December 2011 - Pharo-dev - lists.pharo.org

[Pharo-project] [update 1.4] #14246
by Marcus Denker Dec. 5, 2011

Dec. 5, 2011

14246 ----- Issue 4998: ContextPart>>#runUntilErrorOrReturnFrom: http://code.google.com/p/pharo/issues/detail?id=4998 (reverted) -- Marcus Denker -- http://marcusdenker.de

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Re: [Pharo-project] A possible bug in GZip streams
by Martin Dias Dec. 5, 2011

Dec. 5, 2011

(I am working on Pharo 1.3) On Mon, Dec 5, 2011 at 2:16 AM, Martin Dias <tinchodias(a)gmail.com> wrote: > Hi, > > I get a SubscriptOutOfBounds error when I evaluate: > > | aStream zipStream | > > aStream := ByteArray new writeStream binary. > zipStream := GZipWriteStream on: aStream. > zipStream nextStringPut: ''. > zipStream nextStringPut: ''. > zipStream close. > aStream close. > aStream := aStream contents readStream binary. > zipStream := GZipReadStream on: aStream. > zipStream nextString. > zipStream nextString. > zipStream close. > aStream close. > > The error doesn't happen when I put just one string (instead of two). > > Do you see something wrong in the code? Should I report a bug? > > Thanks, > MartÃn >

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[Pharo-project] OBPane coordinates
by Sean P. DeNigris Dec. 4, 2011

Dec. 4, 2011

Am I hallucinating, or do the OB morph classes use local coordinates e.g. #center reports the distance from the topLeft, which reports 0@0? If this is really happening right now, why is this, and how do I get their global coordinates? Thanks. Sean -- View this message in context: http://forum.world.st/OBPane-coordinates-tp4144519p4144519.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] [update 1.4] #14244
by Marcus Denker Dec. 4, 2011

Dec. 4, 2011

14244 ----- Issue 5048: Move Transcript to Tools Package http://code.google.com/p/pharo/issues/detail?id=5048 Issue 5047: Stream should not print its contents in printOn: http://code.google.com/p/pharo/issues/detail?id=5047 Issue 5053: ZnChunkedReadStream doesNotUnderstand: #next:into: http://code.google.com/p/pharo/issues/detail?id=5053 -- Marcus Denker -- http://marcusdenker.de

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Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass
by Marcus Denker Dec. 4, 2011

