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

[Pharo-project] About overlapping packages :(
by StÃ©phane Ducasse Aug. 4, 2010

Aug. 4, 2010

Hi I have worked on the integration of the new package implementation and its synchronisation with MC/PackageInfo. Now I have the following problem: Scenario 1: the user have created a package Foo which contains several classes, some like FooObject in the category Foo-Core, others in category Foo-Others. Now if he creates a package Foo-Core, Foo-Core should contain the classes having Foo-Core as category. I have a problem with PackageInfo semantics since here packages Foo and Foo-Core could contain FooObject. Scenario 2: the user have created a class in the category Foo-Core, and after created a package only named Foo. The classes in category Foo-Core should be added to Foo. But some other packages and categories starting with Foo may exist. Now in the new implementation, classes cannot be two packages at the same time. So I will be forced to implement a checker making sure that there is no such situation and also that we should remove first the Foo package and then create two package Foo-Core and Foo-Others. What do you think? May be such a checker should be hooked into MC right now so we detect anyway such bad situations. For the moment I'm fighting within events and announcements to make sure that I could potentially keep the new implementation of Package and PackageOrganizer in sync with PackageInfo but this is not that simple. Stef

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[Pharo-project] Mac like editing?
by Max Leske Aug. 4, 2010

Aug. 4, 2010

Hi everyone. I have no idea what the status is on the editor in pharo and if there are any plans to do something to / with it. If there's some resource, could you point me to it? In the meantime I thought I'd share my impressions with you; doesn't hurt at least. Since I started developing in Pharo I've struggled with the editor, in particular with the fact that I need to use the mouse a lot to position the cursor which, as all of you know, makes development quite a bit slower. Before I came to Pharo I used to develop in Eclipse and Eclipse supports all shortcuts used inside OS X (and if not you can change the shortcut settings). My favorite shortcuts: cmd + -> : go to end of line cmd + <- : go to beginning of line alt + -> : go to end of the current word alt + -> : go to beginning of current word alt + arrow up : switch the line above with the current line (current line has line number -1, line above has line number +1) alt + arrow down : switch the line below with the current line cmd + l : delete line (I know this shortcut is used to cancel changes at the moment. Still, I haven't found a shortcut yet that deletes a single line) I'd LOVE to see this in Pharo, or at least be able to configure the shortcuts myself. I think, being able to change the shortcuts is important anyway because each developer has an own style. I'd try to come up with a solution myself but I just don't have the time at the moment. Thanks for listening to my yapping :) Max

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[Pharo-project] What is correct way to save image automatically in background?
by Denis Kudriashov Aug. 3, 2010

Aug. 3, 2010

In my app I need update pharo image with some resources (new package, icons, configs...) remotelly. After updating I need save image session. For that app show user some special screen, save image and return to ussual app state. My app has process that do system changes when needed and "commit" it as I wrote. I do something like [self blockUI. self doUpdate. SmalltalkImage current snapshot: true andQuit: false. self unblockUI. ] fork And sometimes after image restart I have image crash due to some world cicle activity and freetype plugin failure. I try little [SmalltalkImage current snapshot: true andQuit: false] fork code from workspace. And situation same - sometimes image cant restart. I never see that when I save image manually. What is correct way to save image for my purpose?

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[Pharo-project] Something I don't see in ImageSegment
by Mariano Martinez Peck Aug. 3, 2010

Aug. 3, 2010

Hi. ImageSegment uses GC to compute the out pointers. Basically, to a given array of roots (a graph) it does: 1) It marks the rootArray and all root objects by turning on the Garbage Collector bit in the object header of those particular objects. 2) Then does a mark pass over all objects. This will stop at our marked roots leaving our segment unmarked in their shadow. 3) Finally, it unmarks the rootArray and all root objects. 4) Only external objects are now marked. The unmarked objects in the graph of objects of the arrays are those who will be put in the WordArray (the segment) and those who are marked to the outPointers. However, I don't see where step 2) is done in Interpreter >> primitiveStoreImageSegment In a piece of such method it does: "Then do a mark pass over all objects. This will stop at our marked roots, thus leaving our segment unmarked in their shadow." savedYoungStart := youngStart. youngStart := self startOfMemory. "process all of memory" "clear the recycled context lists" freeContexts := NilContext. freeLargeContexts := NilContext. self markAndTraceInterpreterOops. "and special objects array" youngStart := savedYoungStart. "Finally unmark the rootArray and all root objects." self longAt: arrayOfRoots put: ((self longAt: arrayOfRoots) bitAnd: AllButMarkBit). ......continue....... But here I see it is only marking Interpreter oops, not all objects. And I don't see where all objects are marked even in the code that follows this little piece. You can see the comment: "Then do a mark pass over all objects" and even without the comment it makes sense to mark all objects in order to detect outPointers. Does anyone has a hint? Thanks Mariano

