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Re: [Pharo-project] The video about Athens

by Marcus Denker

On Apr 21, 2012, at 3:04 AM, Bernardo Ezequiel Contreras wrote: > Finally, i could heard it. Download original file (MOV) and use Windows/VLC but the video has two audio(stereo) tracks so you have to select the one with the sound, the other one is in silence. > Ok, that is the reason... we will updat the posted movie monday. -- Marcus Denker -- http://marcusdenker.de

April 21, 2012

Re: [Pharo-project] [update 2.0] #20006

by Marcus Denker

On Apr 21, 2012, at 10:19 AM, StÃ©phane Ducasse wrote: > > On Apr 20, 2012, at 9:51 PM, Sven Van Caekenberghe wrote: > >> >> On 20 Apr 2012, at 21:45, StÃ©phane Ducasse wrote: >> >>> we went to euratechnology where INRIA has a show room. >>> http://www.euratechnologies.com/ >>> >>> the building is gorgeous. This was EU money well spent because >>> it will change completely this part of the city. they are renovating the complete area. >> >> Looks very nice ! >> >> And that is where the Pharo conference takes place ? > > no :) > We will do it at INRIA because this is our place and cheaper. But there will be FOSA organized this winter there. http://fossa.inria.fr/ -- Marcus Denker -- http://marcusdenker.de

April 21, 2012

Re: [Pharo-project] [update 2.0] #20006

by StÃ©phane Ducasse

On Apr 20, 2012, at 9:51 PM, Sven Van Caekenberghe wrote: > > On 20 Apr 2012, at 21:45, StÃ©phane Ducasse wrote: > >> we went to euratechnology where INRIA has a show room. >> http://www.euratechnologies.com/ >> >> the building is gorgeous. This was EU money well spent because >> it will change completely this part of the city. they are renovating the complete area. > > Looks very nice ! > > And that is where the Pharo conference takes place ? no :) We will do it at INRIA because this is our place and cheaper. But there will be FOSA organized this winter there. > > ;-) > > >

April 21, 2012

Re: [Pharo-project] Show categoy in implementors, senders.. etc

by StÃ©phane Ducasse

so we want both :) On Apr 20, 2012, at 9:43 PM, Mariano Martinez Peck wrote: > > > On Fri, Apr 20, 2012 at 9:41 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > Yes > yes originally we wanted to have the package name but it was too slow now with RPackage it should get fast enough. > On Apr 20, 2012, at 5:48 PM, Mariano Martinez Peck wrote: > > > Hi Ben. I really miss the ability of seing the category in senders/implementors. Lots of time I want to see for example if all implementation or senders are in the correct package or not, etc... > > > > Sorry stef when I said " Lots of time I want to see for example if all implementation or senders are in the correct package or not, etc..." > I wanted to mean category rather than package. (but sometimes the category means a package when you use * hahaha) > > > > > So, together with Guille, waiting for the train, we hacked: > > > > FlatMessageListBrowser >> createColumnsFor: anItem > > > > ^ bindings > > at: anItem > > ifAbsentPut: [ {anItem realClass name. anItem selector asString, ' (' ,anItem category asString, ')'} ] > > > > Not sure if that's the place, but it would be nice to have :) > > > > Thanks > > > > -- > > Mariano > > http://marianopeck.wordpress.com > > > > > > > > -- > Mariano > http://marianopeck.wordpress.com >

April 21, 2012

Re: [Pharo-project] strange logic

by StÃ©phane Ducasse

2840 in mine for 4 icons O_o And of course doing a lot of bad string comparisonsâ¦.. Stef On Apr 21, 2012, at 12:05 AM, Alain Rastoul wrote: > Bringing up the World menu ends up with more than 1000 'icon' messages in > the Transcript > 8-o > > > "StÃ©phane Ducasse" <stephane.ducasse(a)inria.fr> a Ã©crit > dans le message de news: BAF0C354-2FD4-4AD0-B24E-EABE17ADE36D(a)inria.fr... > Hi > > I added a simple transcript into the following method. > > icon > "Answer the receiver's icon. Handle legacy case > of wording-based mechanism." > > |state| > Transcript show: 'icon'; cr. > ^^^^^^^^^^^^^^^^^^^^^^ > self getStateSelector ifNil: [^super icon]. > state := (MessageSend receiver: self target selector: self getStateSelector) > valueWithEnoughArguments: self arguments . > (state = true or: [state isString and: [(state beginsWith: '<yes>') or: > [state beginsWith: '<on>']]]) > ifTrue: [^self onIcon]. > (state = false or: [state isString and: [(state beginsWith: '<no>') or: > [state beginsWith: '<off>']]]) > ifTrue: [^self offIcon]. > ^super icon > > Then I brought up the monticello menu which has 4 toggleMenus and I got a > lot and a lot and a lot > of processing in the transcript > > It looks to me that there is a wrong logic in the system > Stef > > > >

