Squeak-dev February 2007

squeak-dev@lists.squeakfoundation.org

161 participants
240 discussions

strange error while loading glorp from squeaksource
by Norbert Hartl 26 Feb '07

26 Feb '07

Hi, just forget my previous post. I was again as fast as lazy. It is written that there are more pieces to be installed (it is uppercase :) ) But each of GlorpPreload, Glorp etc having its own module is very confusing. Norbert

1 0

strange error while loading glorp from squeaksource
by Norbert Hartl 26 Feb '07

26 Feb '07

Hi, I tried to load the newest version of glorp from the squeaksource and got a strange error. While loading an error window pops up displaying an syntax error tableForALLNothing more expected ->_CONSTRAINTS: aTable This seems like a misinterprentation of _. Has this some- thing to do with the change of the _ handling in squeak or is this a buggy monticello version? Btw. what is the best version of monticello to use? That from wiresong or from impara? thanks, Norbert

1 0

how things go wrong between packages
by Lex Spoon 26 Feb '07

26 Feb '07

Most of the problems that came up in putting together the 3.9 stable universe were the kind Viktor ran into with Classboxes. The individual package is simply bitrotten and no longer plays nicely is the current version of Squeak. It refers to a class no longer existing, or it defines a class that now has a conflicting definition in the standard image. A more incidious kind of prolbem is those due to interactions between multiple packages. There were 5 such problems I found with the 3.9 stable universe, simply by trying to load all of the packages simultaneously into the same image. The problems were: Package Algebraic overwrites the "new" method in class Matrix, leading to other code crashing. Zigzag opens and enters a new project when it starts, and thus causes the package-loading thread to stop. This is a classic problem from using a SAR for distribution. One way to repackage this would be to post two packgaes, one with an mcz with the code, another with the morphic demo project. Package Universes and SqueakMap both can load projects just fine. ODBC overwrites the TimeStamp class with its own, and the tools quietly allow this. (Incidentally, people, we have had the ANSI-standard DateAndTime since before any of the various TimeStamp classes were posted. Let's use the good stuff.) SmallDEVS defines a global variable Timer, which conflicts with a class variable in Exupery. I wish the loader would allow this situation, but in 3.9 it does not. TimeZoneDB redefines DateAndTimeNow in such a way that TimeStamp no longer works. Specifically, "TimeStamp now" returns a DateAndTime instead of a TimeStamp. While I think we should deprecate TimeStamp, we must keep it working for now due to all the packages still using it. By the way, I found it hard to debug where these problems came from. I'd see a crash in one package, and then have to figure out why, for example, Matrix no longer functions correctly. I don't know what went wrong; either we need to use Monticello more, or we need to update Monticello to provide more help when these overwrites happen. Lex

3 5

RFB (VNC) problem
by Cédrick Béler 26 Feb '07

26 Feb '07

Hi, I've seen the RFB package has been updated for the 3.9 version (RFB-ikp.3.mcz). This is working better (at leat on my linux) but not with ultravnc on windows. I think there are still problems when the encoding has to be guessed. RFB caught #hex not understood in SmallInteger... Probably in the method RFBSession>>encodingUnknown: encoding changing #hex in #asString like in the fix provided here: http://bugs.impara.de/view.php?id=5043 seems to solve the problem. Cédrick

1 0

KernelImage news - Seaside and the shrinking script
by Pavel Krivanek 26 Feb '07

26 Feb '07

Hi all, There are some news about the KernelImage project: - the better structure of the documentation page - some method movements between packages - less overrides in the MinimalMorphic package (UIManager refactorings) - small simple shrinking script from the KernelImageMC to the KernelImage - now the KernelImage is fully independent on the Squeak 3.9 - the newest versions of Seaside 2.8 can be loaded directly from the SqueakSource repository - Seaside 2.8 now contains only one override. If we will fix it, the basic packages and Seaside will be independent so we will be able to manage it (modify and publish packages) using some handy Seaside application - no more console torment See: http://www.comtalk.net/Squeak/98 Cheers, -- Pavel

1 0

[ANN] SIXX 0.2 is available for Squeak 3.9
by Masashi UMEZAWA 26 Feb '07

26 Feb '07

Hi, We have upgraded SIXX to 0.2. The new version is available for all platforms (Squeak, VisualWorks, and Dolphin Smalltalk). SIXX 0.2: http://www.mars.dti.ne.jp/~umejava/smalltalk/sixx/index.html (Also loadable from SqueakMap). http://map.squeak.org/package/60663648-6b83-4b61-9f06-e58c33565d75/autovers… SIXX now supports 'shape changed' class deserialization. Even if class definitions are changed between SIXX file and the current image, you can read the file via SixxShapeChangeReadStream. Other features: - Safer Boolean reading - Added a new option "SixxSettings>>useNCR" - You can specify whether to write multi byte string by numeric character references or not. - Unicode string (de)serialization support (Squeak, VW) - Added more hook methods for customizing serialization/deserialization. More details are described here: http://swikis.ddo.jp/umejava/40 Enjoy! -- [:masashi | ^umezawa]

