This book focuses on novel trends in software evolution research and its relations with other emerging disciplines. Mens and Demeyer, both authorities in the field of software evolution, do not restrict themselves to the evolution of source code but also address the evolution of other, equally important software artifacts. This book is the indispensable source for researchers and professionals looking for an introduction and comprehensive overview of the state-of-the-art.

This book focuses on novel trends in software evolution research and its relations with other emerging disciplines. Mens and Demeyer, both authorities in the field of software evolution, do not restrict themselves to the evolution of source code but also address the evolution of other, equally important software artifacts. This book is the indispensable source for researchers and professionals looking for an introduction and comprehensive overview of the state-of-the-art.

The 13th European Conference on Object-Oriented Programming (ECOOP'99) brought some 500 participants to Lisbon from June 14th to June 18th, 1999. As usual, the workshops took place during the rst two days of the conference and gave authors and participants an opportunity to present and discuss the most topicalandinnovativeideasinobject-oriented technology.Theimportanceofthe workshopswithinthecontext ofECOOPisbecomingincreasinglyrecognised; for the rs t time inthe history of the conference, the number of workshopproposals for ECOOP'99 actually exceeded the slots availableand some had to be refused. In addition to the usual conference proceedings, Springer-Verlag has also undertaken, forthe pasttwo years, the publicationof a WorkshopReader, which bringstogether the results of the workshops, panels, and posters held during the conference. This book, the 4th ECOOP WorkshopReader, di ers from previous editions in two signi cant ways. Firstly, instead of simply reproducing the position - pers, it presents an overview of the main points made by the authors as well as a summary of the discussions that took place. Secondly, to make the text more uniformandreadable, allchapters havebeen written ina commonformat(using LaTeX lncs style les). This book was only possible thanks to the eo rt of each workshop organiser in particular, and each workshop, poster, and panel participant in general. The innovations introduced in this book implied additional work for the workshop organisers in terms of recording and summarising the discussions as well as adapting the written presentations to a common format. This extra e ort will certainly be appreciated by the readers.

At the time of writing (mid-October 1998) we can look back at what has been a very successful ECOOP'98. Despite the time of the year - in the middle of what is traditionally regarded as a holiday period - ECOOP'98 was a record breaker in terms of number of participants. Over 700 persons found their way to the campus of the Brussels Free University to participate in a wide range of activities. This 3rd ECOOP workshop reader reports on many of these activities. It contains a careful selection of the input and a cautious summary of the outcome for the numerous discussions that happened during the workshops, demonstrations and posters. As such, this book serves as an excellent snapshot of the state of the art in the field of object oriented programming. About the diversity of the submissions A workshop reader is, by its very nature, quite diverse in the topics covered as well as in the form of its contributions. This reader is not an exception to this rule: as editors we have given the respective organizers much freedom in their choice of presentation because we feel form follows content. This explains the diversity in the types of reports as well as in their lay out.

Object-Oriented Reengineering Patterns collects and distills successful techniques in planning a reengineering project, reverse-engineering, problem detection, migration strategies and software redesign. This book is made available under the Creative Commons Attribution-ShareAlike 3.0 license. You can either download the PDF for free, or you can buy a softcover copy from lulu.com. Additional material is available from the book's web page at http://scg.unibe.ch/oorp