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[Pharo-project] Curly Braces history (was Re: A comparative article)

by Bert Freudenberg

On 10.05.2012, at 13:25, H. Hirzel wrote: > On 5/10/12, Levente Uzonyi <leves(a)elte.hu> wrote: >> So it's not about dynamic arrays, but arrays created with the brace >> syntax. And yes, that was introduced in Squeak. > > Any idea when and for which reason? Dan Ingalls, 1997: "Larry Tesler added the Curly Brace construct to Apple Smalltalk back around 1985, and there it sat in Apple's APDA (Apple Programmer and Developer Association) Smalltalk release for about a decade. Then we resurrected that image as the basis of Squeak, and I've never bothered to tear it out." More at http://www.cc.gatech.edu/fac/mark.guzdial/squeak/notes/curlybraces.html - Bert -

May 10, 2012

Re: [Pharo-project] on Raspberry Pi

by H. Hirzel

On 5/10/12, Pavel Krivanek <pavel.krivanek(a)gmail.com> wrote: > Hi, > > one my friend got Raspberry Pi yesterday so I have seen it in action. > I had almost no time for experiments but I have seen Fedora 17 on it > with standard Squeak (3.10) packages for this distro on FullHD > display. On that VM (3.10.5) I got about 40M bytecodes/sec and 1M > sends/sec. The environment is not extra fast but usable without > problems. I will pray for successful GSoC ARM JIT project :-) The > device was connected to the professional meter and the power > consumption was about 3.5W. > > Cheers, > -- Pavel > > Amazing, a 256MB RAM machine with a main board which includes everything for 35USD. Some five to seven years ago one would not have believed that this is possible. And thanks to the open source movement providing software for it is possible..... Thank you for this short report. --Hannes

May 10, 2012

[Pharo-project] [update 2.0] #20064

by Marcus Denker

20064 ----- Issue 5838: Error: Could not access http://www.squeaksource.com/MetaRepoForPharo20 http://code.google.com/p/pharo/issues/detail?id=5838 Issue 5806: Add an encrypted mode on PluggableTextFieldMorph http://code.google.com/p/pharo/issues/detail?id=5806 Issue 5712: Do the Icons need attribution? http://code.google.com/p/pharo/issues/detail?id=5712 -- Marcus Denker -- http://marcusdenker.de

May 10, 2012

Re: [Pharo-project] [squeak-dev] Re: A comparative article (was STON - Smalltalk Object Notation)

by H. Hirzel

On 5/10/12, Levente Uzonyi <leves(a)elte.hu> wrote: > On Thu, 10 May 2012, H. Hirzel wrote: > >> Hello >> >> A question about dynamic arrays >> >> Goran writes that he thinks they were introduced in Squeak? > > GÃ¶ran wrote: > "It is simply a dynamic {} array (was introduced originally in Squeak I > believe) > but with the assumption that the expressions all evaluate to Associations > that are limited to a string as key." > > So it's not about dynamic arrays, but arrays created with the brace > syntax. And yes, that was introduced in Squeak. Any idea when and for which reason? Where are they used these days? Which other Smalltalk dialects have adopted it? > > Btw OrderedCollections are dynamic arrays. > > > Levente > >> Is this correct? If yes when? References? >> Which other Smalltalk dialects do have them? >> >> Regards >> Hannes >> >> >> On 5/8/12, Janko MivÅ¡ek <janko.mivsek(a)eranova.si> wrote: >> [...snip] >>> >>> Dne 08. 05. 2012 09:55, piÅ¡e GÃ¶ran Krampe: >>>> Hi guys! >>>> >>>> I just posted an article about JSON/STON/Literal arrays/Tirade - and it >>>> is probably easiest to read at planet.smalltalk.org (my blog has a >>>> rather bad theme I realized): >>>> >>>> http://planet.smalltalk.org >>>> >>>> ...or at my blog: >>>> >>>> http://goran.krampe.se/2012/05/08/literal-arrays-vs-json-vs-ston-vs-tirade >>>> >>>> Sven - sorry for beating down a bit on STON in that article, nothing >>>> personal and I love all the stuff you have done, I just have a hard >>>> time >>>> placing STON in my toolbox. If you can give me good arguments why I am >>>> dead wrong - please do! ;) >>>> >>>> And regarding Tirade, feel free to criticize that too of course, it is >>>> still not set in stone and all input is appreciated, including telling >>>> me it sucks :). >>>> >>>> The most interesting bit of the article is perhaps my thoughts on >>>> literals in Smalltalk - would be nice to hear what people thiná¸±. And >>>> oh, >>>> sorry for the length of the article - it kinda swelled. >>>> >>>> regards, GÃ¶ran >> >>

