Squeak
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This document summarizes the Squeak programming environment. It discusses Squeak's history stemming from Alan Kay's Dynabook vision and its development at Xerox PARC as Smalltalk. Key features of Squeak include being a prototyping environment based on Smalltalk with multimedia capabilities. The document outlines several projects built using Squeak such as Sophie, Croquet, and Seaside. It argues Squeak is useful for research due to its reflective capabilities and being easy to modify, enabling rapid prototyping of new languages and tools to support software evolution.
Squeak
- 1. Squeak www.squeak.org Marcus Denker www.iam.unibe.ch/~denker University of Bern
- 2. Topics History: The Dynabook Squeak Overview Projects using Squeak Squeak: A Tool for Research
- 3. History Alan Kay 1968: The Dynabook Vision Xerox PARC 1972-1980: Smalltalk Disney 1997 - 2001: Squeak
- 4. The Dynabook A Dynamic Medium for Creative Thought
- 6. Squeak Prototyping Environment Based on Smalltalk 80 Adds Multimedia features Color and 2D Graphics 3D, Sound, Networking... Etoys prototype for kids
- 7. Squeak: Overview DEMO
- 8. Viewpoints Tweak: Scripting + UI Croquet Coke/Pepsi/Cola Rethinking Language Implementation
- 9. Squeak.org Community squeak.org Lots of cool projects Some demos later Sadly not much coordination Working together is very hard!
- 10. Squeak 3.9 Merged back Squeakland + SmallLand + SCG + Impara + Seaside (NetStyle) New Features: Traits, Pragmas, Services, Look A ****lot**** of changes!
- 12. Plopp3d DEMO
- 13. Sophie Open-source multimedia publication and run-time frameworks Flash + iMovie + PDF Completely new text + font implementation
- 14. Sophie Project DEMO http://sophieproject.org/
- 15. Open-Croquet Immersible and collaborative system http://www.opencroquet.org version 1.0 is out
- 17. Qwaq Forums http://qwaq.com/
- 19. Seaside http://www.seaside.st/ Free seaside hosting Support for Ajax scriptaculous.seasidehosting.st/ http://seachart.seasidehosting.st/
- 21. CMSBox cmsbox.com
- 22. Part II: Research Why use a kids system for Research? Especially Software Engineering?
- 23. Example: SCG Software Evolution Two directions Reengineering Language support for Evolution
- 24. Reengineering Analyzing existing source code Understanding big systems Enabling future evolution Software Visualization
- 25. Moose Reengineering Environment Example: Chronia Many Plugins http://moose.unibe.ch/
- 26. Moose Implemented in Smalltalk (Cincom) Smalltalk enables Rapid prototyping of complex tools Very fast turnaround Agile development
- 27. Languages for Evolution Languages do not support Evolution How to support Evolution better?
- 28. Squeak for Prototyping Languages Completely open Reflection VM easy to modify Simple Simple Syntax Dynamic Typing
- 29. Traits Classes composed of Traits Collection of methods No state Pioneered in Squeak Scala, Perl6, Fortress, Slate
- 30. Changeboxes Provide first class model of Change History always available even at runtime System can be run in old version
- 31. Other groups... HPI Potsdam (Germany) University of Savoie (France) Ecole des Mines de Douai (France) Cadence Design Systems Inc. (USA)
- 32. Thats it...? ... for now Questions? Next?
- 33. Possible topics... Reflection Metaprogramming and Refactoring Bytecode + Bytecode Transformation Examples of how to use dev tools Monticello, Browser...