Squeak-dev March 2006

squeak-dev@lists.squeakfoundation.org

177 participants
255 discussions

[ANN] eCompletion 3.0b1
by Ruben Bakker 20 Apr '06

20 Apr '06

On SqueakMap you'll find a new release of eCompletion. There are a bunch of new features to be tried and tested: - Integration with RoelTyper (created by Roel Wuyts) for better instance variable type determination. - New detail pane for current menu entry - Open a (class, implementers) browser on a menu entry - menu paging (PageUp, PageDown, Home, End) - Character completion for quotes, brackets etc. - Uses same colors as Shout - Help 3.0b1 is beta, so I didn't publish it. In "Squeakmap Package Loader" you need to open the eCompletion entry and install the version 3.0b1 by right clicking and choosing "install" on it. eCompletion got a new home: http://uncomplex.net/ecompletion. You'll find more documentation there. Please don't hesitate to send me bug reports, suggestions and feedback! Ruben

9 17

About the #logChange error in SqueakMap
by Germán Arduino 05 Apr '06

05 Apr '06

Hi: About the problem http://bugs.impara.de/view.php?id=2912, that I've documented a workaround at http://bugs.impara.de/view.php?id=3283 I want to ask how many time may take to be fixed. Sorry If I don't know deeper the fix related process, but this case is really widely spread (arise in any opprtunity when a user want to update SqueakMap) and really easy to solve (only patching the method not using the deprecated one). Can I help? Only say me how/were. Best Regards. gsa.

14 43

Henrik antialising
by stéphane ducasse 03 Apr '06

03 Apr '06

Hi guys did one of you hear about andy tween the cool father of SHOUT. Way back he said that he was willing to harvest Henrik antialiasing font rendering. I tried to contact him but got no reply (may be a spam filter problem). Stef

12 43

[BUG] 0003400: Load Latest Code Updates Gives Walkback
by John Pierce 03 Apr '06

03 Apr '06

Hi all, I logged a bug in Mantis about loading latest code updates. I have an image built upon a fresh 7020 3.9 image and I cannot seem to "load code updates" to get the 3071 patch. Details are at http://bugs.impara.de/view.php?id=3400. It might just be me or my image, but I'm not sure why I get the walkback about SMBase-gk.63 not found. Any ideas or do I have to keep building new images from the latest and greatest to get fixes? John -- It's easy to have a complicated idea. It's very very hard to have a simple idea. -- Carver Mead

4 9

[ANN] SUnitExtensions
by Hernan Wilkinson 02 Apr '06

02 Apr '06

Hi, we created a project in SqueakSource called SUnitExtensions with extensions we added to SUnit. This package is needed to run the test of Aconcagua (see next mail!) The extensions are: * TestCase>>should: aBlock raise: anException withExceptionDo: anotherBlock * TestCase>>should: aBlock notTakeMoreThanMilliseconds: anInteger * TestCase>>fail This are very useful methods... it would be nice to have them in the SUnit package... Right now we created this package to be able to run the Aconcagua tests. If they are added to the SUnit package, we can delete it. See http://www.squeaksource.com/SUnitExtensions.html Bye, Hernan. -- ______________________________ Lic. Hernán A. Wilkinson Gerente de Desarrollo y Tecnología Mercap S.R.L. Tacuari 202 - 7mo Piso - Tel: 54-11-4878-1118 Buenos Aires - Argentina http://www.mercapsoftware.com --------------------------------------------------------------------- Este mensaje es confidencial. Puede contener informacion amparada por el secreto profesional. Si usted ha recibido este e-mail por error, por favor comuniquenoslo inmediatamente via e-mail y tenga la amabilidad de eliminarlo de su sistema; no debera copiar el mensaje ni divulgar su contenido a ninguna persona. Muchas gracias. This message is confidential. It may also contain information that is privileged or otherwise legally exempt from disclosure. If you have received it by mistake please let us know by e-mail immediately and delete it from your system; you should also not copy the message nor disclose its contents to anyone. Thanks. ---------------------------------------------------------------------

5 5

Re: Fraction equality and Float infinity problem
by ncellier＠ifrance.com 02 Apr '06

02 Apr '06

Well, the problem is not only for infinity (Overflow). It is also true for underflow. (2/(11 raisedTo: 400)) = 0.0. "is true" (2/(11 raisedTo: 400)) = 0. "is false" And in fact, the equality transitivity problem can show up for any fraction not exactly representable in IEEE Floating point, that is most Fractions. Since Fraction set is dense in set of real numbers, i can find an infinite number of Fractions lying between two Float. Since IEEE floating point arithmetic only have a finite number of possible values, then for each floating point value, there exist an infinite number of fractions that will be equal to this float (in current implementation, not mathematically), but the fraction will not equal to each other, thanks to exact arithmetic. Example: | a b | a := (16rFFFFFFFFFFFFF11 / 16r1000000000000000). b := (16rFFFFFFFFFFFFF10 / 16r1000000000000000). c := a asFloat. {a = b. a = c. b = c.}. "is {false . true . true}" Knowing this, i'am not sure that ((1/3) asFloat = (1/3)) should answer true. Maybe that should be only the case for exact representation like 1/2 1/4 3/4 etc... But in this case, we also have to redefine coercion to coercing to Fraction instead of Float, because Fraction are more general (yes, Float is a subset of Fraction). If we do not coerce to exact arithmetic, we will have ((1/3) asFloat - (1/3)) isZero, and still we might be caught by some form of equality problem... Thus are we ready to exchange our fast floating point algorithm for slower Fraction, with a huge number of useless digits, each time somebody introduce a Fraction. Are we really sure we vote for this perfect system ? I am not sure at all. And that is also the case between floating points and integers. Sure other dialects also have the equality problem, maybe not for Infinity, but for less trivial inexact arithmetic case. All is coming from problem of these languages calling floating point numbers real. Real is more general than fraction, ah yes, we have been foolished by this one. What should we do ? What is your opinion ? ________________________________________________________________________ iFRANCE, exprimez-vous ! http://web.ifrance.com