May 10, 2012

Re: [Pharo-project] Strangest object ever seen?

by Nicolas Cellier

I can remember that several times on Squeak I had cases of double Metaclass pointing to the same class unless it was the contrary (two clases having sale Metaclass ?). Chasing pointers never helped me. So this may be an evil manifestation of an old bug. I sent this mail on 2010 dec 29 about 'Behavior deepCopy smells' http://lists.squeakfoundation.org/pipermail/squeak-dev/2010-December/156019… And this one on 2010 april 10 about 'PseudoContext strange behavior' http://lists.squeakfoundation.org/pipermail/squeak-dev/2010-April/147987.ht… Nicolas 2012/5/10 Mariano Martinez Peck <marianopeck(a)gmail.com>: > > > On Wed, May 9, 2012 at 3:31 PM, Herby VojÄÃk <herby(a)mailbox.sk> wrote: >> >> The cause of the problem is probably in this: if you try to inspect >> dzindzik, VM prints out something like "Directory does not have index: 7". >> If you try dzindzik instVarAt:1, dzindzik instVarAt:2, ... in a row, you get >> 6, but there is not 7. >> > This is related to the instVar 'layout' that was added to Behavior. If you > analyze dzindzik, its correct. I mean, the order in its instVars are > correct. Its problem is "thisClass". As you could notice, you could not > inspect thisClass because you get an error with the "Directory does not have > index: 7". > So, go to SystemWindows and change this method to: > > SystemWindow >> #labelled: labelString > Â Â Â ^self new setLabel: 'caca' > > What we do is to be able to open the inspector while avoiding to ask for its > class for the label (since it is broken). Now you are able to inspect > thisClass. > When you inspect this class, you will see that the first instVars > (superclass, methodDict and format) are all correct. 'layout' is nil and > from there, all instVars are shifted one slot. The instvar instanceVariables > have a classOrganizer. The instVar subclasses has the name, etc... > > so... thisClass subclasses -> #Object > > Of course, you cannot inspect the last instVar 'localSelectors' because you > are going out of the scope ;) > > In summary it looks like dzindzik is anoher Metaclass of Object, say Object > class (whose instVars are correct), and dzindzik class is Object but with > broken (shifted) instVars. > > That's all we could fine so far with Guille :) > > >> >> So dzindzik's class thinks it has (at least) seven inst vars, but in fact >> in does only have six. >> >> Herby >> > > > > -- > Mariano > http://marianopeck.wordpress.com >

May 10, 2012

Re: [Pharo-project] [squeak-dev] Re: A comparative article (was STON - Smalltalk Object Notation)

by GÃ¶ran Krampe

Hi! On 05/10/2012 12:14 PM, Levente Uzonyi wrote: >> Hello >> >> A question about dynamic arrays >> >> Goran writes that he thinks they were introduced in Squeak? > > GÃ¶ran wrote: > "It is simply a dynamic {} array (was introduced originally in Squeak I > believe) but with the assumption that the expressions all evaluate to > Associations that are limited to a string as key." > > So it's not about dynamic arrays, but arrays created with the brace > syntax. And yes, that was introduced in Squeak. > > Btw OrderedCollections are dynamic arrays. Sorry for the slightly confusing nomenclature ;) regards, GÃ¶ran