April 21, 2012

Re: [Pharo-project] Nautilus

by StÃ©phane Ducasse

> Right clic on the class name, Refactoring> Class refactoring > Generate > accessors . > I guess it is what you are looking for (though I didn't do it yet). > > Nautilus is really a cool browser , congrats Benjamin :-) > I especially like the Group view , very useful yes I tried to push david to implement that in O2 but it did not work. Now I was saying that the next extra hyper cool feature of nautilus would be to have context (so that we can keep a method under edition and jump to another one or that we can have a context = reading methods x in package y and jumping to read method k in group z :). But first let us finish RPackage integration :( > Having a chasing senders/implementors browser like the refactoring browser > have would be top. > Having the annotation line telling in wich changeset the method is would be > cool too. use the plugins it is there :) > > Each Pharo release gets better . > > "blake" <dsblakewatson(a)gmail.com> a Ã©crit dans > le message de news: > CAJAnwP=CpXEJo4t8qY3L2Z8=n-FkeDCosAVxjKeS8wtBNwdrFA(a)mail.gmail.com... >> Is there any documentation on Nautilus anywhere? >> >> I was trying to get it to create getters and setters but I don't see >> if it does that. Also, there are these tantalizing letters on the side >> (S, B, D, I, C) and sometimes a yellow band appears on the >> right--which I guess is a warning about length, but what are the >> numbers? >> >> Also, the category pane is now the package pane, and given my >> confusion about the relationship between those, it'd be good to know >> how Nautilus is different. >> >> ===Blake=== >> >> > > > >

April 21, 2012

Re: [Pharo-project] Block questions

by StÃ©phane Ducasse

Thanks eliot I'm refreshing my fuzzy understanding of closure implementation details (I would love to avoid to have students, kids, bosses and â¦ around to get some calm time :). I will start rereading your blog. > tempAt: in Method context uses <primitive: 210>, which is failing. Maybe there is a new primitive we are not aware of for Blocks... > > No, 210 is what is needed. The issue is my implementation of temporary initialization in blocks, which simply uses pushNil to allocate and initialize each temp. So if one inspects [|a|a:=2] and sends it self method symbolic you get: > > 13 <8F 00 00 05> closureNumCopied: 0 numArgs: 0 bytes 17 to 21 > 17 <73> pushConstant: nil > 18 <77> pushConstant: 2 > 19 <81 40> storeIntoTemp: 0 > 21 <7D> blockReturn > 22 <7C> returnTop > > And when you say self asContext pc you get 17, which is *before* the nil is pushed. So you'll want to modify tempNamed: to compare the index of the temporary with the stack pointer and answer nil if the index is beyond the stack pointer. Is it correct? I think so but I'm learning ContextPart tempNamed: aName "Returns the value of the temporaries, aName." "Implementation notes: temporary initialization in blocks simply uses pushNil to allocate and initialize each temp. So if one inspects [|a|a:=2] and sends it self method symbolic you get: 13 <8F 00 00 05> closureNumCopied: 0 numArgs: 0 bytes 17 to 21 17 <73> pushConstant: nil 18 <77> pushConstant: 2 19 <81 40> storeIntoTemp: 0 21 <7D> blockReturn 22 <7C> returnTop And when we check self asContext pc we get 17, which is *before* the nil is pushed. Therefore we should pay attention when querying a temporary if the temporary allocation was executed." | index | index := (self tempNames indexOf: aName). ^ index >= stackp ifTrue: [ nil] ifFalse: [self tempAt: (self tempNames indexOf: aName)] > > The same bug exists in Squeak, e.g. the below gave an error until I fixed DebuggerMethodMap>>namedTempAt:in: I checked and this method is the same in pharo and latest squeak namedTempAt: index in: aContext "Answer the value of the temp at index in aContext where index is relative to the array of temp names answered by tempNamesForContext:" ^self privateTempAt: index in: aContext startpcsToBlockExtents: aContext method startpcsToBlockExtents > | b | > b := [ |a| a:=2 ]. > { b asContext tempNames. b method debuggerMap tempsAndValuesForContext: b asContext } > #(#('b' 'a') 'b: [closure] in UndefinedObject>>DoIt > a: nil > ') > > > Why did I use pushNil to allocate temps? It was not a good choice; it means for example that to determine how many temps a block has one has to parse all the bytecodes and see where the stack pointer is at the end (since initial pushNils are ambiguous; an initial pushNil might be producing a parameter or result or initializing a temp). But not using pushNil would have meant a more complex bytecode for closure creation plus another inst var in BlockClosure. I made another similar misstep in not storing the method in a BlockClosure, hence preventing simple implementation of clean blocks (one needs to synthesize an outerContext also). We live and learn. Do you mean that the closure cannot access directly method but should do go to its outer context to access the methods. When this is needed to set the instruction pointer? Another thoughts while writing the chapter on block execution.. Am I correct to say: we need contexts (to me contexts are activation objects by opposition to bindings which could be used to represent scope) to query local temps of a closure because they will be allocated at execution while the temporaries that are shared are defined in their defining environment (now the trick is that in Smalltalk environment is represented as a context). I get why I'm often slow because I did not implemented closure in Smalltalk only in lisp foo |b| b := 3. ^ [ |a | a :=2. a] In my stupid lisp implementation an environment is represented by bindings and closure points to their own environment so [ |a | a :=2. a] points to (b.3) (toplevel) (and not top-level) and for closure execution we just added temporaly a binding for a to the closure environment. eval a:=2. a in (a) (b.3) (toplevel)

