Observations on the observer pattern

Authors:
Christian Köppe
Affiliations:
Hogeschool Utrecht, Institute for Information & Communication Technology
Venue:
Proceedings of the 17th Conference on Pattern Languages of Programs
Year:
2010

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Abstract

A group of students who should have been familiar with basic design principles and MVC all failed to implement the Observer design pattern correctly while at the same time violating several design principles. This paper discusses what went wrong and why it probably went wrong. Possible suggestions are given for teaching the Observer pattern and for teaching design patterns in general.