Squeak-dev July 2004

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Squeak Wiki
by Markus Fritsche 05 Jul '04

05 Jul '04

Hi! The Qotd is locked and full of spam. Kind regards, Markus

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Any value in DecentReviewerNotePad ChangeSets and Attachments work slightly differently
by Thomas Koenig 04 Jul '04

04 Jul '04

We have the problem with attachment names > 35 characters not folding properly. I put in an edit to prevent this for changesets and am trying to do the same thing for attachements. I've noticed that in DecentReviewerNotePad, adding ChangeSets and Attachments work slightly differently. Specifically: -Typing in an attachment file name and saving gets a MNU, while in changeSets, typing in a cs name works fine. -Clicking the attachments add button, opens up a window to drag from while clicking the add button in cs opens a window to key into. (In both cases, clicking the drag button opens a window to drag from.) -In attachment the full file names are listed w/o commas and in attachments they are not (and the corresponding methods are attachmentsText vs changeSetsDisplayText.) Can you see any good reasons for the differences? If not, I will eliminate some duplicate code and inconsistent UI so as to make my changes and testing easier to implement. I will make attachements work like change sets Tom

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Final do-its/cleanups before going gamma/final
by Doug Way 04 Jul '04

04 Jul '04

Hey, does anyone have a good list (or just a suggestion or two) of do-its/cleanups which should be done before I create the 3.7gamma candidate image? I'm already doing these: - check Undeclared ("Undeclared removeUnreferencedKeys; inspect") - regenerate flaps ("Language recreateFlaps") - ... - (edit Welcome Window text and ReadMe.txt file, of course) - delete all numbered update-changesets - probably a garbage collect at the end of these Also, I have a do-it around somewhere from 3.6 which should regenerate the existing SystemWindows ("A Word of Caution" etc) so we get cleaned-up window frames. Anything else I should check? (Embarassingly, I think I asked this same question around the time of 3.6gamma, and I'm pretty sure either Tim or Michael R responded with some other useful checks, but I can't seem to find that email while searching right now...) - Doug

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a wrinkle in on-demand behavior transfer
by Craig Latta 04 Jul '04

04 Jul '04

Hi-- So I've been using on-demand behavior transfer to pull into a minimal snapshot just what's required to run a particular application from a kitchen-sink snapshot (with a bunch of prerequisites from various authors). I ran into a situation that made me realize that my approach wasn't accurate enough. What I had been doing was responding to each message not understood by installing a "loader" method [(RemoteMessageDispatcher class)>>loadAndResend and friends]. When run, the loader method fetches the appropriate method from the kitchen-sink system (using a special network client), then resends the message which originally wasn't understood. The whole process gets kicked off by a loader method that represents an entry point for the application in the kitchen-sink system. I got pretty far doing this. New classes were installed and initialized properly, as a side-effect of transferring method literals. Super-sends and underrides were handled properly, and transfer loops were avoided. But I hadn't considered that the possibility of needing an override before the need for it is detected. In this case, one of the application classes had an implementation of >>name in the kitchen-sink system, and an application object in the minimal system sent that message. The receiver happily ran Object>>name instead of the override; the minimal system had no way of knowing that it should have installed the overriding method first. This problem seems unsolvable in general (at least, without perfect type inference, which I am not interested in pursuing). Left unchecked, it could yield highly subtle errors, and so renders any session untrustable. So, I've changed my approach to an even more brute-force one. I'm running the kitchen-sink snapshot in the simulator, and reporting every simulated send, after the entry point, to another copy of the kitchen-sink snapshot which is running normally. That snapshot, in turn, will make sure that the involved method is installed in the minimal snapshot. I appreciate any suggestions or comments. Well, apart from "this is all nuts"; I've already thought of that one. :) thanks, -C -- Craig Latta improvisational musical informaticist craig(a)netjam.org www.netjam.org [|] Proceed for Truth!

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re: a wrinkle in on-demand behavior transfer
by Craig Latta 04 Jul '04

04 Jul '04

Russell Penney writes: > At the point where you get the "shape" of the remote class use Ned's > idea and get the catalog then. Hey, yeah. :) Thanks all! -C -- Craig Latta improvisational musical informaticist craig(a)netjam.org www.netjam.org [|] Proceed for Truth!

