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[Pharo-project] how should Pier file structures be serialized with Fuel?
by Yanni Chiu Nov. 19, 2011

Nov. 19, 2011

An earlier version of Fuel did not having the substitution feature. So, I had custom mapping code to pre-process the structures before passing to Fuel for serialization, and to post-process the deserialized structures. The main purpose of the code was to nil out the PUSecurity objects, because they were linked to too many other Pier objects. I'm now eliminating the custom mapping code by using Fuel substitution. The PRFile object was handled by saving the file contents in an instance variable of the mapping object. I've eliminated the custom mapping object. Now, how should the file contents be saved/restored, using the substitution feature? I'm thinking of substituting a proxy object, which somehow "becomes" a PRFile after deserialization. Any other suggestions?

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[Pharo-project] [update 1.4] #14230
by StÃ©phane Ducasse Nov. 18, 2011

Nov. 18, 2011

14230 ----- - Issue 4943: Failing Test: SelfEvaluatingObjectTest. Thanks Nicolas Cellier. http://code.google.com/p/pharo/issues/detail?id=4943 - Issue 3348: use #shouldBePrintedAsLiteral instead of #isLiteral when printing or storing characters and arrays. Thanks vonbecmann and levente. http://code.google.com/p/pharo/issues/detail?id=3348

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[Pharo-project] [update 1.4] #14229
by StÃ©phane Ducasse Nov. 18, 2011

Nov. 18, 2011

14229 ----- - Issue 3129: menu auto decoration should be removed. Thanks Alain Plantec. Gary may be this can impact you so watch out :). http://code.google.com/p/pharo/issues/detail?id=3129

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[Pharo-project] the true power of pair programming
by StÃ©phane Ducasse Nov. 18, 2011

Nov. 18, 2011

Hi guys I wanted to share that with you. Today I wanted to do something than administration or duties for my job. So we sat with igor and pair programmed. We took a bad part of the systemâ¦. HandMorph>>processEvents and HandMorph>>generateMouseEvent: and we started. It was the kind of adventure that alone looks like a dark and humid tunnelâ¦.boring painful and tedious. Now we started and banged our heads against it and little micro steps by little micro steps we continuedâ¦ The beginning was muddy and crashing. At the end we can generate MorphicMouseEvent using nicely created systemEvent (instead of the ugly third, fourth, sixth and second of courseâ¦ ugly eventBuffer code), we started to have double dispatch instead of these terrible case statements. >From time to times we felt discouraged (you know the kind of state of mind - where you think that nothing will happen and that the system is so old and circumvolved and that your dreams will not come true). But slowly eating cookies and discussing design, sharing the keyboard abstractions and good code emerged and this was just great. This is not finished and we will continue. But this was cool. Two guys chatting and eating cookies do not feel the darkness of the tunnel and can lit some fire to see further down. Stef Gofer squeaksource: 'EventModel' package: 'EventModel'; load Look at EventModel-System and SystemInputEvent hierarchy and the handle* methods in *EventModel of HandMorph. The adventurous can even try :) | ann evt | ann := SystemInputEventAnnouncer new. ann subscribe: SystemInputEvent send: #dispatchEvent: to: World activeHand. 10 timesRepeat: [ 500 milliSeconds asDelay wait. evt := Sensor nextEvent. evt ifNotNil: [ ann handleEvent: evt ]. ]

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[Pharo-project] New Cog VMs available [was [squeak-dev] VM cog crash]
by Eliot Miranda Nov. 18, 2011

Nov. 18, 2011

Hi All, new VMs at http://www.mirandabanda.org/files/Cog/VM/VM.r2515/. These fix a code generator bug and as a result produce slightly better code in rare circumstances. Anyway, Hans' case below will no longer crash the VM :) Enjoy. On Thu, Nov 17, 2011 at 5:38 AM, Baveco, Hans <Hans.Baveco(a)wur.nl> wrote: > I managed to crash the (latest) cog VM consistently, producing the > attached crash dump (containing two crashes). > Debugging the code carefully I found that somewhere in the process of > setting an instance variable of an object at the top of a tree-like > structure, by traversing the tree downwards and back (lazy initializing > instance variables), a clearly wrong method was executed: > > setCenter: aPoint > > center := center > > > after correcting this the crashes didn't occur anymore. > Not sure how important this is, but surprising it was, though! > > Hans > > > > -- best, Eliot

