February 2010 - Pharo-dev - lists.pharo.org

[Pharo-project] CeBIT anyone?
by Richard Durr Feb. 28, 2010

Feb. 28, 2010

So will anybody be at the CeBIT? RD

1 0

[Pharo-project] [update 1.1] #11239
by stephane ducasse Feb. 28, 2010

Feb. 28, 2010

11239 ----- - Issue 2026: RecentMessageSet fixes. Tx Pavel :) - Issue 2066: Conversions from/to hex representations in ByteArray (from squeak). Now we can read and print ByteArray in hex with upper and lower case. Stef well a final one (yes noury we arrive now).

1 0

[Pharo-project] How to manage oos dev
by StÃ©phane Ducasse Feb. 28, 2010

Feb. 28, 2010

http://video.google.com/videoplay?docid=-4216011961522818645# The subtitle is misleading How Open Source Projects Survive Poisonous People (And You Can Too) I think that we can learn from them :) The video is much more that about Poisonous people. A lot of interested advices - having vision making sure that people understand it - what are the values of the project - communications (use mails to communicate often) - commit often little code instead of a large chunk - bus factors (encourage people to share they knowledge so cool) - people marking their packages and not letting other sharing. - I like the consensus they promote. - a good one for me :) don't let the emotion drain you :) I can tell you that I'm learning :))))) Stef

1 0

[Pharo-project] [update 1.1] #11238
by StÃ©phane Ducasse Feb. 28, 2010

Feb. 28, 2010

11238 ----- - Issue 2089: Case insensitive search for MethodFinder/MessageNames tx marcus - Issue 2097: SecureHashAlgorithm raising an error upon empty input (from squeak) - Issue 2087: Compacting all methodDictionaries (from squeak) - Cycles cutting tx Jannik Stef (I will be off playing games with kids and noury and luc today....) I will show them magic the gathering Yeahhhh So I will not integrate more today

1 0

[Pharo-project] PhD proposal: Security in Dynamic Languages
by Marcus Denker Feb. 28, 2010

Feb. 28, 2010

(I am reposting this with updated links) The RMoD team at INRIA Lille / France is offering a PhD position. "Reflection and Security in Dynamic Languages". Applications must be submitted online, the deadline is *Mai 4*. More information and online application: http://bit.ly/cbAlE9 More on doing a PhD at INRIA: http://www.inria.fr/travailler/opportunites/doc.en.html ====================================================================== Reflection and Security in Dynamic Languages ============================================ Position type: PhD Student Functional area: Lille (Villeneuve d'Asq) Project: RMOD Environnement ============= To support the creation and evolution of complex systems, dynamic languages provide support for reflection. A reflective system contains a model of itself to enable runtime change: if we change the model, the system changes and vice versa. Reflection allows the programmer to do any kind of change at runtime, even those that render the system useless or breach any kind of security guarantees. Reflection is an established research theme and has seen a lot of work over the last decades. The question of how to control reflection and related that of secure reflective systems in general has not seen much research activity. The PhD Student therefore will work on the question on how to control reflection and work towards enabling systems that are both reflective and secure. Missions ======== The goal of this PhD is to propose a new secure reflective language kernel for dynamic languages. The following points should be explored: - Study existing models of security. - Study existing reflective systems and especially prior work on security and reflection. - Propose a new, secure model of reflection. - Implemented the model in a dynamic, object-oriented language. CompÃ©tences et Profil ===================== - Reflective programming - Smalltalk / C - English Informations complÃ©mentaires ============================ Chercheur(s) Ã contacter pour plus dâinformation/advisors : StÃ©phane Ducasse : stephane.ducasse(a)inria.fr Marcus Denker : marcus.denker(a)inria.fr References ========== [1] Marcus Denker, Tudor GÃ®rba, Adrian Lienhard, Oscar Nierstrasz, Lukas Renggli and Pascal Zumkehr, âEncapsulating and Exploiting Change with Changeboxes,â Proceedings of the 2007 International Conference on Dynamic Languages (ICDL 2007), ACM Digital Library, 2007, pp. 25--49. [2] Oscar Nierstrasz, Alexandre Bergel, Marcus Denker, StÃ©phane Ducasse, Markus Gaelli and Roel Wuyts, âOn the Revival of Dynamic Languages,â Proceedings of Software Composition 2005, Thomas Gschwind and Uwe AÃmann (Eds.), vol. 3628, LNCS 3628, 2005, pp. 1-13 [3] Mark S. Miller and Jonathan S. Shapiro. Paradigm Regained: Abstraction Mechanisms for Access Control. In Proceedings of the Eigth Asian Computing Science Conference, p. 224-242, 2003. [4] Mark Samuel Miller. Robust Composition: Towards a Unified Approach to Access Control and Concurrency Control. Ph.D. thesis, Johns Hopkins University, Baltimore, Maryland, USA, May 2006. -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

