April 2017 - Pharo-users - lists.pharo.org

Re: [Pharo-users] In the quest of Smacc idioms

by Thierry Goubier

Le 01/04/2017 Ã 19:31, Stephane Ducasse a Ã©crit : > Hi > > I'm trying to understand what are the idioms in Smacc when converting from > ANTLR > > ######### the case of * ######################## > Function = â(â (',' Arguments )* â)â Function: "(" ( Argument ("," Argument) * ) ? ")" {{}} ; Argument: <identifier> 'argument' ; This one in SmaCC github, gives you exactly what you want (a Function ast node with an instance variable named arguments containing a possibly empty list of arguments) and is equivalent to your transform below. Even more concise; one can put the instance variable name in the top-level expression, and SmaCC will infer the list behavior: Function: "(" (Expression 'argument' ("," Expression 'argument')*)? {{}} ; > should be transformed into > > Function > : <name> "(" 'leftParen' _ArgumentsOption ")" 'rightParen' {{}} > ; > _ArgumentsOption > : > | Arguments > ; > Arguments > : Expression 'argument' > | Arguments "," Expression 'argument' > ; > > Here since there is a recursion in Arguments > the instance variable containing a list of argument will be added to the > FunctionNode > Pay attention that Expression 'argument' should not have a {{}} nor its > parent rule. > > > ######### the case of + ######################## > Function = â(â Arguments + â)â Function: "(" Argument 'argument' ("," Argument 'argument') * ")"; Argument: <identifier> ; > should be transformed into > > Function > : <name> "(" 'leftParen' _ArgumentsOption ")" 'rightParen' {{}} > ; > _ArgumentsOption > : Arguments > ; > Arguments > : Expression 'argument' > | Arguments "," Expression 'argument' > ; > > > > ######### the case of ? ######################## > Function = â(â Arguments+ â)â Function = '(' Arguments? ')', that is: Function: "(" (Arguments 'argument') ? ")"; You need the parenthesis here. This is a bug, it should accept Function: "(" Arguments 'argument' ? ")" ; I'll add an issue and improve the SmaCC grammar grammar. > > should be transformed into > > Function > : <name> "(" 'leftParen' _ArgumentsOption ")" 'rightParen' {{}} > ; > _ArgumentsOption > : > | Arguments > ; > Arguments > : Expression 'argument' > ; > > > > Is there a more compact way to express? With +, *, ? and () of course :) > Thierry do you have example of *, + , ? in the grammar? No, not that many. I did not use them much professionally, and then I didn't make the effort to check that the AST annotations would work correctly with them, so I had a tendancy to remove them. This is the first time I'm really checking that annotations work properly over those syntax extensions. The initial (1.X) version of thoses annotations were not compatibles with the AST annotations, so I had back then to hack the SmaCC 2.0.3 base to support them, without having the time to check it was done properly on the annotation level. Thierry > Stef

April 1, 2017

GSoC Proposal - Improve Code Completion

by Nahuel Garbezza

Hi everyone! I'm trying to apply to GSoC and I have a proposal about Code completion. I would like to share with you: https://docs.google.com/document/d/1R8zAq415UCqtn3AoAcRGDSQFZ_5QgL88nQu6R7g… I know you guys have a lot of ideas around code completion, so any kind of feedback is appreciated. Thanks! Nahuel

April 1, 2017

Breaking News -- HPE to Open Smalltalk Billion Dollar project in 2018

by mldavis＠chaparralwest.com

Sorry to be skeptical, but as much as I admire Richard Eng's work, since it is April 1st (which is April Fool's Day in the U.S.) I am a bit skeptical of this story. :>{ I hope it's true but .. mike

