August 2011 - Pharo-users - lists.pharo.org

Re: [Pharo-users] [Esug-list] Smalltalk lecture Saturday 20th of August at ESUG

by StÃ©phane Ducasse

I do not think so. Nothing was prepared for that, now you can get the slides (some version on my lecture web pages). Stef On Aug 15, 2011, at 4:49 PM, HwaJongOh wrote: > can i watch this via internet? > > Best Regards > HwaJogn Oh > > 2011. 8. 14., ì ë 5:13, StÃ©phane Ducasse ìì±: > >> Hi Friends please distribute that widely >> >> >> I will give a free lecture >> >> >> Discovering Smalltalk >> >> Smalltalk is a pure and elegant object language. This lectures will cover the fundamental aspects of Smalltalk: >> syntax, semantics, and key aspects of the system. Doing so we will also revise the real semantics of self/super. >> We will show the power of polymorphism in action by simply learning from the system. Finally we will go into >> more design aspect again based on the systems. As a bonus we will start the lecture with a 15 min presentation >> of Seaside a powerful web framework for dynamic web application. >> >> This lecture may be followed by a lecture on more advanced object-oriented design: >> law of demeter, encapsulation, multiple interface of classes, composition vs. inheritance >> >> Starting time: 9h30 >> Closing: 16h00 >> >> Location: http://www.esug.org/wiki/pier/Conferences/2011/The-Venue-in-Edinburgh >> >> >> >> Bio: He is expert in object-oriented language design, dynamic languages, reflective programming, language semantics as well as reengineering, program analysis, >> visualizations, software metrics. Recently he worked on traits, composable method groups, and this work got some impact. Traits have been introduced AmbiantTalk, >> Pharo, Perl-6, PHP 5.4 and Squeak. They influenced Scala and Fortress SUN Microsystems. Stephane is one of the developer of Pharo (http://www.pharo.project.org/) >> an open-source language inspired by Smalltalk. He is one of the core developer of Moose, an open-source reengineering environment (http://moose.unibe.ch/) >> He is the president of the European Smalltalk User Group and organize a yearly international conference on Smalltalk. He wrote a couple of fun books to teach >> programming and other serious topics such as dynamic web development (http://book.seaside.st) >> >> Stef >> >> _______________________________________________ >> Esug-list mailing list >> Esug-list(a)lists.esug.org >> http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org > > > _______________________________________________ > Esug-list mailing list > Esug-list(a)lists.esug.org > http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org

Aug. 15, 2011

Re: [Pharo-users] [Esug-list] Smalltalk lecture Saturday 20th of August at ESUG

by HwaJongOh

can i watch this via internet? Best Regards HwaJogn Oh 2011. 8. 14., ì ë 5:13, StÃ©phane Ducasse ìì±: > Hi Friends please distribute that widely > > > I will give a free lecture > > > Discovering Smalltalk > > Smalltalk is a pure and elegant object language. This lectures will cover the fundamental aspects of Smalltalk: > syntax, semantics, and key aspects of the system. Doing so we will also revise the real semantics of self/super. > We will show the power of polymorphism in action by simply learning from the system. Finally we will go into > more design aspect again based on the systems. As a bonus we will start the lecture with a 15 min presentation > of Seaside a powerful web framework for dynamic web application. > > This lecture may be followed by a lecture on more advanced object-oriented design: > law of demeter, encapsulation, multiple interface of classes, composition vs. inheritance > > Starting time: 9h30 > Closing: 16h00 > > Location: http://www.esug.org/wiki/pier/Conferences/2011/The-Venue-in-Edinburgh > > > > Bio: He is expert in object-oriented language design, dynamic languages, reflective programming, language semantics as well as reengineering, program analysis, > visualizations, software metrics. Recently he worked on traits, composable method groups, and this work got some impact. Traits have been introduced AmbiantTalk, > Pharo, Perl-6, PHP 5.4 and Squeak. They influenced Scala and Fortress SUN Microsystems. Stephane is one of the developer of Pharo (http://www.pharo.project.org/) > an open-source language inspired by Smalltalk. He is one of the core developer of Moose, an open-source reengineering environment (http://moose.unibe.ch/) > He is the president of the European Smalltalk User Group and organize a yearly international conference on Smalltalk. He wrote a couple of fun books to teach > programming and other serious topics such as dynamic web development (http://book.seaside.st) > > Stef > > _______________________________________________ > Esug-list mailing list > Esug-list(a)lists.esug.org > http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org

Aug. 15, 2011

cascaded update of objects with Glorp

by Alain Rastoul

Hi, I am trying to update a composite object in a database with Glorp. I have a Customer object with a reference to an Address object. In my seaside app, I have a ListView that calls a CustomerEditView when I click on a customer. with: edit: aCustomer | response | response := self call: (self editor new model: aCustomer copy). response ifNotNil: [ self session database update: aCustomer with: response]. (database is a is a facade to the Glorp system, and update: anObject with: anotherObject perform the variable instance assignments of an object to another in a glorp unit of work). when I click on Cancel button in my CustomerEditView, the address is modified in the list with what has been typed in the form. (a shallow copy points to the same Address object) so I tryed: ... model: anObject deepCopy ... And I have a DuplicatePrimaryKeyException in Glorp when I click on the save button, because Glorp don't want to have two different objects with the same primary key - that makes sense. Do anyone know a way to do this in Glorp without updating each field of the linked object (in the final model, I will have 3 addresses), ie, doing the update cascade in a simple way. I am thinking about implementing an updateFrom: anotherObject or copyTo: anotherObject in my Customer and Address objects but it does not fit right with basic types (String, integers etc) and I am sure someone had the same problem before me. Any idea, comments or suggestions are welcome Thanks in advance, Cheers, Alain

Aug. 14, 2011

Re: [Pharo-users] Web sockets in Zinc

by Andy Burnett

Thanks guys I will try swazoo. However, I was hoping Zinc would support it because it would give us a very light weight method of producing real-time apps on eg iPads. Cheers Andy

Aug. 14, 2011

Re: [Pharo-users] Web sockets in Zinc

by Sven Van Caekenberghe

Andy, On 14 Aug 2011, at 00:21, Andy Burnett wrote: > Does Zinc support the web socket protocol? No. > Or, is it likely to in the near future? It would be a useful addition, I guess. But I am not so sure it is a common protocol already. Sven

Aug. 14, 2011

Smalltalk lecture Saturday 20th of August at ESUG

by StÃ©phane Ducasse

Hi Friends please distribute that widely I will give a free lecture Discovering Smalltalk Smalltalk is a pure and elegant object language. This lectures will cover the fundamental aspects of Smalltalk: syntax, semantics, and key aspects of the system. Doing so we will also revise the real semantics of self/super. We will show the power of polymorphism in action by simply learning from the system. Finally we will go into more design aspect again based on the systems. As a bonus we will start the lecture with a 15 min presentation of Seaside a powerful web framework for dynamic web application. This lecture may be followed by a lecture on more advanced object-oriented design: law of demeter, encapsulation, multiple interface of classes, composition vs. inheritance Starting time: 9h30 Closing: 16h00 Location: http://www.esug.org/wiki/pier/Conferences/2011/The-Venue-in-Edinburgh Bio: He is expert in object-oriented language design, dynamic languages, reflective programming, language semantics as well as reengineering, program analysis, visualizations, software metrics. Recently he worked on traits, composable method groups, and this work got some impact. Traits have been introduced AmbiantTalk, Pharo, Perl-6, PHP 5.4 and Squeak. They influenced Scala and Fortress SUN Microsystems. Stephane is one of the developer of Pharo (http://www.pharo.project.org/) an open-source language inspired by Smalltalk. He is one of the core developer of Moose, an open-source reengineering environment (http://moose.unibe.ch/) He is the president of the European Smalltalk User Group and organize a yearly international conference on Smalltalk. He wrote a couple of fun books to teach programming and other serious topics such as dynamic web development (http://book.seaside.st) Stef

Aug. 14, 2011

Re: [Pharo-users] Web sockets in Zinc

by Davorin Rusevljan

On Sun, Aug 14, 2011 at 12:21 AM, Andy Burnett <andy.burnett(a)knowinnovation.com> wrote: > Does Zinc support the web socket protocol? Or, is it likely to in the > near future? it is not Zinc, but Swazoo has support for websockets, if that can help. Davorin Rusevljan http://www.cloud208.com/

Aug. 14, 2011

Web sockets in Zinc

by Andy Burnett

Does Zinc support the web socket protocol? Or, is it likely to in the near future? Cheers Andy

Aug. 13, 2011

Re: [Pharo-users] First Steps

by Mariano Martinez Peck

Hi. I don't have time right now to check your code, but just to let you know another implementation of BTree that you can look at: http://www.squeaksource.com/BTree On Sat, Aug 13, 2011 at 3:59 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > > On Aug 13, 2011, at 3:56 PM, Jonathan Kelly wrote: > > > Hi, > > > > well, I think I'm starting to get the object thing. I coded up the > beginnings of a BTree package .. and I think I'm sold on Smalltalk - I > really love the debugger!! > > Welcome > What I like is that smalltalk helps me to think about design and objects > > > If anyone has 5 minutes to kill having a look and give some feedback, I'd > appreciate it. > > > > It's in squeaksource - I think I set it up so anyone can see it ... let > me know if it isn't (and how to make it visible too! :) > > > > It only has an add function so far (and the page search is only linear - > I'll get to that). > > > > useage > > x := BTree withOrder: 2. > > x add: 11. > > > > MCHttpRepository > > location: 'http://www.squeaksource.com/JKTesting' > > user: '' > > password: '' > > > Jonathan I do not know if you wrote tests but if you don't: tests are the > best kata to improve your design. > Read the SUnit chapter I wrote in Pharo by example and do it :) > > > > > Thanks > > Jonathan. > > > > > -- Mariano http://marianopeck.wordpress.com

Aug. 13, 2011

Re: [Pharo-users] First Steps

by StÃ©phane Ducasse

On Aug 13, 2011, at 3:56 PM, Jonathan Kelly wrote: > Hi, > > well, I think I'm starting to get the object thing. I coded up the beginnings of a BTree package .. and I think I'm sold on Smalltalk - I really love the debugger!! Welcome What I like is that smalltalk helps me to think about design and objects > If anyone has 5 minutes to kill having a look and give some feedback, I'd appreciate it. > > It's in squeaksource - I think I set it up so anyone can see it ... let me know if it isn't (and how to make it visible too! :) > > It only has an add function so far (and the page search is only linear - I'll get to that). > > useage > x := BTree withOrder: 2. > x add: 11. > > MCHttpRepository > location: 'http://www.squeaksource.com/JKTesting' > user: '' > password: '' Jonathan I do not know if you wrote tests but if you don't: tests are the best kata to improve your design. Read the SUnit chapter I wrote in Pharo by example and do it :) > > Thanks > Jonathan. >

Aug. 13, 2011