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[Pharo-project] Limitation of number os literals in a method?
by nullPointer Aug. 3, 2010

Aug. 3, 2010

I get that error when I try save a CLView builded with the UIBuilder More than 256 literals referenced. You must split or otherwise simplify this method. The 257th literal is: 128 Select Proceed to continue, or close this window to cancel the operation. How I can solve that problem? The method than I try save is generated programmatically... Thanks -- View this message in context: http://forum.world.st/Limitation-of-number-os-literals-in-a-method-tp230874… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] Alien on Pharo 1.2 on Mac
by Luc Fabresse Aug. 2, 2010

Aug. 2, 2010

Hi all, We provide a usable version of Alien to Pharo 1.2 (all tests green on OSX). We committed the corrected package on the Ocean squeaksource repository : http://squeaksource.com/Ocean (Alien-Core-LucFabresse.64.mcz) We didn't look in details to the method SystemDictionary>>recreateSpecialObjectsArray introduced by Alien-Core-63. It is now unsed because Smalltalk points to a SmalltalkImage. This need to be checked before possibly removal. Another point would be to update the metacello configuration ConfigurationOfAlien. Luc and Noury

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[Pharo-project] Aida/Web now loads and runs well on Pharo 1.1
by Janko MivÅ¡ek Aug. 2, 2010

Aug. 2, 2010

Hi guys, I just made Aida ready on new and wonderfull Pharo 1.1. and now Aida installs and run nicelly and even side by side with Seaside. You can even run both on the same Swazoo web server, which is also included. Just evulate DEVImageWorkspaces openExternalProjectWorkspace then evaluate loads of both Seaside and Aida, then start both, for Aida evaluate: SwazooAida demoStart "open http://localhost:8888 in your web browser" Best regards Janko -- Janko MivÅ¡ek AIDA/Web Smalltalk Web Application Server http://www.aidaweb.si

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[Pharo-project] [ANN] DrGeo release 10.08
by Hilaire Fernandes Aug. 2, 2010

Aug. 2, 2010

Dear all, I am please to announce the DrGeo release 10.08. This is an universal application working identically for GNU/Linux, Windows and Mac OS X. http://blog.ofset.org/hilaire/index.php?post/2010/07/30/DrGeo-release-10.08… Hilaire

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[Pharo-project] cog-based image crashes on mac
by Tudor Girba Aug. 2, 2010

Aug. 2, 2010

Hi, I have been using the Cog VM exclusively for several months now, and from time to time it crashes on me without leaving any trace in debug log. One frequent cause for the crash that I noticed is dealing with Monticello (both reading and writing). Does anyone experience similar things? Am I doing something wrong? The image I got is based on the sources from 27.06.2010. Perhaps a more general idea: given that this VM brings an important improvement, do we want to have a more concerted effort to beta-test it? Cheers, Doru -- www.tudorgirba.com "It's not how it is, it is how we see it."

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[Pharo-project] how do I turn off "smart" quotes in Pharo Seaside one-click image
by merlyn＠stonehenge.com Aug. 2, 2010

Aug. 2, 2010

In Squeak, the preference pane includes a "smart quotes" setting (defaulting on, so I turn it off immediately). I don't see one for Pharo. It appears to be stuck on. I need to turn this feature off, or my typing speed drastically reduces, and my annoyance level is greatly increased. It's not under Editing (Smart Updating isn't it). Where's the preference? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 <merlyn(a)stonehenge.com> <URL:http://www.stonehenge.com/merlyn/> Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion

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