Dec. 4, 2011

Hi, We had a look and the problem is that printOn: on Stream is defined to print the contents of the Stream even though it might not be initialized yet (e.g. when creating a Stream instance with #basicNew). The simplest solution is to just not print the contents of Streams in #printOn: http://code.google.com/p/pharo/issues/detail?id=5047 Stream should not print its contents in printOn: Reason: => Debugging leads to change the state of Stream when looking at it => Network streams load all content => unitialized Streams has undefined behavior for printing Solution: remove #printOn: On Fri, Dec 2, 2011 at 9:08 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: >>>> >>>> I only had a look in Pharo 1.4 >>>> It sounds like a subtle bug related to introduction of >>>> SubclassResponsibility in Pharo. >>>> If you revert Object>>subclassResponsibility to its previous version >>>> you get a more reliable error. >>> >>> What would be your hypothesis? Because I'm stuck. >>> error: is also signaling an exception >>> >>> error: aString >>> Â Â Â Â "Throw a generic Error exception." >>> >>> Â Â Â Â ^Error new signal: aString >>> >>> So I wonder why one is more robust. >>> >> >> I'm stuck too, and the Debugger is currently unusable in Pharo 1.4 (I >> just can't step overâ¦) > > Strange. Because I use it. > Do you have a scenario that we can focus on to fix the problem you see. > > >> I give up. I only had time for an easy task... >> >> Nicolas >> >>> >>> >>>> >>>> Nicolas >>>> >>>> 2011/12/1 Larry White <ljw1001(a)gmail.com>: >>>>> I was able to replicate with a clean version of the Seaside 3.0.6 One Click >>>>> download by executing Stream #basicNew in a workspace. Â It did work a couple >>>>> times ok using "do it" from the menu, but seems to lock pretty regularly >>>>> using print or explore keyboard shortcuts. >>>>> >>>>> thanks. >>>>> >>>>> >>>>> >>>>> On Thu, Dec 1, 2011 at 1:33 PM, Larry White <ljw1001(a)gmail.com> wrote: >>>>>> >>>>>> I can do it with control-P (print) in the Workspace. Â I just did it with a >>>>>> single try, though sometimes it takes more than one. Â Speed isn't an issue, >>>>>> I can wait 10 minutes and see it happen sometimes.. >>>>>> >>>>>> I have to take a break now, but when I get a few minutes, I'll try again >>>>>> with a fresh install of the latest Seaside one-click for the mac. >>>>>> >>>>>> thanks. >>>>>> >>>>>> On Thu, Dec 1, 2011 at 1:20 PM, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu> >>>>>> wrote: >>>>>>> >>>>>>> I just tried to hang 1.1.1 (using a traditional linux vm) and a 1.4 image >>>>>>> with a Cog vm (also linux). Â No problems, but I do have questions that might >>>>>>> be important to others trying to reproduce it: >>>>>>> >>>>>>> (1) how fast do you do this? >>>>>>> (2) do you inspect the instances, or just let them get gc'd immediately? >>>>>>> >>>>>>> Bill >>>>>>> >>>>>>> >>>>>>> >>>>>>> ________________________________ >>>>>>> From: pharo-project-bounces(a)lists.gforge.inria.fr >>>>>>> [pharo-project-bounces(a)lists.gforge.inria.fr] on behalf of Larry White >>>>>>> [ljw1001(a)gmail.com] >>>>>>> Sent: Thursday, December 01, 2011 12:56 PM >>>>>>> To: Pharo-project(a)lists.gforge.inria.fr >>>>>>> Subject: Re: [Pharo-project] VM freezes sending #basicNew to Stream >>>>>>> subclass >>>>>>> >>>>>>> I can do it with >>>>>>> >>>>>>> Stream basicNew. >>>>>>> >>>>>>> but I have to invoke it twice. The first time it works ok. >>>>>>> >>>>>>> >>>>>>> >>>>>>> On Thu, Dec 1, 2011 at 12:48 PM, StÃ©phane Ducasse >>>>>>> <stephane.ducasse(a)inria.fr> wrote: >>>>>>>> >>>>>>>> gary >>>>>>>> >>>>>>>> can you post the smallest code that makes the system hangs? >>>>>>>> >>>>>>>> Stef >>>>>>>> >>>>>>>> On Dec 1, 2011, at 4:48 PM, Larry White wrote: >>>>>>>> >>>>>>>>> Hi, >>>>>>>>> >>>>>>>>> Throwing this out there because it may be a bug. >>>>>>>>> >>>>>>>>> I'm running the Seaside one-click install on OS X Lion. >>>>>>>>> Pharo1.3 >>>>>>>>> Latest update: #13302 >>>>>>>>> >>>>>>>>> I can reliably cause my VM to freeze up and need to Force-Quit it from >>>>>>>>> the OS. >>>>>>>>> >>>>>>>>> I'm implementing (copying) the probability logic from the blue book. >>>>>>>>> When I tried to create an instance of the Binomial class, the system hung. I >>>>>>>>> can replicate the problem by sending the message #basicNew to >>>>>>>>> ProbabilityDistribution. ProbabilityDistribution is a direct subclass of >>>>>>>>> Stream and I haven't overridden or modified #basicNew. >>>>>>>>> >>>>>>>>> What's happening is that it fails in the BlockClosure [anObject doit], >>>>>>>>> but only when I instantiate a member of this particular class hierarchy. In >>>>>>>>> the probability classes, a #doIt in a Workspace hits the line "self suspend" >>>>>>>>> in the #terminate method of Process and the VM hangs there. >>>>>>>>> >>>>>>>>> I believe they had ProbabilityDistribution subclass from Stream >>>>>>>>> because sampling from a distribution is like reading from a Stream, but I >>>>>>>>> don't think any there's any actual shared code, so I switched the superclass >>>>>>>>> of ProbabilityDistribution to Object and the code works fine now. >>>>>>>>> >>>>>>>>> Thanks. >>>>>>>>> >>>>>>>>> Larry >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >>> >> > > -- -- Marcus DenkerÂ --Â denker(a)acm.org http://www.marcusdenker.de

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[Pharo-project] Pharo VMs should be more Pharo-like
by Esteban Lorenzano Dec. 4, 2011