2 6

Towards a better IDE in Squeak
by David Röthlisberger 26 Feb '07

26 Feb '07

Hi all, I'm currently doing a PhD under the supervision of Stephane Ducasse and Oscar Nierstrasz at the university of Bern, Switzerland. My main research interests are in the context of Integrated Development Environments (IDEs). I'm planning to work on the Squeak IDE to see how the IDE of a dynamic object-oriented programming language can be improved and extended. Especially, I want to experiment with different metaphors to browse and navigate source code, with new metaphors to present static (i.e., classes, methods, source code) as well as dynamic aspects (i.e., objects, relationships between objects, etc.) of a program in the same IDE, with new ways to modify and edit source code, etc. I believe that we can do more in a better way these days than what we have in the current IDE in Smalltalk or in Java. I believe that the IDE of the future can help the programmer to program more efficiently and with less errors by giving him more insights into the program being developed or by providing him with better tools and guides during his daily work. I believe that what we have now as IDEs are far away from what is possible to have and even far away from what we actually need to be effective and efficient in our daily work. This is a bit sad for Smalltalk, because a long time ago it had the best IDE, but now Eclipse is getting better and better while the IDE of Smalltalk / Squeak stays more or less the same. During my PhD I want to see how we can get something better out of the current Squeak IDE. I write this message out of two reasons: First, I would like to know if you have ideas for things that are missing in the current DIE of Squeak, "things", tools, metaphors, ideas that you would like to see implemented. What are your ideas of how an IDE could help you to work more efficiently in your daily work? Where is the current IDE in your way, where is it not good enough, what could be better? What do you miss, what do you need to get a better IDE? Second, I would also like to do kind of empirical studies in the future to somehow validate the effectiveness and efficiency of new approaches for an IDE, hence I need subjects performing some experiments in these future IDEs and I also need data about how you use your IDE (e.g., how you browse source code, how and where you write source code, with which tools, etc.). Will you be willing to provide me with these data recorded by some non-invasive recordings tools you can simply load in your image and which will then save the recorded data to a file which you would then send to me? Are you also willing to perform some experiments in new IDEs, e.g. trying and playing with them, use them for a project of yours, etc.? For me it is important to know if I can motivate enough people to do a serious empirical study. Without that, I would have a hard time to "prove" that a new approach to e.g. navigate source code is indeed useful and promising, because this is very much dependent on personal feelings and impressions. Only a broader study can hence "prove" the general usefulness (or uselessness) of such a new approach or metaphor. Thanks for your help. Kind regards, David

25 41

Squeak Wiki Administrator
by Giovanni Corriga 26 Feb '07

26 Feb '07

Hi all http://wiki.squeak.org still lists Mark Guzdial as the administrator for the Squeak wiki. Should that be corrected? Giovanni

1 0

[FUN] Squeak Championship
by Edgar J. De Cleene 26 Feb '07

26 Feb '07

Any sports change his ranking , the last year champion could be number 99 this year. I collect this only for fun using Google , taking election names and some others 405.000 de Andrew P. Black 16.900 de Todd Blanchard Squeak. 738 de Giovanni Corriga Squeak. 31.100 de Cees de Groot Squeak. 104.000 de Stéphane Ducasse Squeak. 204 de Tansel Ersavas Squeak. 47.000 de Bert Freudenberg Squeak 35.900 de Brad Fuller 19.400 de Keith Hodges Squeak. 21.900 de Craig Latta Squeak. 30.000 de Yoshiki Ohshima Squeak. 53.400 de Tim Rowledge Squeak. 598.000 de Alan Kay Squeak. 60.700 de Dan Ingalls Squeak 111.000 de Kim Rose Squeak. 138.000 de Ralph Johnson Squeak. 17.600 de Edgar De Cleene Squeak 300.000 de Steve Jobs Squeak. 195.000 de Bill Gates Squeak. Gives some to think ... Edgar __________________________________________________ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas

4 4

Morphic Layout
by Andrew P. Black 25 Feb '07

25 Feb '07

In my continuing quest to make sense out of Morphic, I've been wrestling with the following problem; I hope that someone can help me to a better solution. I have a Morph, which contains some subMorphs. For the sake of concreteness, the Morph is a view on a die (just a square with rounded corners), and the subMorphs are the spots that represent the six, or the four, or whatever. I have code that changes the view when the die is thrown; this code works by removing the current set of spots and adding the new ones. The spots are laid out manually, not using layout policies or anything fancy; the size and position of the spots is computed from the current bounds. When the outer morph, the DieView, is resized, I obviously need to re- do the layout of the spots. So I wrote something like: DieView>>layoutChanged super layoutChanged. self changeSpotsTo: model value. which takes advantage of the existing code to set up the spots again. The problem is that the changeSpotsTo: method does its work by deleting the current set of spots and adding a new set. The removal and addition of submorphs causes layoutChanged to be sent to the enclosing Morph, the DieView, which causes an infinite call cycle. The following code works: layoutChanged super layoutChanged. alreadyComputingLayout ifTrue: [^ self]. alreadyComputingLayout := true. self changeSpotsTo: model value. alreadyComputingLayout := false but I'm ashamed to show this to my class :-(. What is the "right" way to solve this problem? Another way of asking this question might be: layoutChanged is used to propagate changes in layout UP the Morphic containment hierarchy. How should changes be propagated DOWN the hierarchy? Andrew Andrew P. Black Department of Computer Science Portland State University +1 503 725 2411

2 1

← Newer
1
2
3
4
5
6
7
8
...
24
Older →

Jump to page: