February 2014 - Pharo-users

mathematical models
by Picci Pharo Feb. 13, 2014

Feb. 13, 2014

Hi Guys! I'm going to start to teach as assistant professor of Operative Research, and i'd like to teach some stuff of Pharo. I was wondering if there are some Packages about mathematical models as Lotka-Volterra or other models about the dynamics of biological systems already implemented (with plot too). Thanks for the help.Paolo

1 1

Applications, features and unit tests
by Leonardo Silva Feb. 13, 2014

Feb. 13, 2014

Hi everyone, I am a PhD student at UFMG-Brazil (together with INRIA-France in a project) working with dynamic analysis of software systems' architecture. The idea, initially, is to check the link between dynamic behavior and static structure (architecture) of a system, regarding its features. I am looking for real applications in Smalltalk that have a mapping between its features and the specific unit tests for them. Do you have / know any systems I could use in this research? The tools I am using are Pharo 3.0 with Roassal (for visualization) and Spy (http://www.smalltalkhub.com/#!/~ObjectProfile/Spy) to capture dynamic behavior. Many thanks for help, Leonardo Silva

3 3

Improving Strings Manipulation topic
by Daniela Meneses Feb. 13, 2014

Feb. 13, 2014

Hi to all: I'm Daniela, I'm starting to work on "Improving Strings Manipulation" topic. The idea of this project is to help rethinking the string manipulation API of Pharo. So, from now and on, I will be posting some questions and doubts that I may have. I hope you can help me. Besides If you have suggestions or anything to comment about it, please let me know. -- Thanks in advance , Daniela Meneses

2 1

Re: [Pharo-users] [Pharo-dev] [gsoc-mentors] GSoC: call for ideas
by Camille Teruel Feb. 12, 2014

Feb. 12, 2014

Hello, Here are my proposals, ================================================== Title: Slots, batteries included Context: Pharo has recently introduced a model for first-class class layouts and instance variables (slots). This model will permit to customize the memory layout of instances of a class and the read/write logic of instance variables. However, the current compiler doesn't take the custom read/write logic into account and the implementation need some love. Goal: The student will first have to understand the model of layout and slots (http://rmod.lille.inria.fr/archives/papers/Verw11a-OOSPLA11-FlexibleObjectL…) The next step is to modify the compiler (Opal) so that it take slots into account. Then, the student will improve the current implementation: - Expand the API: Each class should responds to #slots #ownSlots, each object to #slotNamed:set:, #slotNamed:, etc... - Fix the class installer to use the new instance migration model instead of the old one. - Study whether scopes can be removed from the core model or not. - Better definition of the interactions/responsibilities of the class builder and the class installer and fix the problem of modification of anonymous classes. Then the student can provides several examples of custom slots and identify potential clients of these new facilities. Dialect: Pharo Skill level: intermediate Mentors: Camille Teruel / Martin Dias ================================================== Title: Baobab Context: Pharo sources are currently stored in a separated file (.sources). We plan to remove that file and instead store all sources in the image in AST form. But keeping all the ASTs of the system methods would cost too much memory. Bonsai, is one possible solution for saving memory: it is just a flyweight pattern for ASTs. Additionally, we want to annotate the nodes of the ASTs various informations (bindings, additional comments, discussions, false positive critics, debugging code, typing information for various pluggable type systems, statistics like code coverage, etc...). All these annotations would also take too much space in the image. Moreover, not all of them are needed by all developers. Some must be kept in the image, others not. Goal: The goal of Baobab is to offer a flexible AST annotation and serialization system. An annotation should be able to define if it's transient (kept in the image but not serialized with the AST), local (kept in the image and serialized with the AST) or remote (stored on remote repositories so that teams of developers can share and edit them). Dialect: Pharo Skill level: easy/intermediate Mentor: Camille Teruel =================================================== Title: Generic rewriting engine Context: Rewriting is an useful technique that has a lot of applications in many functional programming language. A rewriting engine that can rewrite arbitrary graph of objects would have a lot of useful applications like code refactoring and migration of instances in an alive program. Goal: The goal of this proposal is to implement a rewriting engine for arbitrary tree/graph of object. A rewriting rule must be able to define: - Patterns to match a part of the graph possibly including metavariables (variables that match subparts of the matched part) - Transformation of the matched part using the metavariables The engine is parametrized with a set of rules an a traversal of the graph (look at http://www.humane-assessment.com/blog/traversal-enabled-pharo-objects for ideas). Inspirations can be found in the pattern-matching library of Newspeak: (http://www.hpi.uni-potsdam.de/hirschfeld/publications/media/GellerHirschfel…) Skill level: intermediate Dialect: Free Mentor: Camille Teruel =================================================== Title: Object based IDE Context: An object oriented program is based on objects that send messages to other objects. However, source code and IDE shows only classes and methods. There is a huge gap between the source code that the IDEs show and the runtime entities of a program: object and messages. This gap make program comprehension difficult because it is up to the programmer to fill this gap in is head. That is certainly the reason why many Smalltalk programmers like to program in the debugger: they deal with an actual instance of their program. Goal: The goal of this proposal is to set up the first bricks toward a graphical IDE centered around objects that are alive during a program execution. The first step is to provide a view to easily navigate through a graph of objects. Then objects should be able to customize their view and several default views for common classes must be provided: Array, Dictionary, Set, etc... The final step is to be able to run a program step by step as in a debugger and display the messages sent between objects using Granovetter diagrams. Dialect: any Skill level: intermediate Mentor: Camille Teruel