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[Pharo-project] OpenGL in Pharo?
by Michele Lanza Nov. 18, 2011

Nov. 18, 2011

Dear all, I wanted to ask whether there are some news I missed with respect to having a decent OpenGL framework in Pharo. I checked the following page: http://book.pharo-project.org/book/LanguageAndLibraries/3DGraphicsAndOpenGL/ ..but it sounds all a bit outdated and not something I can rely on in the long run. Ideally there should be something like the Jun framework (available for VisualWorks), but when I met the Jun maker at ICSE and I asked him whether there were any plans of porting Jun to Pharo he told me that it was not in their plans. Long talk, short sense: Is anyone working on OpenGL for Pharo? Cheers Michele

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[Pharo-project] Unsubscribing for Announcements
by Sean P. DeNigris Nov. 18, 2011

Nov. 18, 2011

I really like Announcements! It's so much easier to update complex GUIs when you can pass state :) I hit one glitch when unsubscribing... The CollaborActive book suggests unsubscribing in #delete. For complex UIs, this doesn't seem to work because #delete is only called for the one morph that was deleted, not for its submorphs (which may need to unsubscribe). I tried this: MyMorph>>delete super delete. "Must come first. Deleting a submorph before self = emergency evaluator" aSubmorphThatNeedsToUnsubscribe delete. SubmorphMentionedAbove>>delete self inventory announcer unsubscribe: self. super delete. But it seems like a lot of work and coupling. Is there no hook that is guaranteed to be called when a morph is going away - i.e. it or a morph in the owner chain is being deleted? Thanks. Sean -- View this message in context: http://forum.world.st/Unsubscribing-for-Announcements-tp3220751p3220751.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] WideString performance
by Dennis Schetinin Nov. 18, 2011

Nov. 18, 2011

Hi! Parsing a UTF-8 CSV file with Russian symbols (using CSVParser), I found it really slow. It takes about 5 seconds to read a 53Kb file (136 lines) and several minutes to parse a 3.4Mb file (about 8K lines). Profiler shows that nearly all the time is eaten by WideString >> at:put: which is invoked from WriteStream>>nextPut:. If I'm not mistaken, this means that <primitive: 66> there does not work in this caseâ¦ So, to be short: is there a simple way to improve the performance? TIA -- Dennis Schetinin

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Nov. 17, 2011

Begin forwarded message: > From: Johannes Rasche <johannesrasche(a)mac.com> > Subject: * Smalltalk User Group > Date: November 17, 2011 12:27:15 PM GMT+01:00 > To: pharo-project-owner(a)lists.gforge.inria.fr > > as Sven just announced the Belgian Smalltalk User Group (BSUG) meeting: > > are there Pharo people in Berlin (I didn't realize it up to now)? > > It would be great to have a local community with the opportunity for face-to-face exchange > and potential cooperation > > Johannes > > -- > Johannes Rasche Hagelberger Str. 56 10965 Berlin mail johannesrasche(a)mac.com mobile +49 1577 175 04 75

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[Pharo-project] editing a project description on ss3.gemstone.com
by Alexandre Bergel Nov. 17, 2011

Nov. 17, 2011

Hi! On squeaksource.com, the project description can contains code using the <pre>...</pre> tag, as in: <pre> Gofer new url: 'http://ss3.gemstone.com/ss/SPIRIT'; package: 'ConfigurationOfSpirit'; load. (Smalltalk at: #ConfigurationOfSpirit) project lastVersion load </pre> It seems this does not work with ss3.gemstone.com. Has this tag been replaced with something else? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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