Dec. 4, 2011

Hi, Currently, we are linking official VMs for pharo taking directly from Jenkins a version and packaging for download (or for Pharo One-Click). I think this is a temporal solution, we need something better: 1) Pharo VMs should have Pharo Icons. 2) Pharo VMs should be named "pharo" or "pharovm" (better the fist), not "CogVM", which is an internal name. 3) We should include a PLUGINS.txt file with information about present plugins (internal and external) 4) We should include a LICENCE.txt file with all licence information. ... I think that's all :) I know... this is very dumb and clearly not mandatory, but it says a lot about the maturity of our Pharo :) All agree? Should I create a ticket? Cheers, Esteban pd: I'm the only one who does not likes One-Click versions? I would prefer a different package for each platform (Is ugly to have a directory named Pharo.app in linux or windows. Also, no need to have all those duplicated-but-for-different-platform files)

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[Pharo-project] VM freezes sending #basicNew to Stream subclass
by Larry White Dec. 3, 2011

Dec. 3, 2011

Hi, Throwing this out there because it may be a bug. I'm running the Seaside one-click install on OS X Lion. Pharo1.3 Latest update: #13302 I can reliably cause my VM to freeze up and need to Force-Quit it from the OS. I'm implementing (copying) the probability logic from the blue book. When I tried to create an instance of the Binomial class, the system hung. I can replicate the problem by sending the message #basicNew to ProbabilityDistribution. ProbabilityDistribution is a direct subclass of Stream and I haven't overridden or modified #basicNew. What's happening is that it fails in the BlockClosure [anObject doit], but only when I instantiate a member of this particular class hierarchy. In the probability classes, a #doIt in a Workspace hits the line "self suspend" in the #terminate method of Process and the VM hangs there. I believe they had ProbabilityDistribution subclass from Stream because sampling from a distribution is like reading from a Stream, but I don't think any there's any actual shared code, so I switched the superclass of ProbabilityDistribution to Object and the code works fine now. Thanks. Larry

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Dec. 3, 2011

I'm a stream doing nothing (NullObject pattern). I can be handy when a stream is needed and that we need to do nothing (for example a logging in off mode). Stef On Dec 3, 2011, at 11:29 AM, sean(a)clipperadams.com wrote: > Continuing in Collections... > > Today: NullStream > > > Comment Of The Day Contest - One Day One Comment > Rules: > #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). > #2: If you cannot comment it, deprecate it. > Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest > > p.s. this message was sent from a pharo image. Did you know you could easily do that?! >

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[Pharo-project] Monticello enhancing
by Tobias Pape Dec. 3, 2011

Dec. 3, 2011

Dear all, afte Fuel being available for both Squeak and Pharo, I experimented a little bit. So, I put a new snapshot.fuel beside the snapshot.bin in the mcz zips (same for patch.* in mcd). But to make it easier in the future to experiment with things, I included a small facility to extend serializers/materializers or similar things more easily. How is it done? Example: new serializer in MCZ files: After my patch, include MCMczWriter class>>serializerMine ^ [:writer :snapshot | writer writeSnapshotAsMyFormat: snapshot] and MCMczWriter>>writeSnapshotAsMyFormat: snapshot self addString: (self doSomeConversion: aSnapshot) at: 'snapshot.myformat'. as Extension methods in MCMczWriter, and execute MCMczWriter populateSerializers. Now, a new file member is added to every new mcz file. As an example, I have done such thing for Fuel. Don't worry, it just uses the default behavior if Fuel is not present in either the image or the mcz-file. Best, -Tobias PS: for Squeak, see Inbox Monticello-topa.491, And I also have an MCD attached that should help using the code elsewhere.

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[Pharo-project] A commercial question
by GermÃ¡n Arduino Dec. 3, 2011

Dec. 3, 2011

Hi: I'm only starting in the Apple software market and would like to ask the viability of sell desktop software developed with Pharo (I mean commercial sort of trialware software). I know my question is very general, but is focused mainly in the look and feel (I'm pretty sure that can develop any functionality I want) but not sure about the look and feel. The average Apple user could accept the look and feel of a morphic pharo application? (Very different than the osx l&f). Other options? Experiences, suggestions, are more than welcome. I know that the Apple store don't accept Pharo apps, but still if they have sales possibilities, I could try by my own. What do you think? Thanks. -- ============================================ GermÃ¡n S. Arduino <gsa @ arsol.net> Twitter: garduino Arduino Software http://www.arduinosoftware.com PasswordsPro http://www.passwordspro.com Promoter http://www.arsol.biz ============================================

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