Implementations of the decorator pattern conceived for alternative presentations of the object-oriented programming paradigm

The software industry has identi ed, in a vast proportion, the object-oriented programming paradigm with the variant based in classes and single inheritance. Particularly, design patterns and their best-known implementations are largely conceived for this traditional object model. However, the last years have witnessed a steady growth of the popularity of several alternative models, which allow for di erent ways to organise the de nition of object behavior. This paper shows non-standard implementations of the decorator design pattern, which exploit behavior sharing and re ning features unique to alternative models. We claim that these features allow for more natural renderings of the pattern and avoid a well-known aw of the classical implementation, i.e. the loss of object identity. Eje: Workshop Ingeniería de software (WIS) Red de Universidades con Carreras en Informática (RedUNCI)