1 0

branching with monticello
by sergio_101 Feb. 12, 2014

Feb. 12, 2014

i am sort of foggy on how to effectively use branching with monticello. currently, we use branches daily. we branch off the master, and give it some name "like update_user_functions".. we develop away on that, and when it's time, we merge that back into master, and push out to the server. having named branches makes it very easy for us track what's going on in the development line. is this possible with monticello, or am i just missing an ideology? thanks! -- ---- peace, sergio photographer, journalist, visionary #BitMessage BM-2D8VWUJSS41RFKh1ec83preVabHrnniExa http://www.ThoseOptimizeGuys.com http://www.CodingForHire.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

6 7

smalltalkhub.com -> commits history
by sergio t. ruiz Feb. 12, 2014

Feb. 12, 2014

i have a few projects i am playing with smalltalkhub on, but i am not sure if i am doing it right.. if i look under commits, i see no commit history, but under source, i can see about 35 different versions of the source i have committed. any ideas? thanks! -- ---- peace, sergio photographer, journalist, visionary #BitMessage BM-2D8VWUJSS41RFKh1ec83preVabHrnniExa http://www.ThoseOptimizeGuys.com http://www.CodingForHire.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

3 2

[ANN] ScriptManager 1.7 Release for upcoming Pharo 3.0
by Torsten Bergmann Feb. 11, 2014

Feb. 11, 2014

Thanks to Sven van Caekenberghe the ScriptManager tool hosted in project http://smalltalkhub.com/#!/~TorstenBergmann/ScriptManager/ now also provides the ability to import/export not only to a single binary fuel file but also to a folder with readable scripts. This is a good idea and may also help to use external editors or versioning systems like git or others on the custom scripts. I also reworked the menues to be in alignment with the common style and polished the package for Pharo 3.0 as a new release version 1.7. Just open the config browser in Pharo 3.0 and load "ScriptManager". After loading it will be available under Tools -> ScriptManager. Have fun T.

2 1

Xs&Os game
by ÐÐ°ÑÐºÑÑÐ½ Ð ÑÐ·ÑÐ½ Feb. 11, 2014

Feb. 11, 2014

Hello, everyone! I'm working on Xs&Os game (or tic tac toe) to learn pharo. Already uploaded a first version. Game is boring and very simple, but if somebody is interested here is a link: http://smalltalkhub.com/#!/~MarkRizun/XsAndOsGame/ As a novice in pharo, waiting for comments and advice. Ð¡ritique is welcome too ;) Regards, Mark.

6 23

Using/editing external packages..
by sergio_101 Feb. 11, 2014

Feb. 11, 2014

i am currenty develop an app in seaside, and am wondering about best practices when using external packages. in my case, i am using a copy of TF-Login that i updated to work in pharo 2. The main class in that package is RegisteredUser. as is true in most cases, i will be tweaking this object a great deal. this package also contains a great deal of renderers that will be tweaked. so, my question is: how should i go about this? should i take RegisteredUser and sublcass it? this might requried me to change other code in the package? should i subclass the renders and override their methods? should i just go ahead and edit the TF-Login package directly? my initial thought was to edit the package direclty, but i am not sure what would happen if the package is externally updated. thoughts? ideas? -- ---- peace, sergio photographer, journalist, visionary #BitMessage BM-2D8VWUJSS41RFKh1ec83preVabHrnniExa http://www.ThoseOptimizeGuys.com http://www.CodingForHire.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

2 2

Re: [Pharo-users] [gsoc-mentors] GSoC: call for ideas
by Dennis Schetinin Feb. 11, 2014

Feb. 11, 2014

- (*Intermediate*) *Amber* - *Pharo* interaction via WebSocket. Specifically, Pharo as IDE for Amber -- as continuation of http://gsoc2013.esug.org/projects/amber-tools and http://gsoc2012.esug.org/projects/mmi-amber. Use new tools (Glamorous Toolkit, for example). - (*Advanced*) Boundless and zoomable interfaces with *Pharo*. Continuation of http://gsoc2012.esug.org/projects/esse using Athens [ https://code.google.com/p/pharo/wiki/Athens] This can be further development of the Esse presentation framework, or creating some development tools for Pharo. - (*Intermediate*) Implementation of "Object Semantic Networks" as a new knowledge-representation engine to be used inside *Pharo* (for various purposes). This task can include development of web interface for the system using *Amber*. Please, contact me directly for details. Dennis Schetinin email: chaetal(a)gmail.com skype: dennis.schetinin -- Best regards, Dennis Schetinin 2014-02-11 13:42 GMT+04:00 Damien Cassou <damien.cassou(a)gmail.com>: > Hi fellow Pharo hackers, > > ESUG, the European Smalltalk User Group, is applying for this > year's Google Summer of Code. As you probably know, the Summer > of Code provides the opportunity to fund students to work during > the summer on Pharo. Please reply to this > email (be sure to use "Reply to all") if you have ideas you > would like to propose. > > Please include a summary of the project and links to web pages > that can help prospective students to write their application. > Please also include the following information: > > - if applicable, other dialects that you would be willing to > mentor this project for > > - the skill level > > - name of the mentor(s), email addresses, and possibly any IRC > network/channel/nickname where they can be found. > > Thanks for contributing to ESUG's Summer of Code application! > > -- > Damien Cassou > http://damiencassou.seasidehosting.st > > "Success is the ability to go from one failure to another without > losing enthusiasm." > Winston Churchill > > -- > You received this message because you are subscribed to the Google Groups > "Smalltalk GSoC mentors" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to smalltalk-gsoc-mentors+unsubscribe(a)googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. >

1 0