August 2010 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] [Sugar-devel] [ANN] DrGeo 10.08
by Bert Freudenberg Aug. 6, 2010

Aug. 6, 2010

On 06.08.2010, at 08:54, Hilaire Fernandes wrote: > Dear all, > > I am please to announce the release 10.08 of the DrGeo activity. > > http://blog.ofset.org/hilaire/index.php?post/drgeo-xo-10.08-release Congratulations! For people unfamiliar with Squeak, you might want to add a note about how to quit (e.g., not to save when asked). Also, I had to manually install the bundle. After downloading, Sugar did not recognize it as an activity. I guess your wiki does not serve the right mime type. Uploading to aslo might be better (although it would be nice if Sugar was a little more forgiving). This is on the OLPC 260py build (Sugar 0.88.1). - Bert -

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[Pharo-project] Are the bytecodes correct?
by James Ladd Aug. 6, 2010

Aug. 6, 2010

Hi All, I asked about primitives earlier and found out that there are quite a few new primitives than those listed in the blue book. Very useful. See Re: [Pharo-project] Additional Primitives? This leads me to ask, are all the bytecodes as listed in the blue book or are there differences I should know about ? Rgs, James.

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[Pharo-project] [ANN] ConfigurationOfMagma for Pharo 1.0, Pharo 1.1 and Pharo 1.2
by Miguel Enrique CobÃ¡ MartÃnez Aug. 6, 2010

Aug. 6, 2010

Hi all, a new version of ConfigurationOfMagma is available for Pharo. Notes: Pharo 1.0 ---------------------- - 1.1r1 is the last versions that works in Pharo 1.0. This is because upstream Magma code depends on code that only exists on Pharo 1.1 and superior. - Pharo 1.0 uses Preferences to enable/disable the underscore as assigment in code. This release captures current value of this preference. Enables it for loading Magma and restores it to the original value after installing Magma. Pharo 1.1, Pharo 1.2 ---------------------- - The configuration for these Pharo releases is based on the one from Pharo 1.0. - 1.1r2 uses a new baseline because Magma has a new package dependency (Ma files additions). - Pharo 1.1 and superior uses Scanner allowUnderscoreAsAssignment instead of Preferences. The current value is captured and restored after installation of Magma. - Pharo 1.1 and superior doesn't include FlapTab class anymore. Magma adds some methods to it so the Configuration adds an empty class named FlapTab before installing and removes from the system after installing. This avoid a warning prompt when installing Magma. - This Configuration includes support for installing Magma releases previous to 1.1r2. Those versions should install correctly on Pharo 1.1 and greater but if a lot of problems are detected, the support for those old versions will be removed, and only 1.1r2 and newer versions will be supported. Now that Pharo has Universes, Magma has different ConfigurationOfMagma in each universe for Pharo. Each of those Configuration install the appropriate packages in Pharo. Installing Magma Pharo 1.0 --------------- Evaluate: Gofer new squeaksource: 'UniverseForPharo10'; package: 'ConfigurationOfMagma'; load. And then, one of: ConfigurationOfMagma project latestVersion load: 'Client'. ConfigurationOfMagma project latestVersion load: 'Server'. ConfigurationOfMagma project latestVersion load: 'Tester'. latestVersion is 1.1r1 Pharo 1.1 --------------- Evaluate: Gofer new squeaksource: 'UniverseForPharo11'; package: 'ConfigurationOfMagma'; load. And then, one of: ConfigurationOfMagma project latestVersion load: 'Client'. ConfigurationOfMagma project latestVersion load: 'Server'. ConfigurationOfMagma project latestVersion load: 'Tester'. latestVersion is 1.1r2 Pharo 1.2 --------------- Evaluate: Gofer new squeaksource: 'UniverseForPharo12'; package: 'ConfigurationOfMagma'; load. And then, one of: ConfigurationOfMagma project latestVersion load: 'Client'. ConfigurationOfMagma project latestVersion load: 'Server'. ConfigurationOfMagma project latestVersion load: 'Tester'. latestVersion is 1.1r2 Comments and bugs accepted. Enjoy. -- Miguel CobÃ¡ http://miguel.leugim.com.mx

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[Pharo-project] Analog to Dolphin's CompositePresenter
by Schwab,Wilhelm K Aug. 6, 2010

Aug. 6, 2010

Gary, all, I am far from comfortable with Polymorph design and programming, but I have managed stick some controls on standard windows. Now I need to do something that would benefit from composition of an image and a selection mask into something that allows the mask to be edited while "scrubbing" over the image. Then those get paired, and then the pairs go into sequences. The pairing can be done with tabs, and maybe a "copy from peer" button. I think I can manage that. My question is on how to make what in Dolphin is called a CompositePresenter, which are useful critters. They are not directly tied to a top-level shell, but sending #show to them will create just that, mostly for testing purposes. Is there already something like this in Polymorph? ComposableMorph might be a place to start?? Is there a better way? Bill

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[Pharo-project] Basic question about globals variables
by Mariano Martinez Peck Aug. 6, 2010

Aug. 6, 2010

Hi. I know this is a newbie question, but there is something I don't understand about globals. I am writing a piece of code, and I refer to "a class" that does exist. Suppose: testSomething NonExistenteClass Whem I accept the method, a popup brings saying it doesn't exist...etc. Then, I can define as global. If I then evaluate: Smalltalk globals at: #NonExistenteClass the key exist and it has nil as value. Perfect. So..if I understand well, all these globals variables AND classes are stored in this globals, which is the only instance of SystemDictionary (for the moment). Now my question is, where are nil, true, false, etc stored? I know there are only one instance of UndefinedObject, False, True, etc have only one instance...but WHERE are they stored? who keep them? They don't seem to be in SystemDictionary. Why no? I did a "chase pointers" to nil for example, and it says "CLASS: SmalltalkImage class subclasses: UndefinedObject" I still don't understand :( Thanks for any hints Mariano

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Re: [Pharo-project] Additional Primitives?
by James Ladd Aug. 6, 2010

Aug. 6, 2010

Wow this list is fast and great at answering questions. Thank you all. > > Message: 7 > Date: Thu, 5 Aug 2010 20:12:17 -0300 > From: Javier Pim?s <elpochodelagente(a)gmail.com> > Subject: Re: [Pharo-project] Additional Primitives? > To: Pharo-project(a)lists.gforge.inria.fr > Message-ID: > <AANLkTimAs6B4QtTJmsRGgOBvBpFqeCC0rOc4Rx-oZOcb(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > There you'll have to refer to VMMaker package. The answer you want is in > Interpreter class>> #initializePrimitiveTable.It says: > <snip>

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[Pharo-project] Additional Primitives?
by James Ladd Aug. 5, 2010

Aug. 5, 2010

Hi All, When I ask CompiledMethod #primitive i get a value back which the method comment says is the primitive index. In the Blue Book this index is in range 0 - 127, but I have an index 259. Where can I find documentation on what the primitive indexes mean? ie: What does primitive 259 do. Rgs, James.

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[Pharo-project] eCompletion tweak for smart characters
by Tim Mackinnon Aug. 5, 2010

Aug. 5, 2010

Guys - this is my first attempt at a contribution - and I'm not sure how literally to take the advice on "how to contribute to Pharo" for a small change. Should I create an issue, and post it here (happy to do that, but wondered if conversation might be useful first as I'm new to this). Given that I'm not sure what the relationship between eCompletion and oCompletion is (someone mentioned the latter is built on top of the former?) - so maybe I'm barking up the wrong tree, however I was impressed with how much quicker Lucas' Hudson built pharo image was with eCompletion so I've been trying that for a few days (although I've noticed some mails on oCompletion but haven't gone back to retry it). Anyway - I have attached a change set that changes how smart characters work - instead of turning them off because half of the time they do the wrong thing for me and I madly press delete, I wanted to preserve the other half of the time when I'm entering new code and they give me a helpful template. My proposed fix is for the following scenario - if I go to add an extra bracket around an expression (becuase I later realise that I need to designate a keyword expression) I get two brackets - and then I backspace and they both go, so then I do it again and press delete... Instead I think there is a heuristic which says that says if you type a smart character with the cursor next to a non-whitespace item, you probably don't want the matching character. e.g. 5 max: 4 > 3 ifTrue: [] {cursor here} - and I click next to the 4 (or the 5) to put the bracket and I get 2, and I really only want one. My patch tries to address this. I also didn't see any test cases for this stuff (and possibly some could be written - should I try to do that too?). Tim

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[Pharo-project] ProgressDisplay package updated to improve portability to Pharo
by Ralph Boland Aug. 5, 2010

Aug. 5, 2010

I have released an update to ProgressDisplay package to SqueakSource. Changes are to improve portability to Pharo and should not affect Squeak 4.1 users. The changes fix a number of problems in Pharo but a few remain. The remaining problems affect examples only, not the ProgressDisplay code itself. The problems with examples are: 1) The package uses the Squeak 4.1 Generators class which is not in Pharo. This will cause a few examples to fail unless the Generators class is installed first. Hopefully, the Generators class will be included in a future release of Pharo so this problem will go away. 2) The examples for testing user interrupts fail because the code uses the InputSensor class which is not in Pharo. The user interrupt code doesn't work in Squeak 4.1. If catching user interrupts is turned on the interrupts are caught but not processed until the progress bar closes. :-( I don't know how to fix this problem in Squeak 4.1 so I am hoping someone will tell me how or fix it for me. Meanwhile, if someone wants to implement a working version for Pharo that would be great (or tell me what to do). Keep in mind that, if possible, I need a version that will work in both Pharo and Squeak. Regards, Ralph Boland

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[Pharo-project] Code autocompletion on not really fast machines
by laurent laffont Aug. 5, 2010

Aug. 5, 2010

Hi, I'm currently using Pharo 1.1 on a Pentium 3Ghz ~ 4 years old machine on Linux. I feel that code editing is slow, auto-completion can hang the GUI for 2-5 seconds, especially when there's undeclared variables (I usually set them using the dialogs when I accept the code). Am I alone ? Laurent Laffont http://pharocasts.blogspot.com/ http://magaloma.blogspot.com/

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