May 10, 2012

Re: [Pharo-project] [squeak-dev] Re: A comparative article (was STON - Smalltalk Object Notation)

by Levente Uzonyi

On Thu, 10 May 2012, H. Hirzel wrote: > Hello > > A question about dynamic arrays > > Goran writes that he thinks they were introduced in Squeak? GÃ¶ran wrote: "It is simply a dynamic {} array (was introduced originally in Squeak I believe) but with the assumption that the expressions all evaluate to Associations that are limited to a string as key." So it's not about dynamic arrays, but arrays created with the brace syntax. And yes, that was introduced in Squeak. Btw OrderedCollections are dynamic arrays. Levente > Is this correct? If yes when? References? > Which other Smalltalk dialects do have them? > > Regards > Hannes > > > On 5/8/12, Janko MivÅ¡ek <janko.mivsek(a)eranova.si> wrote: > [...snip] >> >> Dne 08. 05. 2012 09:55, piÅ¡e GÃ¶ran Krampe: >>> Hi guys! >>> >>> I just posted an article about JSON/STON/Literal arrays/Tirade - and it >>> is probably easiest to read at planet.smalltalk.org (my blog has a >>> rather bad theme I realized): >>> >>> http://planet.smalltalk.org >>> >>> ...or at my blog: >>> >>> http://goran.krampe.se/2012/05/08/literal-arrays-vs-json-vs-ston-vs-tirade >>> >>> Sven - sorry for beating down a bit on STON in that article, nothing >>> personal and I love all the stuff you have done, I just have a hard time >>> placing STON in my toolbox. If you can give me good arguments why I am >>> dead wrong - please do! ;) >>> >>> And regarding Tirade, feel free to criticize that too of course, it is >>> still not set in stone and all input is appreciated, including telling >>> me it sucks :). >>> >>> The most interesting bit of the article is perhaps my thoughts on >>> literals in Smalltalk - would be nice to hear what people thiná¸±. And oh, >>> sorry for the length of the article - it kinda swelled. >>> >>> regards, GÃ¶ran > >

May 10, 2012

Re: [Pharo-project] on Raspberry Pi

by Pavel Krivanek

On Thu, May 10, 2012 at 11:31 AM, Marcus Denker <marcus.denker(a)inria.fr> wrote: > > On May 10, 2012, at 11:29 AM, Pavel Krivanek wrote: > >> Hi, >> >> one my friend got Raspberry Pi yesterday so I have seen it in action. >> I had almost no time for experiments but I have seen Fedora 17 on it >> with standard Squeak (3.10) packages for this distro on FullHD >> display. On that VM (3.10.5) I got about 40M bytecodes/sec and 1M >> sends/sec. The environment is not extra fast but usable without >> problems. I will pray for successful GSoC ARM JIT project :-) The >> device was connected to the professional meter and the power >> consumption was about 3.5W. >> > Very nice! > > As soon as we get one we will put it as a build target for Jenkins... > (sadly even though I got up early that day I am not yet even invited > to pre-order...). > > Â Â Â Â Marcus I will try to borrow it on PharoConf :-) -- Pavel > > > -- > Marcus Denker -- http://marcusdenker.de > >

May 10, 2012

Re: [Pharo-project] on Raspberry Pi

by Marcus Denker

On May 10, 2012, at 11:29 AM, Pavel Krivanek wrote: > Hi, > > one my friend got Raspberry Pi yesterday so I have seen it in action. > I had almost no time for experiments but I have seen Fedora 17 on it > with standard Squeak (3.10) packages for this distro on FullHD > display. On that VM (3.10.5) I got about 40M bytecodes/sec and 1M > sends/sec. The environment is not extra fast but usable without > problems. I will pray for successful GSoC ARM JIT project :-) The > device was connected to the professional meter and the power > consumption was about 3.5W. > Very nice! As soon as we get one we will put it as a build target for Jenkins... (sadly even though I got up early that day I am not yet even invited to pre-order...). Marcus -- Marcus Denker -- http://marcusdenker.de