1 0

[Pharo-project] PhD proposal: Software re-modularization
by Marcus Denker Feb. 28, 2010

Feb. 28, 2010

(I am reposting this with updated links) The RMoD team at INRIA Lille / France is offering a PhD position. "Software re-modularization". Applications must be submitted online, the deadline is *Mai 4*. More information and online application: http://bit.ly/ajc1N8 More on doing a PhD at INRIA: http://www.inria.fr/travailler/opportunites/doc.en.html ====================================================================== Software re-modularization ========================== Position type: PhD Student Functional area: Lille (Villeneuve d'Asq) Project: RMOD Environnement ============= For organizations, each software system represents a significant investment in time, resources, and knowledge. It is fundamental to keep these systems effective to protect this investment. On the other side, constant evolution of the systems produces an âarchitectural driftâ where the initial architecture no longer fits the necessities of the new requirements. To fight this trend, one must re-architecture the system, which could sometimes be compared to re-engineer a hand made canoe to a full cruise ship while at sea. Research already made good progress, proposing tools that detect the necessity of architecture re-engineering and point at the most urgent needs. These tools work by analyzing class dependencies (e.g., when a class makes a call to a method in another class) and relying on the high cohesion/low coupling principle: A good architecture should ensure that packages have high cohesion (lots of dependencies between their classes) and low coupling with other (few dependencies between classes in one package and classes outside the package). But re-modularization is still a difficult task, for example a lot of solutions may be possible in any specific case, not one with clear advantages over the others. The next research step is therefore to propose tools helping software engineers to actually perform and assess these modularizations. Several paths will be explored, independently or jointly: - Exploration of the space of all possible re-modularization solutions. Visual tools and/or tools based on metrics could help software engineers foresee and understand the costs and consequences of several different re-modularization options so as to help them choose the best one. - Define a quality model to assess different re-modularisations. There is a need to compare multiple solutions of remodularisation actions. - Identification of a catalog of high-level re-modularization operations. Just like modern IDE offer high-level refactoring operations (rename an attribute, move a method), one could identify what high-level operations (for example, cut cycle) would be necessary and sufficient to perform most re-modularization. - Combining these two approaches, one can even imagine a tool that would explore alone the possible options and choose the best(s) one(s) according to some pre-establish quality model. This would somehow be similar to a program that plays chess and explore the space of possible play to choose the most promising one toward a win. Missions ======== The goals of the project are multiple and could be explored independently: - exploring existing high level re-factoring operations; - perform re-modularization so as to identify possibly recurrent high-level operations; - implementing tools to apply these high-level re-modularization operations; - definition of metrics and tools to visualize concurrently different possible re-modularization solutions; - definition of quality and cost models for re-modularization; exploring heuristic to choose the best re-modularization operations to apply in specific cases. CompÃ©tences et Profil ===================== - object-oriented programming with knowledge of Smalltalk - experience in software maintenance and re-factoring - english - good communication Informations complÃ©mentaires ============================ Chercheur(s) Ã contacter pour plus dâinformation/advisors : StÃ©phane Ducasse: stephane.ducasse(a)inria.fr Nicolas Anquetil: nicolas.anquetil(a)inria.fr References =========== [1] S. Ducasse, D. Pollet, M. Suen, H. Abdeen, I. Alloui, âPackage Surface Blueprints: Visually Supporting the Understanding of Package Relationshipsâ, IEEE International Conference on Software Maintenance, 2007. ICSM 2007, IEEE Comp. Soc. Press, pp. 94-103 [2] S. Ducasse, D. Pollet, âSoftware Architecture Reconstruction: a Process-Oriented Taxonomyâ, IEEE Transactions on Software Engineering, IEEE Comp. Soc. Press, 35(4), pp. 573-591, 2009 [3] O. Seng, M. Bauer, M. Biehl, G. Pache, âSearch-based Improvement of Subsystem Decompositionsâ, Proceedings of the 2005 conference on Genetic and evolutionary computation, ACM, pp. 1045 - 1051, 2005 [4] O. Seng, J. Stammel, D. Burkhart, âSearch-Based Determination of Refactorings for Improving the Class Structure of Object-Oriented Systemsâ, Proceedings of the 8th annual conference on Genetic and evolutionary computation, ACM, pp. 1909 â 1916, 2006. [5] J.B. Tran, M.W. Godfrey, E.H.S. Lee, R.C. Holt, âArchitectural Repair of Open Source Softwareâ, 8th International Workshop on Program Comprehension (IWPC'00), IEEE Comp. Soc. Press, p. 48, 2000 -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

