preference checked. I used the "reorganize categories" item but it's not as practical :) What is the best place to report this? There should be instructions for bug-reporting in the "Welcome" notes of the dev image… -- Damien Pollet type less, do more [ | ] http://typo.cdlm.fasmz.org

2 1

Image recovery?
by Jerome Peace 28 Nov '07

28 Nov '07

Image recovery? HI Esteban, I don't know how deep your problem is. What has worked for me is: Open the changes file in a text editor. Search down to the start of my personal changes. Copy the remaining portion of the file into another file. Then I hunt thru this changes fragment for the most recent version of my desired-to-save work. Then I restart with a fresh or known checkpoint image and reapply the desired-to-save changes. It is a little messy to do it this way but it also usually inspires thought and I make progress on my design during the recoveries. I then get more virtuous about saving checkpoints before running risky code. Hth. Yours in service and curiosity, --Jerome Peace *** >Esteban Lorenzano estebanlm at gmail.com >Tue Nov 27 20:56:16 UTC 2007 > >Hi all,I have an image that is not working anymore, and I can not take >control from that (the image starts, but i can't press any key, not even >cmd+.) >Is there a way to load the image (as an ImageSegment or something like that) >so I can recover the objects I need? > >Thanks in advance, >Esteban >-- >"Querer es suscitar las paradojas" >Camus. El míto de Sísifo. *** ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs

2 1

BlockClosure in SmartRefStream
by Thushar G R 28 Nov '07

28 Nov '07

Hi, Does any one ever tried to file out a BlockClosure object using SmartRefStream..? thanks in advance thushar -- thuchu

2 2

Jump to page: