Here are some examples of design patterns which you have already seen. For each design pattern, this list notes the problem it is trying to solve, the solution that the design pattern supplies, and any disadvantages associated with the design pattern. A software designer must trade off the advantages against the disadvantages when deciding whether to use a design pattern. Tradeoffs between flex...

This report investigates the relationships between design patterns and programming languages. A comparison is carried out between the usual track of programming languages development and the discovery of patterns. We argue that there are fundamental di erences between the two. We o er a taxonomy of patterns based on how far they are from becoming actual language features. An observation is made...