April 1, 2017

Re: [Pharo-users] Smacc debugger

by Thierry Goubier

Le 31/03/2017 Ã 21:46, Stephane Ducasse a Ã©crit : > Hi thierry > > Where can I find a documentation of +, * ? in the grammar (and > especially how to manage the production)? formally, +, *, ? do behave as they are defined in BNF extensions. They are compiled by generating itermediate productions, as one does when it converts by hand: you can see the itermediate non-terminals generated if you look at the items and symbols of the compiled parser. > And indeed they do not work in the Moose version. They were probably introduced by lr in the 1.x series of SmaCC for Squeak. > I think that if +, *, ?, ( ) are working in the grammar it is an > important addition to Smacc. Because I found it right now verbose > compare to ANTLR Yes but the combination of AST annotations and those syntax extensions needs to be checked, and maybe adjusted, and I haven't done that yet. Thierry > Stef > > On Wed, Mar 29, 2017 at 7:19 PM, Thierry Goubier > <thierry.goubier(a)gmail.com <mailto:thierry.goubier@gmail.com>> wrote: > > > > 2017-03-29 18:21 GMT+02:00 Stephane Ducasse <stepharo.self(a)gmail.com > <mailto:stepharo.self@gmail.com>>: > > So I browsed the mailing-list and I foind the mail of thierry > saying that there is no difference. > I will try to tools in moose then. > > > Probably: the +, *, ?, ( ) in the grammar don't work anymore. As I > told you: very few differences. > > > On Wed, Mar 29, 2017 at 6:07 PM, Stephane Ducasse > <stepharo.self(a)gmail.com <mailto:stepharo.self@gmail.com>> wrote: > > Ok I should say that I do not understand the differences and > why there are two versions of Smacc. > So I will stop maintaining the tutorial because now may be I > should revert what I wrote. > I was too stupid to do it in fact I should focus on my stuff > and nothing else. > This saddens me a lot. > We are a small community and we split ourselves into little > chunks. > I do not get why there is no notion of economy and sharing > in our culture. > > > Thierry > > > > Stef > > > > On Wed, Mar 29, 2017 at 2:30 PM, Tudor Girba > <tudor(a)tudorgirba.com <mailto:tudor@tudorgirba.com>> wrote: > > Hi, > > > On Mar 28, 2017, at 11:50 AM, Stephane Ducasse <stepharo.self(a)gmail.com > <mailto:stepharo.self@gmail.com>> wrote: > > > > OK > > I loaded Smacc from github as mentioned by thierry. > > > > Metacello new > > baseline: 'SmaCC'; > > repository: 'github://ThierryGoubier/SmaCC'; > > load > > > > Are there two configurationOfSmacc? > > May be we should only have one no? > > > > I have the impression that even thierry and jason working heavily with Smacc do not know that. > > And we should not force them to use Moose. At least we do not have to win > > anything with it. > > I did not mean to force anyone to use Moose. I just said > it is already loaded there, in case you use it. > > Moose relies on the ConfigurationOfSmaCC maintained by > John. Thierry has another repository that he created > before John moved his work to Pharo. But, now that he > does work with Pharo Moose relies on his version. > > Cheers, > Doru > > > > > Stef > > > > On Mon, Mar 27, 2017 at 6:31 PM, Tudor Girba <tudor(a)tudorgirba.com <mailto:tudor@tudorgirba.com>> wrote: > > They come with the ConfigurationOfSmaCC which is already in the Moose image. > > > > Doru > > > > > > > On Mar 27, 2017, at 4:52 PM, Stephane Ducasse <stepharo.self(a)gmail.com > <mailto:stepharo.self@gmail.com>> wrote: > > > > > > Hi > > > > > > where can I load the Smacc gt extension and debugger extensions? > > > > > > Stef > > > > -- > > www.tudorgirba.com <http://www.tudorgirba.com> > > www.feenk.com <http://www.feenk.com> > > > > "Speaking louder won't make the point worthier." > > > > > > > > -- > www.tudorgirba.com <http://www.tudorgirba.com> > www.feenk.com <http://www.feenk.com> > > "There are no old things, there are only old ways of > looking at them." > > > > > > > > >

April 1, 2017

Re: [Pharo-users] Breaking News

by Offray Vladimir Luna CÃ¡rdenas

Well... I was just trying to get myself unembarrassed... but was not catch was not mine... next years I will let it run wildly and help to it. Cheers, Offray On 01/04/17 12:32, Ben Coman wrote: > Too quick Offray :) Shoulda let it run... > cheers -ben > > On Sun, Apr 2, 2017 at 1:28 AM, Offray Vladimir Luna CÃ¡rdenas > <offray.luna(a)mutabit.com <mailto:offray.luna@mutabit.com>> wrote: > > Ohhh... April 1st.... (the local date for that is Dec 28th, so it > always kind of confuse me). > > Cheers, > > Offray > > > > On 01/04/17 12:22, Offray Vladimir Luna CÃ¡rdenas wrote: > > Hi, > > Thanks for sharing. There is any link to the HPE site on the > news about investing 1.2 billion in the R & D Research Lab? > > Cheers, > > Offray > > > On 01/04/17 11:10, horrido wrote: > > Smalltalk to get a second crack at the whip > <https://medium.com/@richardeng/smalltalk-to-get-a-second-crack-at-the-whip-… > <https://medium.com/@richardeng/smalltalk-to-get-a-second-crack-at-the-whip-…>> > > . By frickin' time! > > > > -- > View this message in context: > http://forum.world.st/Breaking-News-tp4940893.html > <http://forum.world.st/Breaking-News-tp4940893.html> > Sent from the Pharo Smalltalk Users mailing list archive > at Nabble.com. > > > > > > > >

April 1, 2017

Re: [Pharo-users] How childrenBlock: in TreeModel works

by Ð¥ÑÐ¸ÑÑÐ¸Ð½Ð° ÐÐ¸ÑÐ°Ð¹Ð»ÑÐº

Now I understand. Thank you very much! =) 2017-04-01 17:48 GMT+03:00 Peter Uhnak <i.uhnak(a)gmail.com>: > Hi, > > I wanted to point you to the new Spec book ( http://files.pharo.org/books- > pdfs/spec/2017-01-23-SpecBooklet.pdf ), but apprently it's not there. > > Many Spec widgets have examples accompanying them, so always check class > side (not for all though). For TreeModel you can see couple there - good > for playing around; e.g. > > exampleWithNoSpecifiedNodes > "self exampleWithNoSpecifiedNodes" > TreeModel new > roots: (1 to: 5); > childrenBlock: [ :item | 1+item to: 5+item ]; > openWithSpec > > You specify the initial data (root nodes) via the `roots:` message. > The `childrenBlock:` then specifies how one would retrieve data given a > particular node; note that this applies to _any node_, not just the root > ones; so you can have potentially infinitely deep trees. > > A more complex example could be this (this is awful code for demonstration > only ;): > > TreeModel new > roots: {#parent. #childless. 20. #root -> #(a b c)}; > childrenBlock: [ :item | > item isSymbol ifTrue: [ > item = #parent > ifTrue: [ #(child1 child2) ] > ifFalse: [ #() ] > ] ifFalse: [ > item isNumber > ifTrue: [ {item + 2. item ** 2} ] > ifFalse: [ "association" item value ] > ] > ]; > openWithSpec > > > Peter > > On Sat, Apr 01, 2017 at 06:49:41AM -0700, chrismihaylyk wrote: > > Hi! > > > > Could anyone explain me how works childrenBlock: method from TreeModel? > > step-by-step. > > What data it operates? How makes a result? > > > > Thanks a lot? Khrystyna. > > > > > > > > > > > > -- > > View this message in context: http://forum.world.st/How- > childrenBlock-in-TreeModel-works-tp4940884.html > > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > > >

April 1, 2017

Re: [Pharo-users] Breaking News

by Ben Coman

Too quick Offray :) Shoulda let it run... cheers -ben On Sun, Apr 2, 2017 at 1:28 AM, Offray Vladimir Luna CÃ¡rdenas < offray.luna(a)mutabit.com> wrote: > Ohhh... April 1st.... (the local date for that is Dec 28th, so it always > kind of confuse me). > > Cheers, > > Offray > > > > On 01/04/17 12:22, Offray Vladimir Luna CÃ¡rdenas wrote: > >> Hi, >> >> Thanks for sharing. There is any link to the HPE site on the news about >> investing 1.2 billion in the R & D Research Lab? >> >> Cheers, >> >> Offray >> >> >> On 01/04/17 11:10, horrido wrote: >> >>> Smalltalk to get a second crack at the whip >>> <https://medium.com/@richardeng/smalltalk-to-get-a-second- >>> crack-at-the-whip-ecaeb8a94533> >>> . By frickin' time! >>> >>> >>> >>> -- >>> View this message in context: http://forum.world.st/Breaking >>> -News-tp4940893.html >>> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >>> >>> >>> >> >> >> > >

April 1, 2017

In the quest of Smacc idioms

by Stephane Ducasse

Hi I'm trying to understand what are the idioms in Smacc when converting from ANTLR ######### the case of * ######################## Function = â(â (',' Arguments )* â)â should be transformed into Function : <name> "(" 'leftParen' _ArgumentsOption ")" 'rightParen' {{}} ; _ArgumentsOption : | Arguments ; Arguments : Expression 'argument' | Arguments "," Expression 'argument' ; Here since there is a recursion in Arguments the instance variable containing a list of argument will be added to the FunctionNode Pay attention that Expression 'argument' should not have a {{}} nor its parent rule. ######### the case of + ######################## Function = â(â Arguments + â)â should be transformed into Function : <name> "(" 'leftParen' _ArgumentsOption ")" 'rightParen' {{}} ; _ArgumentsOption : Arguments ; Arguments : Expression 'argument' | Arguments "," Expression 'argument' ; ######### the case of ? ######################## Function = â(â Arguments+ â)â should be transformed into Function : <name> "(" 'leftParen' _ArgumentsOption ")" 'rightParen' {{}} ; _ArgumentsOption : | Arguments ; Arguments : Expression 'argument' ; Is there a more compact way to express? Thierry do you have example of *, + , ? in the grammar? Stef

April 1, 2017

Re: [Pharo-users] Breaking News

by Ben Coman

On Sun, Apr 2, 2017 at 12:10 AM, horrido <horrido.hobbies(a)gmail.com> wrote: > Smalltalk to get a second crack at the whip > <https://medium.com/@richardeng/smalltalk-to-get-a- > second-crack-at-the-whip-ecaeb8a94533> > . By frickin' time! > > Lovely article Richard. I want to believe this is really a turning point for Smalltalk. cheers -ben

April 1, 2017

Re: [Pharo-users] Breaking News

by Offray Vladimir Luna CÃ¡rdenas

Ohhh... April 1st.... (the local date for that is Dec 28th, so it always kind of confuse me). Cheers, Offray On 01/04/17 12:22, Offray Vladimir Luna CÃ¡rdenas wrote: > Hi, > > Thanks for sharing. There is any link to the HPE site on the news > about investing 1.2 billion in the R & D Research Lab? > > Cheers, > > Offray > > > On 01/04/17 11:10, horrido wrote: >> Smalltalk to get a second crack at the whip >> <https://medium.com/@richardeng/smalltalk-to-get-a-second-crack-at-the-whip-…> >> >> . By frickin' time! >> >> >> >> -- >> View this message in context: >> http://forum.world.st/Breaking-News-tp4940893.html >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >> > > >

April 1, 2017

Re: [Pharo-users] Breaking News

by Offray Vladimir Luna CÃ¡rdenas

Hi, Thanks for sharing. There is any link to the HPE site on the news about investing 1.2 billion in the R & D Research Lab? Cheers, Offray On 01/04/17 11:10, horrido wrote: > Smalltalk to get a second crack at the whip > <https://medium.com/@richardeng/smalltalk-to-get-a-second-crack-at-the-whip-…> > . By frickin' time! > > > > -- > View this message in context: http://forum.world.st/Breaking-News-tp4940893.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

April 1, 2017

Breaking News

by horrido

Smalltalk to get a second crack at the whip <https://medium.com/@richardeng/smalltalk-to-get-a-second-crack-at-the-whip-…> . By frickin' time! -- View this message in context: http://forum.world.st/Breaking-News-tp4940893.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 1, 2017

Re: [Pharo-users] Morphic component to display images/pictures

by Stephane Ducasse

Cool (for the interpreter refactoring). Let us know when you have something. I thought that you wanted to display an image. On Sat, Apr 1, 2017 at 11:44 AM, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > The mooc challenge (no #4) doesn't really address any of the things I am > interested in (the result is the same as what inspector can currently do). > > Spec has ImageModel, but that doesn't even have scrollbars... > > anyway... I am currently refactoring Spec interpreter and after that I > would like to improve some things... so maybe I could improve the > ImageModel, since we don't have what I want... > > Peter > > > On Sat, Apr 01, 2017 at 09:58:26AM +0200, Hilaire wrote: > > Just by curiosity: can it be done with Spec ? > > > > Hilaire > > > > Le 31/03/2017 Ã 08:16, Stephane Ducasse a Ã©crit : > > > have a look at the solution of the challenge 2 or 3 in the mooc :) > > > > > > > -- > > Dr. Geo > > http://drgeo.eu > > > > > >

April 1, 2017

Smalltalk/Java job in france

by Stephane Ducasse

*From: *Babel <contact(a)babel.coop> *Subject: **Offre d'emploi profil double compÃ©tence Smalltalk/Java* *Date: *21 February 2017 at 21:31:26 GMT+1 *To: *smalltalk-fr(a)googlegroups.com *Reply-To: *smalltalk-fr(a)googlegroups.com Nous proposons Ã un profil concepteur-dÃ©veloppeur Smalltalk/Java de rejoindre une Ã©quipe dÃ©diÃ©e "socle technique", dans le cadre de travaux de maintenance corrective et Ã©volutive, pour une mission longue. CompÃ©tences attendues : - expÃ©rience significative en Smalltalk - expÃ©rience significative en Java - autonomie - sens de l'Ã©quipe Lieu : Poitou-Charentes DisponibilitÃ© : immÃ©diate L'offre est ouverte Ã tous, freelance ou non : la personne aura la possibilitÃ© de rejoindre si elle le souhaite une coopÃ©rative d'entrepreneurs. Pour plus d'informations, contactez-nous rapidement : contact arob babel.coop -- View this message in context: http://forum.world.st/Offre-d-emploi-profil-double-competence-Smalltalk-Jav… Sent from the FranÃ§ais (French) mailing list archive at Nabble.com <http://nabble.com/>.

April 1, 2017

Re: [Pharo-users] How childrenBlock: in TreeModel works

by Peter Uhnak

Hi, I wanted to point you to the new Spec book ( http://files.pharo.org/books-pdfs/spec/2017-01-23-SpecBooklet.pdf ), but apprently it's not there. Many Spec widgets have examples accompanying them, so always check class side (not for all though). For TreeModel you can see couple there - good for playing around; e.g. exampleWithNoSpecifiedNodes "self exampleWithNoSpecifiedNodes" TreeModel new roots: (1 to: 5); childrenBlock: [ :item | 1+item to: 5+item ]; openWithSpec You specify the initial data (root nodes) via the `roots:` message. The `childrenBlock:` then specifies how one would retrieve data given a particular node; note that this applies to _any node_, not just the root ones; so you can have potentially infinitely deep trees. A more complex example could be this (this is awful code for demonstration only ;): TreeModel new roots: {#parent. #childless. 20. #root -> #(a b c)}; childrenBlock: [ :item | item isSymbol ifTrue: [ item = #parent ifTrue: [ #(child1 child2) ] ifFalse: [ #() ] ] ifFalse: [ item isNumber ifTrue: [ {item + 2. item ** 2} ] ifFalse: [ "association" item value ] ] ]; openWithSpec Peter On Sat, Apr 01, 2017 at 06:49:41AM -0700, chrismihaylyk wrote: > Hi! > > Could anyone explain me how works childrenBlock: method from TreeModel? > step-by-step. > What data it operates? How makes a result? > > Thanks a lot? Khrystyna. > > > > > > -- > View this message in context: http://forum.world.st/How-childrenBlock-in-TreeModel-works-tp4940884.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

April 1, 2017

How childrenBlock: in TreeModel works

by chrismihaylyk

Hi! Could anyone explain me how works childrenBlock: method from TreeModel? step-by-step. What data it operates? How makes a result? Thanks a lot? Khrystyna. -- View this message in context: http://forum.world.st/How-childrenBlock-in-TreeModel-works-tp4940884.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 1, 2017

Re: [Pharo-users] Morphic component to display images/pictures

by Peter Uhnak

The mooc challenge (no #4) doesn't really address any of the things I am interested in (the result is the same as what inspector can currently do). Spec has ImageModel, but that doesn't even have scrollbars... anyway... I am currently refactoring Spec interpreter and after that I would like to improve some things... so maybe I could improve the ImageModel, since we don't have what I want... Peter On Sat, Apr 01, 2017 at 09:58:26AM +0200, Hilaire wrote: > Just by curiosity: can it be done with Spec ? > > Hilaire > > Le 31/03/2017 Ã 08:16, Stephane Ducasse a Ã©crit : > > have a look at the solution of the challenge 2 or 3 in the mooc :) > > > > -- > Dr. Geo > http://drgeo.eu > >

April 1, 2017

Re: [Pharo-users] Morphic component to display images/pictures

by Hilaire

Just by curiosity: can it be done with Spec ? Hilaire Le 31/03/2017 Ã 08:16, Stephane Ducasse a Ã©crit : > have a look at the solution of the challenge 2 or 3 in the mooc :) > -- Dr. Geo http://drgeo.eu

April 1, 2017

Re: [Pharo-users] Voyage, DateAndTime and UTC

by Hilaire

Based on the Paul suggestion, one can write a description to get DateAndTime right. Hopefully this could be fixed in Voyage Hilarie mongoAccesstime <mongoDescription> ^ VOToOneDescription new attributeName: 'accessTime'; accessor: (MAPluggableAccessor read: [:userClient| userClient accessTime printString] write: [:userClient :string | userClient accessTime: (DateAndTime fromString: string)]); yourself Le 31/03/2017 Ã 21:06, Hilaire a Ã©crit : > Thanks for the idea. > For me it is a bug[2], like the other one related to Date persistency, > saved as DateAndTime, then shifting you one day[1]. -- Dr. Geo http://drgeo.eu

April 1, 2017

Re: [Pharo-users] type checking in Smalltalk

by Ben Coman

On Sat, Apr 1, 2017 at 2:34 AM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > > On 31 Mar 2017, at 19:38, Dimitris Chloupis <kilon.alios(a)gmail.com> > wrote: > > > > > > On Fri, 31 Mar 2017 at 19:13, Sven Van Caekenberghe <sven(a)stfx.eu> > wrote: > > if you copy/paste something you should give a reference > > > > > > I did not copy paste anything, 100 % mine. What part you think it's copy > ? > > Ah, sorry then, the formatting seemed to suggest it came from somewhere > else. > > BTW, I don't think the hybrid part is a real thing. > > Although I understand that static typed languages like C, C++, Java and so > many others have their place and use, people in those languages spend an > awful amount of time and code dealing with the types they love so much. The > modern static languages with all their magic are even worse. And even in a > nice static typed program that compiles with no warnings, there are still > dynamic errors lurking everywhere. The world cannot be defined in a static > way. > > The dynamic type errors that you get in Pharo during development are 95% > plain logic errors, once you fix those and write some unit tests, a Pharo > program is just as stable and reliable as anything else that is well > written, tested and debugged. > > And I love Igor's "Don't ask, tell" idea - right on target. > This would make a good name for a book on OO. cheers -ben > > Anyway, that is my personal opinion, I don't want to convince you. > > Sven >

April 1, 2017