1 0

[Pharo-project] Postdoc position: Reflection
by Marcus Denker Feb. 28, 2010

Feb. 28, 2010

(I am reposting this with updated links) The RMoD team at INRIA Lille / France is offering a postdoc position: "Reflection and Scoping in Dynamic Languages". Applications must be submitted online, the deadline is *March 14th*. More information and online application: http://bit.ly/9GYHAx More on Postocs at INRIA: http://www.inria.fr/travailler/opportunites/postdoc/postdoc.en.html Reflection and Scoping in Dynamic Languages =========================================== Position type: Post-doctoral Fellow Functional area: Lille (Villeneuve d'Asq) Project: RMOD ====================================================================== Environnement ============= To support the creation and evolution of complex systems, language need support for reflection and context. A reflective system contains a model of itself for enabling runtime change. Context provides a way to model and react to the context the system is embedded in. Reflection is an established research theme and has seen a lot of work over the last decades. Contextual languages, in contrast are a relatively new direction of research. It has recently gotten popular, with a number of dedicated workshops and a lot of active work going on at the moment. As a new research topic, it poses many open questions. Even fundamental questions, for example, how to model context, are discussed. Missions ======== The following points should be explored: - Study existing models of context. - Model composition of contexts and context reuse. - Explore and Model context propagation - Propose a new, general model of context to support further research on context in reflective systems. The model will be implemented in a dynamic, object-oriented language. - Evaluate contexts as a first class language feature. - Extend the model to provide enhanced reflection on context CompÃ©tences et Profil ===================== Reflective programming - Smalltalk / C - English Informations complÃ©mentaires ============================= Chercheur(s) Ã contacter pour plus dâinformation/advisors : StÃ©phane Ducasse : stephane.ducasse(a)inria.fr Marcus Denker : marcus.denker(a)inria.fr Bibliographical References: ============================ [1] Pascal Costanza and Robert Hirschfeld. Reflective layer activation in ContextL. In SAC â07: Proceedings of the 2007 ACM Symposium on Applied Computing, pages 1280â1285, New York, NY, USA, 2007. ACM Press. [2] Marcus Denker, Mathieu Suen, and StÃ©phane Ducasse. The meta in meta-object architectures. In Proceedings of TOOLS EUROPE 2008, volume 11 of LNBIP, pages 218â237, 2008. [3] Eric Tanter. Contextual values. In Proceedings of the 4th ACM Dynamic Languages Symposium (DLS 2008), Paphos, Cyprus, jul 2008. ACM Press. [4] Eric Tanter. Expressive scoping of dynamically-deployed aspects. In Proceedings of the 7th ACM International Conference on Aspect-Oriented Software Development (AOSD 2008), pages 168â179, Brussels, Belgium, April 2008. ACM Press. [5] Eric Tanter, Kris Gybels, Marcus Denker, and Alexandre Bergel. Context-aware aspects. In Proceedings of the 5th International Symposium on Software Composition (SC 2006), volume 4089 of LNCS, pages 227â242, Vienna, Austria, March 2006. [6] Robert Hirschfeld, Pascal Costanza, and Oscar Nierstrasz. Context-oriented programming. Journal of Object Technology, 7(3), March 2008. [7] Martin von LÃ¶wis, Marcus Denker, and Oscar Nierstrasz. Context-oriented programming: Beyond layers. In Proceedings of the 2007 International Conference on Dynamic Languages (ICDL 2007), pages 143â156. ACM Digital Library, 2007. -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