7 8

[ANN] Self-bootstrapping environment for Squeak 3.9a
by Pavel Krivanek 02 Apr '06

02 Apr '06

Hi all, I've created the first tolerably usable version of self-bootstrapping environment for Squeak 3.9a that can produce kernel image. It's delivered from http://lists.squeakfoundation.org/pipermail/squeak-dev/2005-October/096029.… but it's prepared completely from scratch. You can find it here: http://www.comtalk.net/Squeak/uploads/20/kernel.tar.bz2 You need the fresh image 3.9a-6719. Then evaluate Smalltalk condenseChanges This step is necessary because of limitation of maximal changes file size. Condensing of changes files doesn't work well because it corrupts the methods that contains WideStrings. So you have to load file UTF8Patch.1.cs. This image detaches GUI and model of changes so it contains new class named ChangesOrganizer. It has to be loaded before bootstrapping and it's included in ChangesOrganizer.st. Then load Bootstrap.st. This file contains bootstrapping tools. The source codes of bootstrapped image are included in Mirrors.cs. The loading of this file will take a while. For opening of the console evaluate "Bootstrap start". In the console evaluate command "Bootstrap revert". This commnad will merge mirrors of classes, then it removes unnecessary classes including mirrors and recompiles whole image. The result can be saved using "Smalltalk snapshot: true andQuit: false" This image is not absolutely clean. It contains some obsolete classes (I've got one clean image without obsolete classes, it will no problem to fix it). Have lot of fun -- Pavel Some modifications: If you look at mirror of UIManager, you will see some new messages like onEventSensorStartup. The sender of this message is mirror of EventSensor>>startUp. In the original method is line Smalltalk isMorphic ifTrue:[self flushAllButDandDEvents]. so we need only write the content of the block to the MorphicUIManager -- and so on... This is one set of modifications. There is one correction of current sources -- class AsyncFile used class variable named Error and this name collided with another class name. Some methods contain comment " shrinked ". This is removed functionality and we need to discuss next destiny of such stuff. For example the SecurityManager is dependent on cryptography classes. It's possible to remove it completely but it plays important role during Squeak startup. But without cryptography this class is not complete, so it's good candidate for next refactoring. The last set of interventions are little modifications of souces like in XxxMultiCharacterScanner>>scanMultiCharactersFrom:to:in:rightX:stopConditions:kern:. This method uses class TTCFontSet that is removed. We need to suppose that competent package (with true-type font support) will modify this method or refactor it to enable more elegant way how to solve this. Another example is sLanguageEnvironment class>>startUp etc. I try to have the set of such modifications as small as possible. AutoStart is currently removed from startUpList...

4 10

Strange Noise
by Francisco Garau 01 Apr '06

01 Apr '06

Hi, After quite some time I've started squeaking again. My Toshiba 2450 Laptop makes a constant noise whenever I have a 3.9 image open. It only goes away when I am resizing the windows. I am running a 3.9a-7004 image on Windows XP using the VM marked as 3.7.1 release from Sep 23 2004. The problem does not happen in a 3.9a-6678 image or any of the previous ones. It seems to be related to the introduction of the new handlers (those ones used to resize the windows inside Squeak). Can somebody point me out to the version where these new handlers were introduced? Thanks, Francisco

2 1

SUnit: Skipping tests?
by Andreas Raab 01 Apr '06

01 Apr '06

Hi Folks - I am in the interesting situation that I'm writing a few tests that require large data sets for input and where I don't want people to require to download the data sets. My problem is while it's easy to determine that the data is missing and skip the test there isn't a good way of relaying this to the user. From the user's point of view "all tests are green" even though that statement is completely meaningless and I'd rather communicate that in a way that says "X tests skipped" so that one can look at and decide whether it's useful to re-run the tests with the data sets or not. Another place where I've seen this to happen is when platform specific tests are involved. A test which cannot be run on some platform should be skipped meaningfully (e.g., by telling the user it was skipped) rather than to appear green and working. Any ideas? Cheers, - Andreas

13 44

VM states for ubuntu integration
by Damien Cassou 01 Apr '06

01 Apr '06

Hi, I would like to have more information about vms: - is the amd64 version working ? are the images compatible ? are the sources files compatible ? - is it possible to compile the vm for powerpc on linux ? Thanks

4 5

Jump to page: