Squeak-dev September 2007

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150 participants
157 discussions

ScaledDecimal can read in base 16 but cannot print in base 16
by nicolas cellier 25 Sep '07

25 Sep '07

This is at mantis http://bugs.squeak.org/view.php?id=6696 The intention of the ScaledDecimal class is to print a fixed number of digits in base 10 after the decimal point (as it obviously sounds for a latin, both ScaledDecimal and decimal point were originally intended for base 10). What would it mean in another base? Should it print with same number of digits, or with a number of digits leading to equivalent precision? Would a self shouldNotImplement be prefered? On the other hand, different radix are allowed on input as 16r14.0s1... So what? Pushing this logic, should the radix used to input the number be an instVar? (meaning this number keep n digits after the "decimal" point in base r) Nicolas

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XO for you
by Michael Haupt 24 Sep '07

24 Sep '07

Hi, apparently the OLPC initiative is going to sell XO laptops to people who donate the money for another: http://www.xogiving.org/ I like that. :-) Best, Michael

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[ANN] Magma 1.0r40
by Chris Muller 24 Sep '07

24 Sep '07

I am pleased to announce release 40 of the Magma object database for Squeak, offering a significant boost in robustness from the previous version: - No longer constrained by Squeaks 2GB file-addressability, Magma can now support unlimited file sizes (configured out of the box for up to 281 Terabyte sized files). - Full backups are now truly "live", with no pause in service. - There is now support for a "warm backup," for rapid failover capability.. - ..and server load distribution for clients that can tolerate a slightly-behind, read-only repository (i.e., for reporting, archive retrieval, etc.). - The MagmaCollectionIndex hierarchy is no longer required on the server. - The server correctly ignores garbage bytes sent by hackers to its listening port. - Other enhancements and some important bug fixes. Nearly every feature and fix has originated at the request of members of the Squeak community. This is your database. I plan to continue supporting, improving, and ensuring you have a good experience using Magma. Please tell me what you need on the Magma mailing list. This one single code-base has been installed and tested successfully in the 3.7, 3.8, 3.9, Tweak, Croquet 1.0SDK and sq3.9-7067dev07.07.1 images. Other images may work, I just haven't tested them, you can use the "Magma tester" to find out. In images without MethodProperties (3.7 and 3.8), Monticello will provide a friendly pink warning that a few extension methods will not load. This is ok, just press Proceed. It's better than maintaining different code bases for each version of Squeak. Since its earliest days, Magma has been a "one-click" install and this version is no different. There are three configurations available on SqueakMap and SqueakSource; "client", "server" and "tester". The former simply exclude certain packages that are not needed for that function. - Chris

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Dev image slowdowns
by Brian Brown 24 Sep '07

24 Sep '07

Hello list, I've been using Damien's dev images, and specifically the beta-web (sq3.10-7121web07.07.01, although it has been upgraded), and I've noticed that it has been getting slower over time. By "slower", I mean the responsiveness of the tools. I have to click multiple times to select items in OmniBrowser or in the Debug windows. My web application is still as speedy as ever, so it doesn't seem like a general slowdown. I'm not using Dynamic Protocols, because they were very slow, but after turning them off, the image was very responsive. I recall someone mentioning in passing a cache somewhere that could be cleaned out, but I can't remember enough to search successfully for the reference :) Any suggestions would be welcome! - Brian

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The Weekly Squeak Summary No. 14: Jul 1 - Sep 22, 2007
by Michael Haupt 24 Sep '07