1 0

[Pharo-project] Postdoc position: Trait-based Language
by Marcus Denker Feb. 28, 2010

Feb. 28, 2010

(I am reposting this with updated links) The RMoD team at INRIA Lille / France is offering a postdoc position: "Designing a pure trait-based language". Applications must be submitted online, the deadline is *March 14th*. More information and online application: http://bit.ly/cGkzn9 More on Postocs at INRIA: http://www.inria.fr/travailler/opportunites/postdoc/postdoc.en.html ====================================================================== Designing a pure trait-based language ===================================== Position type: Post-doctoral Fellow Functional area: Lille (Villeneuve d'Asq) Project: RMOD Environnement ============= Recently, traits have been proposed as a single inheritance backward compatible solution in which the composing entity has the control over the trait composition. Traits are fine-grained units used to compose classes, while avoiding many problems of inheritance and mixin-based approaches. To evaluate the expressiveness of traits, some hierarchies were refactored, showing code reuse. However, such large refactorings, while valuable, may not be facing all the problems, since the hierarchies were previously expressed within single inheritance and following certain patterns. In addition traits have always been considered in addition to class inheritance but not as the main composition and reuse mechanism. Missions ======= We are in the process of designing a pure traits based language. We want to evaluate the impact of having only traits as building blocks and removing inheritance from an object-oriented language. We expect the candidate to take part of the design of a pure traits-based programming language, to perform analysis on large pieces of software for remodularisation purposes and redesign a library. We expect the candidate to implement the core of a pure trait-based language and some representative examples. CompÃ©tences et Profil ==================== - have good skills in interpretation of object-oriented programming languages (classbased, prototypes, mixins...) - have an expertise in object-oriented programming languages outside Java, C++ and C# - be fluent in English Informations complÃ©mentaires ============================= Chercheur(s) Ã contacter pour plus dâinformation/advisors : StÃ©phane Ducasse : stephane.ducasse(a)inria.fr Marcus Denker : marcus.denker(a)inria.fr Bibliographical References: =========================== [1] Alexandre Bergel, StÃ©phane Ducasse, Oscar Nierstrasz and Roel Wuyts, Stateful Traits and their Formalization, Journal of Computer Languages, Systems and Structures, 2008. [2] Damien Cassou, StÃ©phane Ducasse and Roel Wuyts, Redesigning with Traits: the Nile Stream trait-based Library, International Conference on Dynamic Languages 2007, 2007, pp. 50-79. [3] StÃ©phane Ducasse, Oscar Nierstrasz, Nathanael Schaerli, Roel Wuyts and Andrew Black, Traits: A Mechanism for fine-grained Reuse, ACM Transactions on Programming Languages and Systems (TOPLAS), vol. 28, no. 2, March 2006, pp. 331-388. [5] Nathanael Schaerli, StÃ©phane Ducasse, Oscar Nierstrasz and Andrew Black, Traits: Composable Units of Behavior, Proceedings of European Conference on Object-Oriented Programming (ECOOP'03), LNCS, vol. 2743, Springer Verlag, July 2003, pp. 248-274. -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

1 0

Feb. 27, 2010

11237 ----- - Issue 2093: SUnitSpeedUp testSelectors - Issue 2092: Register file after setting name (from CUIS) and a couple of other little tweaks from squeak Stef

1 0

[Pharo-project] polymorph theme with new color for text
by Hilaire Fernandes Feb. 27, 2010

Feb. 27, 2010

Hello, In a custom Polymorph theme I want to use another color them for the menu font, button font,... Really I don't see from where it is themable. Any ideas? Hilaire

2 1