This book is very very very hard to read. The language is extremely cryptic.
I agree with Michael. This book is written for Eiffel programmers.
After reading Jean-Marc Jezequel's excellent first Eiffel book, I was looking for more information on "Design By Contract", and its impacts on real-world projects. Based on the author and subject matter, I immediately ordered "Design Patterns and Contracts.
If you want to learn about design patterns - don't buy this book! The most of the book is in Eiphel language which is not so easy do understand.
If you have already read the famous 1995 book, Design Patterns, by Gamma, Helm, Johnson, and Vlissides, you will enjoy this excellent sequel tremendously. It brings into sharp focus each of the object-oriented design patterns listed in the 1995 book by giving even more clear and more readable examples.
