Description: 
In areas such as GUI programming the design style known as event-driven or publish-subscribe is often attractive as a replacement for standard control structures. It provides more flexibility by decoupling cause and effect. Apart from the Observer pattern, a useful but limited technique, there is no generally accepted view of what the proper OO abstractions should be. The talk describes software architecture principles for designing event-driven systems, with the usual goals of extendibility, reusability and reliability. Warnings: (1) The presentation is fairly dependent on Eiffel mechanisms. (2) Although we think it has practical and pedagogical value, the material is not particularly advanced. References: [1] B. Meyer, chapter 20 of "Touch of Class", draft of textbook available at http://touch.ethz.ch. [2] "The Power of Abstraction, Reuse and Simplicity: An Object-Oriented Library for Event-Driven Design", in From Object-Orientation to Formal Methods: Essays in Memory of Ole-Johan Dahl, eds. Olaf Owe, Stein Krogdahl, Tom Lyche, Lecture Notes in Computer Science 2635, Springer-Verlag, 2004, pages 236-271, available at http://se.ethz.ch/~meyer/publications/lncs/events.pdf.

Runtime:1:06:37

Rating:TV-G