April 21, 2012

Re: [Pharo-project] [ANN] Physical Etoys 2.0 released!

by StÃ©phane Ducasse

ricardo I would love to play with ardino. Do you have a suggestion for a useful configuration in terms of board, motorsâ¦? Because there are a lot of choices and I do not know what to buy. Stef On Apr 21, 2012, at 12:00 AM, Ricardo Moran wrote: > Hi everybody (and sorry if you receive multiple copies), > > I would like to announce a new version of Physical Etoys, now with a lot of new features: > â¢ First of all, it's based on Etoys 5.0 so it incorporates all the bug-fixes and new features from the Etoys release. > â¢ We are now focusing on the two main hardware platforms: Arduino and Lego Mindstorms Nxt. For the rest, we will publish a set of "external modules" that you can install in your Physical Etoys version. > â¢ Also, we now support an argentinian version of Arduino, which is called DuinoBot and it's currently being used in a lot of argentinian schools. > â¢ We added new devices for arduino and now we also support the use of digital devices attached to analog pins. > â¢ We added two new objects that let you graph the input of a variable across time and save it to a csv file. > â¢ We added a new programming mode that lets you compile your scripts and have them running inside the robot, in contrast to running them in the computer and communicate with the robot via bluetooth or usb. We believe this opens a lot of new posibilities for the Physical Etoys users. > â¢ And finally, we fixed a lot of bugs that make the software a lot more stable (or so we hope :). > I would like to use this opportunity to publicly thank all the people from the Etoys community for their work on Etoys 5, this latest version is much better than the last and I encourage you all to try it. > And also, I would like to announce that Physical Etoys 2.0 is going to be installed by default on all the laptops of the "Conectar igualdad" program, which is kind of like the argentinian version of OLPC (but for older students). So we are *really* excited about this! > > Now that you're all as excited as we are :) you can download and try Physical Etoys 2.0 from our blog: http://tecnodacta.com.ar/gira/projects/physical-etoys/. > > Cheers, > Richo

April 21, 2012

Re: [Pharo-project] [squeak-dev] [ANN] Physical Etoys 2.0 released!

