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XOTcl Integrated development environment, inspired by Smalltalk programming environments: syntax highlight and checking, version control, test framework. [Open source, GPL]

An article about the usage of dynamic object aggregations as a foundation for composition.

Article by Gustaf Neumann and Uwe Zdun about filters as a language support for design patterns in object-oriented scripting languages.

The paper introduces per-object mixins as a new object-level language construct for object-based system composition. Per-object mixins are implemented in the scripting language XOTCL as a straightforward extension of its method chaining mechanism and ...