Siri(ID:1660/sir002)Bruce Horn, CMU 1991. Object-oriented constraint language using a single abstraction mechanism. A conceptual blend of BETA and Bertrand. Similar to Kaleidoscope. Structures: Related languages
References: reflection of changes in the data. Programs based on these concepts are called reactive, after Alan Kay's Reactive Engine [Kay69]. A well-designed reactive program maintains an internal model that is kept consistent with an end user model. The end user's model is created and modified by direct manipulation, using an input device such as a mouse to alter a visual representation. This puts the user in control, rather than the computer. Implementing reactive programs is difficult, due to computational mechanisms that are rarely supported in existing programming languages. Siri addresses these needs in a simple and uniform way. The declarative nature of Siri bypasses many issues of control flow; dependency networks and constraint satisfaction will transparently sequence updates. Siri's single abstraction mechanism, the constraint pattern, supports multiple object views simultaneously; separate hierarchies for visual layout, encapsulation, and class/subclass; and multiple concurrent objects. In addition, Siri will provide a straightforward framework for creation and composition of Siri programs using direct manipulation in [SIGPLAN] Proceedings of the Conference on Object Oriented Programming Systems, Languages and Applications, Oct 1992. (OOPSLA '92) view details in [SIGPLAN] Proceedings of the Conference on Object Oriented Programming Systems, Languages and Applications, Oct 1992. (OOPSLA '92) view details |