24 Sep '07

Dear Squeakers, welcome to the The Weekly Squeak Summary, an irregular traffic-dependent report on what's going on in the world of Squeak based on the Weekly Squeak blog. Highlights of the past weeks: Squeak's documentation base has seen two significant improvements. There now is a detailed tutorial [1] focused on the development of a little game. The tutorial covers many aspects from Squeak installation over unit testing to version management with Monticello. The second important improvement is the book "Squeak by Example" [15] that covers the entire Squeak system. The book is available for free as a PDF download, but can also be purchased in print for very little money. Who says Squeak isn't usable in production? Qwaq and Intel are collaborating [18]! The OLPC initiative's XO laptops are going into production [4], and there finally was some credible and balanced coverage of the project in German television [9]. More smashing news is upcoming but not yet ready for being posted in the Weekly Squeak Summary... ;-) The past weeks' news items: [1] A Squeak 3.9 development tutorial http://news.squeak.org/2007/07/15/a-squeak-39-development-tutorial/ [2] New Seaside website http://news.squeak.org/2007/07/15/new-seaside-website/ [3] More eye-candy coming soon to your Squeak desktop http://news.squeak.org/2007/07/15/more-eye-candy-coming-soon-to-your-squeak… [4] OLPC - The $100 Laptop - Goes into Production http://news.squeak.org/2007/07/23/olpc-the-100-laptop-goes-into-production/ [5] Dynamic Language Symposium http://news.squeak.org/2007/08/07/dynamic-language-symposium/ [6] Yabba Dabble Do! http://news.squeak.org/2007/08/08/yabba-dabble-do/ [7] Coder clears head… has fun… http://news.squeak.org/2007/08/09/coder-clears-head-has-fun/ [8] Thinking Objects http://news.squeak.org/2007/08/12/thinking-objects/ [9] OLPC on TV http://news.squeak.org/2007/08/20/olpc-on-tv/ [10] New Squeak UI Enhancements Released http://news.squeak.org/2007/08/30/new-squeak-ui-enhancements-released/ [11] Coming Soon - Open Source Squeak Book! http://news.squeak.org/2007/09/03/coming-soon-open-source-squeak-book/ [12] New Squeak UI Enhancements Released http://news.squeak.org/2007/08/30/new-squeak-ui-enhancements-released/ [13] To Pipe Or Not To Pipe http://news.squeak.org/2007/09/05/to-pipe-or-not-to-pipe/ [14] Squeak at ESUG http://news.squeak.org/2007/09/12/squeak-at-esug/ [15] Squeak By Example now published! http://news.squeak.org/2007/09/14/squeak-by-example-now-published/ [16] New Seaside Paper http://news.squeak.org/2007/09/18/249/ [17] Squeak running on FIC Neo1973 Open Source Phone http://news.squeak.org/2007/09/20/squeak-running-on-fic-neo1973-open-source… [18] Qwaq, Intel Collaborate on Enhanced Virtual Workspace Product http://news.squeak.org/2007/09/21/qwaq-intel-collaborate-on-enhanced-virtua… You can find this and much more on The Weekly Squeak blog, the newsblog dedicated to the world of Squeak:http://news.squeak.org/ Subscribe to the Weekly Squeak RSS feed: http://news.squeak.org/feed/ Happy squeaking, Michael

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[ANN] Another namespaces approach.
by Michael van der Gulik 24 Sep '07