May 10, 2012

Re: [Pharo-project] Fwd: Do you know any candidates for assistant positions in our department

by phil＠highoctane.be

Funny, I am 10km away and fits the requirements :-) I ned more cash to run the house than you offer but still, let's keep in touch. Phil http://philippeback.eu 2012/5/10 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > > > Begin forwarded message: > > *From: *Kim Mens <Kim.Mens(a)uclouvain.be> > *Subject: **Do you know any candidates for assistant positions in our > department* > *Date: *May 10, 2012 10:28:45 AM GMT+02:00 > *To: *researchers RELEASED <released(a)listes.uclouvain.be> > > Dear all, > > I am urgently looking for possible candidates to fill up some teaching and > research assistants in our department. Such an assistant typically has > teaching and research duties and gets up to 6 years to obtain a PhD (to be > renewed every 2 years). The 6 years is because of the extra teaching load > as compared to a normal researchers. Regarding research, they get to choose > what professor they want to do research with and negotiate the research > topic with him; evidently I'm open to have them under my guidance, but the > choice is up to them. Regarding teaching, the teaching charges are > distributed equally among the different assistants based on their > capacities and interests. The positions are very interesting, and they get > a real contract and fair salary (as compared to some other countries). A > university level degree of master in computer science or computing science > engineering (or something equivalent) is a must. (For foreigners, > equivalence of their diploma will need to be verified but that can be done > afterwards I think.) Knowledge of French is strongly desired because the > bachelor years are still taught in French and we are already quite short on > French-speaking researchers to help out with teaching duties in the > bachelor years. Knowledge of English is also positive since our Master > years are taught in English. Anyway, if you would know anyone, please pass > them this information. *The deadline is very short* since all forms need > to be filled in and submitted electronically by *May 18*, which would > mean they need to start working on it right now. A internal selection > commission of professors from our department will select the three best > candidates from all those who applied. > > More instructions on how to apply can be found here : > http://www.uclouvain.be/11617.html > The candidate needs to fill out the digital form that is available there. > If they click on "Listes des postes vacants" they will see the different > vacancies currently available for the entire university. The ones related > to our department can be found under the faculty "Ecole Polytechnique de > Louvain" and more specifically the vacancies with identification > numbers 00001941, 00002203, en 00004257. > You will see that 2 of these 3 have a description that is particularly > dedicated to computer science. The third one looks more general, but in > fact it has been decided recently that it will also go to computer science, > but we weren't able to change the description anymore. Interested > candidates should thus fill in the form and are strongly advised to apply > to each of the 3 positions, even though they can receive only one. (I agree > the procedure is a bit absurd, but what did you expect, this is Belgium.) > > Of course you can always contact me for more information or if the > procedure is not 100% clear (even though I also had to look all of this up > on the official university webpage). > > That's it for now... > > Thanks for your attention to this mail. > > Prof. Kim Mens > UniversitÃ© catholique de Louvain (UCL) > Institute of Information & Communication Technologies, Electronics and > Applied Mathematics (ICTEAM) > IngÃ©nierie Informatique (INGI) > Place Sainte Barbe 2, B-1348 Louvain-la-Neuve, Belgique > kim.mens(a)uclouvain.be > > > > > -- Philippe Back "Helping you hit the top 3 outcomes you really want to achieve" Mob: +32(0) 478 650 140 | Fax: +32 (0) 70 408 027 Mail: phil(a)highoctane.be| Web: http://philippeback.eu | Blog: http://philippeback.be High Octane SPRL rue cour Boisacq 101 1301 Bierges

May 10, 2012