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

Re: [Pharo-project] [COTDC] 87 - TextStream

by Mariano Martinez Peck

Hi Sean. Maybe we can also cc pharo-users ? :) On Thu, Dec 1, 2011 at 4:19 PM, Sean P. DeNigris <sean(a)clipperadams.com>wrote: > Continuing in Collections... > > Today: TextStream > > > 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 > > -- > View this message in context: > http://forum.world.st/COTDC-87-TextStream-tp4128886p4128886.html > Sent from the Pharo Smalltalk mailing list archive at Nabble.com. > > -- Mariano http://marianopeck.wordpress.com

Dec. 1, 2011

[Pharo-project] SystemNavigation vs. SystemOrganizer

by Sean P. DeNigris

SystemNavigation default. -> an object that let's you navigate the current system SystemOrganizer default. -> ??? To get what I would expect from above, it seems I need to access the global SystemOrganization. Does anyone else find this confusing? Sean -- View this message in context: http://forum.world.st/SystemNavigation-vs-SystemOrganizer-tp4131010p4131010… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

Dec. 1, 2011

Re: [Pharo-project] [COTDC] 87 - TextStream

by laurent laffont

On Thu, Dec 1, 2011 at 4:19 PM, Sean P. DeNigris <sean(a)clipperadams.com>wrote: > Continuing in Collections... > > Today: TextStream > > I'm a Stream of Text objects. ex: |ts| ts := TextStream on: (Text new: 50). ts nextPutAll: 'I ' asText. ts nextPutAll: 'love' asText allBold. ts nextPutAll: ' Pharo'. TextMorph new newContents: ts contents; openInWindowLabeled: 'TextStream test' Laurent > > 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 > > -- > View this message in context: > http://forum.world.st/COTDC-87-TextStream-tp4128886p4128886.html > Sent from the Pharo Smalltalk mailing list archive at Nabble.com. > >

Dec. 1, 2011

Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by Nicolas Cellier

2011/12/1 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr>: > > On Dec 1, 2011, at 10:16 PM, Nicolas Cellier 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 over...) 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 >>>>>> >>>>>> >>>>> >>>> >>> >> > >

Dec. 1, 2011

Re: [Pharo-project] SystemTracer

by StÃ©phane Ducasse

On Dec 1, 2011, at 10:19 PM, Igor Stasenko wrote: > On 1 December 2011 23:15, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: >> Hi guys >> >> I made sure that SystemTracer is not invoking deprecated method in 1.4 >> Now when I execute >> SystemTracer2 writeImage: 'clone.image' >> the process finishes, the image I obtain start but the UI is not working. >> >> Benjamin was it working when you tried with igor? >> > > Yes, we had a working image, but not without some voodoo dance. > But i don't remember what we did. > In Hazel we are replacing a process, so there is no UI thread. A > SystemTracer alone, however should copy stuff as it is. I just tried in 1.3 and I get the same problem. The UI is damaged and no interaction. We should have a look at that. BTW are you better or still sick? Stef > > > -- > Best regards, > Igor Stasenko. >

Dec. 1, 2011

Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by StÃ©phane Ducasse

On Dec 1, 2011, at 10:16 PM, Nicolas Cellier 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 "Throw a generic Error exception." ^Error new signal: aString So I wonder why one is more robust. > > 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. 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. I just did it with a >>> single try, though sometimes it takes more than one. 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). 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 >>>>> >>>>> >>>> >>> >> >

Dec. 1, 2011

Re: [Pharo-project] SystemTracer

by Igor Stasenko

On 1 December 2011 23:15, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > Hi guys > > I made sure that SystemTracer is not invoking deprecated method in 1.4 > Now when I execute > Â Â Â Â SystemTracer2 writeImage: 'clone.image' > the process finishes, the image I obtain start but the UI is not working. > > Benjamin was it working when you tried with igor? > Yes, we had a working image, but not without some voodoo dance. But i don't remember what we did. In Hazel we are replacing a process, so there is no UI thread. A SystemTracer alone, however should copy stuff as it is. -- Best regards, Igor Stasenko.

Dec. 1, 2011

Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by Nicolas Cellier

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. 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 >>>> >>>> >>> >> >

Dec. 1, 2011

[Pharo-project] SystemTracer

by StÃ©phane Ducasse

Hi guys I made sure that SystemTracer is not invoking deprecated method in 1.4 Now when I execute SystemTracer2 writeImage: 'clone.image' the process finishes, the image I obtain start but the UI is not working. Benjamin was it working when you tried with igor? Stef

Dec. 1, 2011

Re: [Pharo-project] Call for your input on questions you ask yourselves during merge

by StÃ©phane Ducasse

thanks marcus. I will post the list I have once more people reply :) Stef On Dec 1, 2011, at 9:45 PM, Marcus Denker wrote: > > On Nov 29, 2011, at 4:25 PM, StÃ©phane Ducasse wrote: > >> Hi guys >> >> We are writing some articles on the work of veronica to support merging >> activities. We need your input great smalltalk community :) >> What are the questions that you ask yourselves when you are/want to merge >> some code in your project? >> We would like to do a compilation of questions and also evaluate how the >> solution of veronica solves them or part of them. >> >> Here are some typical questions we asked ourselves. >> - What other changes did this change require? >> - Can I integrate this change right now? >> - How large it is? >> - Who made it? >> - Is it still valid (when I'm working on an old change)? >> - Is this change impacted by a change that happened in another >> branch of my software? >> > > - Which Packages are touched by the change? > - Are the tests green after? > - How stable is the code that is changed by this patch (that is: Was the code changed > a lot recently?) > - Is the changed code actually used? How is is used? --> in the sense of is that code > "hot", e.g. is is used to render the current desktop? Is is needed when starting the image? > Is is executed when merging changes? > - What is the status of the commiter? Did he commit a lot good code or did his/her past > changes lead to corrections all the time? > - are there other bugs reported that are related to the change? > - are there failing tests related to this change? > > Marcus > > > -- > Marcus Denker -- http://marcusdenker.de > >

Dec. 1, 2011