24 Sep '07

Hi all. Now by this stage you're probably all thoroughly sick of namespaces. I've put together a more complex namespaces architecture. It's now available on the PackageUniverses for 3.10. Note that this release is still very buggy and for curious developers only. To install: Go to Tools/NamespaceBrowser and install that. Then browse to PasteUpMorph>>isSafeToServe, modify and save the source there. (I noticed this bug just now). Then evaluate: "NamespaceExamples openPackageManager." This converts existing code in the image and eventually pops up a PackageManager with four packages: Kernel, Collections, Morphic and Legacy (which contains the SystemDictionary). Right-click on these and click "Browse" and play around some. Then close Squeak, chuck the image away and wait for the next announcement :-). Currently there's a NamespaceBrowser, NamespaceWorkspace, and a package management tool where all the action starts from. Some documentation for my approach is at http://gulik.pbwiki.com/Namespaces. Some advantages of this approach: - It doesn't need the SystemDictionary, but will work happily alongside it. It makes a couple of changes to the compiler etc, but these should not affect the workings of the rest of Squeak. Classes in namespaces are not stored in the SystemDictionary but are stored in packages (which again aren't stored in the SystemDictionary either). - You can load two (or more) versions of the same package into the same image at the same time and make objects from either. Loading a package does not modify any other classes currently in the image. - Packages depends on other packages by UUID, and if you modify a package it gets a new UUID. This means that your code will never suffer from dependency problems and will always run in exactly the same environment you wrote and tested it in. Bit-rot shouldn't happen unless you start changing the VM. - You don't need to use haltOnce: any more. The system can run the code in a read-only package (not yet supported...) and you can do your work on a working copy of that package. - Naming collisions are impossible (or at least they should be... not yet tested). - It doesn't need to be integrated into the official image because it can be loaded as a Monticello package. I plan to work out a way to make .mcz or .st files that use namespaces automatically load namespace support into the image. - It's probably compatible with Göran's approach :-). You can have two namespace implementations in your image at the same time... if you really want to. Gulik. -- http://people.squeakfoundation.org/person/mikevdg http://gulik.pbwiki.com/

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Changes file limit (was: Re: [ANN] Magma 1.0r40)
by Chris Muller 23 Sep '07

23 Sep '07

I think the changes file is limited by a different constraint internal to the image. On 9/22/07, Matthew Fulmer <tapplek(a)gmail.com> wrote: > On Sat, Sep 22, 2007 at 04:08:39PM -0700, Andreas Raab wrote: > > What "2GB file-addressability" limit are you referring to? There is no > > such thing. Files have been 64 bit for a couple of years now so unless > > you run some really, really old VMs that limit doesn't exists. > > So, does that mean that the .changes file collapse in 3.9 was > unnecessary? I thought this limit was the cause of the > compresssed sources in 3.9. > > -- > Matthew Fulmer -- http://mtfulmer.wordpress.com/ > Help improve Squeak Documentation: http://wiki.squeak.org/squeak/808 > >

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Squeak UI hangs, Seaside still works, what can I do? 3.10 VM
by Matthias Berth 23 Sep '07

23 Sep '07

Hello, I have done some innocent looking Do-it in Squeak, then the UI became unresponsive. I have close to 0% CPU. When I move another window over the fullscreen squeak window I can see some CPU load. Alt-. does not work. My seaside session still works fine. So I switched on the halos, and did some print-its in the web interface like Smalltalk garbageCollect. Then I was able to open a browser using Integer browse. It seemed to take a long time before the window opened. Then I tried SmalltalkImage current saveAsNewVersion and that did not finish for the last 20 minutes. It created the new version of the changes file, but the image file is not there. My configuration: - Squeak VM 3.10 http://www.squeakvm.org/win32/release/SqueakVM-Win32-3.10.6-bin.zip - image based on the squeak-dev image sq3.9-7067dev07.09.1.image - running seaside, Pier - freetype plugin - windows XP I am using the most recent 3.10 VM, so I could use Freetype from the package universe (as discussed a few days ago here). How can I try to get a responsive UI again? Cheers Matthias

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[ANN][Squeak-dev Mini Image] Version sqMinidev07.09.1
by Damien Cassou 23 Sep '07

23 Sep '07

Hi, thanks to Pavel, I finally managed to create a squeak-dev image based on his MinimalMorphic. This image can be found at http://damien.cassou.free.fr/squeak-dev/beta/experimental. Please try it. -- Damien Cassou

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Bug in 3.10 package universe
by Simon Guest 23 Sep '07

23 Sep '07

When I try to install CommandShell, it fails with an EOCD error on the file CommandShellV3-0-3-dtl.sar it is trying to unzip. The reason is, the contents of this file is just HTML which is saying the Squeak SWiki has moved. Who can fix this? cheers, Simon

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