by GermÃ¡n Arduino

Wow! Felicitaciones queda muy chico para uds!!! Y si que se puede!! Congrats by your fantastic job! 2012/4/20, Ricardo Moran <richi.moran(a)gmail.com>: > Hi everybody (and sorry if you receive multiple copies), > > I would like to announce a new version of Physical Etoys, now with a lot of > new features: > > 1. First of all, it's based on Etoys 5.0 so it incorporates all the > bug-fixes and new features from the Etoys release. > 2. We are now focusing on the two main hardware platforms: Arduino and > Lego Mindstorms Nxt. For the rest, we will publish a set of "external > modules" that you can install in your Physical Etoys version. > 3. Also, we now support an argentinian version of Arduino, which is > called DuinoBot and it's currently being used in a lot of argentinian > schools. > 4. We added new devices for arduino and now we also support the use of > digital devices attached to analog pins. > 5. We added two new objects that let you graph the input of a variable > across time and save it to a csv file. > 6. We added a new programming mode that lets you compile your scripts > and have them running inside the robot, in contrast to running them in > the > computer and communicate with the robot via bluetooth or usb. We believe > this opens a lot of new posibilities for the Physical Etoys users. > 7. And finally, we fixed a lot of bugs that make the software a lot more > stable (or so we hope :). > > I would like to use this opportunity to publicly thank all the people from > the Etoys community for their work on Etoys 5, this latest version is much > better than the last and I encourage you all to try it. > And also, I would like to announce that Physical Etoys 2.0 is going to be > installed by default on all the laptops of the "Conectar igualdad" program, > which is kind of like the argentinian version of OLPC (but for older > students). So we are *really* excited about this! > > Now that you're all as excited as we are :) you can download and try > Physical Etoys 2.0 from our blog: > http://tecnodacta.com.ar/gira/projects/physical-etoys/. > > Cheers, > Richo > -- Enviado desde mi dispositivo mÃ³vil ============================================ GermÃ¡n S. Arduino <gsa @ arsol.net> Twitter: garduino Arduino Software http://www.arduinosoftware.com PasswordsPro http://www.passwordspro.com greensecure.blogspot.com germanarduino.blogpost.com ============================================

April 21, 2012

Re: [Pharo-project] The video about Athens

by Bernardo Ezequiel Contreras

Finally, i could heard it. Download original file (MOV) and use Windows/VLC but the video has two audio(stereo) tracks so you have to select the one with the sound, the other one is in silence. On Fri, Apr 20, 2012 at 7:57 PM, Mark Smith <mark.smith(a)objectbynature.com>wrote: > +1 for the descriptive names. > > Too often I see strange contractions that aren't immediately obvious, and > or otherwise inconsistent naming (not just in Smalltalk), and it ruins the > illusion of having a consistent whole :). > > It bugs me a little ;). > > It would be really cool if we could agree as a community to follow a > well-defined naming scheme. > > I'm rather fond of this book â > > Smalltalk With Style<http://stephane.ducasse.free.fr/FreeBooks/WithStyle/SmalltalkWithStyle.pdf> > > Any thoughts? > > Mark > > > On 20 Apr 2012, at 08:47, Igor Stasenko wrote: > > On 19 April 2012 18:27, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > It's so great stuff!!! :)) > > > Is cairo used as athens backend for this demo? > > Is it should work with Bitblt backend? > > > In demo I see many usage of angel parameter for transformations. Do you > > think about "angel unit objects" like "90 degrees" or "2 radians" instead > of > > raw numbers ? > > > there are two methods - rotateByRadians: and rotateByDegrees: > It makes things more explicit, while if i just have > rotate: or rotateBy:, then it will be a bit ambiguous, whether > argument angle is in radians or degrees > (different frameworks assuming different things to be default) > > How #scaledBy: works with Point argument (self extend) and Float like > (frame > > / 100 sin abs) at the same time? What' logic? > > > for uniform scale, you provide a sole number, and for non-uniform - a > point, > with x and y scale factors separately. > There is a scaleX:Y: method, while scaleBy: is more for convenience. > > Best regards, > > Denis > > > > 2012/4/19 Igor Stasenko <siguctua(a)gmail.com> > > > Hello, all > > > I recorded a small introductory video about Athens. > > Here it is: > > > http://vimeo.com/40653315 > > > (about 21 minutes). > > > I explain some basic stuff like drawing things using Athens canvas, > > building paths, use of transformation matrices etc. > > > Please note, this is a first video i ever recorded in such context in > > my life, so don't be too harsh :) > > Also, note that the animations are jagged because of video recording > > frame rate, not because it is that slow in reality. > > > There are still a blog post pending about it.. which i plan to finish > > when i will finish ;) > > > -- > > Best regards, > > Igor Stasenko. > > > > > > > -- > Best regards, > Igor Stasenko. > > >

April 21, 2012