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Harvesting Party Thursday July 8th 01:00 GMT
by Ken Causey 04 Jul '04

04 Jul '04

Just a reminder that the next Harvesting Party will take place between 01:00 (1 AM) and 05:00 (5 AM) GMT Thursday July 8th, 2004. As usual we will meet in #squeak on irc.freenode.net. More information about the #squeak IRC channel can be found at http://people.squeakfoundation.org/article/7.html Information about the Harvesting Party idea can be found at http://people.squeakfoundation.org/article/29.html If you have the time please attend and work toward the future of Squeak. The next seven parties are scheduled for 05:00 (05:00 AM) GMT Monday July 12, 2004 09:00 (09:00 AM) GMT Friday July 16, 2004 13:00 (01:00 PM) GMT Tuesday July 20, 2004 17:00 (05:00 PM) GMT Saturday July 24, 2004 21:00 (09:00 PM) GMT Wednesday July 28, 2004 01:00 (01:00 AM) GMT Monday August 02, 2004 05:00 (05:00 AM) GMT Friday August 06, 2004

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I want to run the interperter within squeak 3.6 or 3.7
by stéphane ducasse 04 Jul '04

04 Jul '04

Hi for the presentation I will do at RMLL I want to show that you can execute the VM inside itself. Nathanael told me that this was not working in 3.7. So I'm working with 3.6. I loaded VMMaker 3.7b5 I prepared a 3.6 image in MVC Then I executed (InterpreterSimulator new openOn: '/Volumes/Data/Users/ducasse/Workspace/FirstCircle/SqDemoes/Squeak3.6 -5424-basic/Squeak3.6-5424-basic-mvc.image') test But I get an error. I do not know where to find a version of VMMkaer for 3.6. I looked ont he site of tim but without success. Stef

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doit shortcut key on PC
by stéphane ducasse 03 Jul '04

03 Jul '04

Hi I need to know what is the shortcut key on PC to execute an expression (command-d on mac). But I only have mac around :) Thanks Stef

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[FIX] uparrowcentered
by stéphane ducasse 03 Jul '04

03 Jul '04

--==CelesteAttachment34609== from preamble: "Change Set: uparrowcentered Date: 3 July 2004 Author: stephane ducasse fix the glitch in diego scrollbar up arrow and left arrow. I needed that for the screenshots of my book. The arrow was always too much on the left. This fix is not really good since it fixes the consequence and not the cause. May be the cache is not filled with the right information. Normally the centered method of the class should be correct and this would indicate that the bug is more in the data cached."! --==CelesteAttachment34609== Content-type: application/octet-stream Content-transfer-encoding: base64 Content-disposition: attachment;filename="uparrowcentered.cs.gz" H4sIAAAAAAAAAIVTTU/bQBA9+7D/YRIOLqpk8gFF5EahSFRqewhSD4hKa+/YXrHedfdDJv31 nVmHFqmH5pDY8/HmzXuT8s67AfY/E8rnbXVZY5TgWijLNVyPXhvYrFbnZQmPRkYMEdKo6GEH JxdXH7ZP4Cxs4XMyh1wHMsJ6tbvY7FZrGIdyIZY3vbQdwh7jrijSKL13U4M2okclbhmqKIo3 EOI6xd55joaII3UjqNTIEFCIVr9A7BE6o2PTg7agNHYOQuOdMbX0RA/yCJBWgcE2zq8V3INF VKion0i2zmcgakS0oXcx8NbDAWrnnishHig5A00ygDSTPASIzsGQaDBtzd2MX1GpDsDM6Me6 CB6loWU65xQEbRsEHTmPITc1zgYkuTnBJLklx2UKWIH4IokEHkMNfR9hW20M0Z907HPS666P JAGtMsiona3gKz/y7Nx8FBkGJEEVr5fDhqQE2jgZxXMa5z02MVOJvMmUM9oq3ZA7s1zcWKeO qQzOIwvPIboEOZNU1XIhhFjssxEfyYh5argjK6HUVkctjf6FJYQoh5FiQcHl2fYsn81mszu/ omtJ4/0gOxTFUtowoQfJTg0kPFMlfdTraPK5TjE6u6TixqD0ee3/OWHfKqR5Ftf+uceCMNkt OY6EGP4uP1do271CT84/8+uExhAFUfyAgKad5RVFkW/nW3urWVwyZwfvapesCgTwXStakT66 ffCJ/kuPJ3xJT8fYnTQhB6Mbn04pGEg36s/489KfXiIRghcYNCH/mzicwntYU2vjDBuQK2Kf hvqGAwsgs34DNH+iffkDAAA= --==CelesteAttachment34609==--

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Finding object references
by Nevin Pratt 03 Jul '04

03 Jul '04

With VisualWorks, I can find references to any object via: self allOwnersWeakly: true This helps tremendously in tracking down why objects don't get garbage collected. How do you find object references in Squeak? Nevin

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