@inproceedings{springer2016cop,
  author = {Matthias Springer and Hidehiko Masuhara and Robert Hirschfeld},
  title = {Classes As Layers: Rewriting Design Patterns with {COP}: Alternative Implementations of Decorator, Observer, and Visitor},
  pdf = {cop2016.pdf},
  booktitle = {Proceedings of the 8th International Workshop on Context-Oriented Programming},
  series = {COP'16},
  month = jul,
  year = {2016},
  isbn = {978-1-4503-4440-1},
  date = {2016-07-19},
  location = {Rome, Italy},
  pages = {21--26},
  numpages = {6},
  opturl = {http://doi.acm.org/10.1145/2951965.2951968},
  doi = {10.1145/2951965.2951968},
  acmid = {2951968},
  publisher = {ACM},
  address = {New York, NY, USA},
  keywords = {Context-Oriented Programming, Decorator, Design Patterns, Layers, Observer, Visitor, Squeak, Smalltalk},
  abstract = {This paper analyzes and presents alternative implementations of three well-known Gang of Four design patterns: Decorator, Observer, and Visitor. These implementations are more than mere refactorings and take advantage of a variant of context-oriented programming that unifies classes and layers to overcome shortcomings in a conventional, object-oriented implementation.}
}