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Joseph Yoder   -   President

Joseph Yoder is a founder and principle of The Refactory, Inc., a company focused on software architecture, design, implementation, consulting and mentoring on all facets of software development. Joseph is an international speaker and pattern author and longstanding member of The Hillside Group, a group dedicated to improving the quality of software development. He is co-author of the Big Ball of Mud pattern, which illuminates many fallacies in the approach to software architecture. Joseph has chaired the Pattern Languages of Programming Conference (PLoP), as well as presented tutorials and talks at conferences such as OOPSLA and ECOOP. 

Lise B. Hvatum   -   Vice President

 

 

 

Rebecca Wirfs-Brock   -   Treasurer

Rebecca Wirfs-Brock is an internationally recognized leader in the development of object design methodologies. She invented the set of development practices known as Responsibility-Driven Design. Among her widely used innovations are use case conversations and object role stereotypes. She is the regular design columnist for IEEE Software and the author of the classic text, Designing Object-Oriented Software. Her most recent book, Object Design: Roles, Responsibilities and Collaborations, was published in 2002. 

Christian Köppe   -   Secretary

 

 

 

Christian Kohls   -   Member 

 

 

 

Ademar Aguiar   -   Member

 

 

 

TakashiIbaTakashi Iba  -   Member

Takashi Iba is an associate professor at the Faculty of Policy Management and the Graduate School of Media and Governance at Keio University, Japan. He received a Ph.D. in Media and Governance from Keio University in 2003. With collaborating with his students, Dr. Iba created many pattern languages concerning human actions. He authored Learning Patterns (2014), Presentation Patterns (2014), Collaboration Patterns (2014), Survival Language (2015), Words for a Journey (2015) and many academic books in Japanese such as the bestselling Introduction to Complex Systems (1998)."

Eduardo Guerra   -   Member

 

 

Richard P. Gabriel   -   Emeritus Member

 

 

 

 

Bob Hanmer   -   Emeritus Member

Alcatel-Lucent: Robert S. Hanmer is a Consulting Member of Technical Staff at Alcatel-Lucent. His work has included development, architecture and evaluation of highly reliable systems for the telephone network, especially in the areas of reliability and performance. He has also been active in the software patterns community since the mid-1990's, writing patterns and organizing pattern conferences. He has authored or co-authored 14 journal articles and book chapters. He has been introducing newcomers to patterns and to writing patterns since 1995.

 

Neil Harrison   -   Emeritus Member

 

 

 

Dirk Riehle   -   Emeritus Member

Prof. Dr. Dirk Riehle is the Pro­fes­sor for Open Source Soft­ware at the Friedrich-Alexander-University of Erlangen-Nürnberg. Before join­ing acad­e­mia, Riehle led the Open Source Research Group at SAP Labs, LLC, in Palo Alto, Cal­i­for­nia (Sil­i­con Val­ley). Riehle founded the Wiki Sym­po­sium, http://wikisym.org, a con­fer­ence ded­i­cated to wiki research and prac­tice. He was also the lead archi­tect of the first UML vir­tual machine. He is inter­ested in open source soft­ware engi­neer­ing and agile meth­ods, com­plex­ity sci­ence and human col­lab­o­ra­tion, and soft­ware design. Prof. Riehle holds a Ph.D. in com­puter sci­ence from ETH Zürich and an M.B.A. from Stan­ford Busi­ness School. He wel­comes email at This email address is being protected from spambots. You need JavaScript enabled to view it., blogs at http://dirkriehle.com, and tweets at @dirkriehle.

Grady Booch   -   Emeritus Member

 

 

 

Linda Rising   -   Emeritus Member

Independent Consultant: Linda Rising is an independent consultant in the areas of agile techniques, retrospectives, patterns, and organizational change. She is very active in the pattern and agile communities. She has authored or co-authored four books and countless journal articles and book chapters. She has been teaching patterns and pattern writing since the mid-1990's.

 

Dr. James Noble   -   Editor in Chief

James Noble is Professor of Computer Science and Software Engineering at Victoria University New Zealand. He is the author of Small Memory Systems: Patterns for Systems with Limited Memory (with Charles Weir), the editor of Prototype-Based Programming and Pattern Languages of Program Design 5 (with various co-editors). He has published many papers on object-orientation design patterns, aspects, software visualisation and software engineering in international academic conferences and journals.

Dr. Ralph Johnson   -   Editor in Chief

 

 



Errors and the printings in which they were fixed.


16th Printing (December 1998)

p. 142
Consequences, item 1: Change "Adapter" to "Adaptee" in the following phrase: "...by committing to a concrete Adapter class."

p. 328
In the implementation of DerivedClass::Operation(), the comment should come after the call to ParentClass::Operation(): void DerivedClass::Operation () { ParentClass::Operation(); // DerivedClass extended behavior }

14th Printing (December 1997)

p. 69
In the code for PreorderIterator::Next(), the statement _iterators.Push(i); was omitted. It should come immediately after i->First(); like so: void PreorderIterator::Next () { Iterator* i = _iterators.Top()->CurrentItem()->CreateIterator(); i->First(); _iterators.Push(i); while ( _iterators.Size() > 0 && _iterators.Top()->IsDone() ) { delete _iterators.Pop(); _iterators.Top()->Next(); } }

10th Printing (April 1997)

p. 94
"^ Maze new addRoom: r1; addRoom: r2; yourself" ->

should be

"^ Maze new addRoom: room1; addRoom: room2; yourself"

pp. 144, 145
The discussion on pluggable adapters was improved. Here are the updated pages (12KB PDF).

p. 253
if (strcmp(name, _name) != 0) {

should be

if (strcmp(name, _name) == 0) {

5th Printing (December 1995)

p. 94
createMaze: aFactory | room1 room2 aDoor | room1 = (aFactory make: #room) number: 1. room2 = (aFactory make: #room) number: 2. aDoor = (aFactory make: #door) from: room1 to: room2. ...

should have had assignment statements

createMaze: aFactory | room1 room2 aDoor | room1 := (aFactory make: #room) number: 1. room2 := (aFactory make: #room) number: 2. aDoor := (aFactory make: #door) from: room1 to: room2.

p. 300
The arrow labeled "subjects" in the diagram should have a black ball on the end.

3rd Printing (May 1995)

p. 297
"...to let the observer know which observer is sending the notification."

should be

"...to let the observer know which subject is sending the notification."


2nd Printing (December 1994)

p. 12, inside-back cover
The "spaghetti" diagram changed slightly to include an arrow labeled "sharing states" from State to Flyweight.

pp. 175, 195, 196, 202
Some lines on these pages did not print correctly. (Well they did, but with width 1 at 2200 dpi. If you squint really hard you might just be able to see them!) Here's what they should look like (24KB PDF).

These are some of the commonly asked for references referred to in Design Patterns and which are available on-line.


ET++
Includes papers and the program.

InterViews/Unidraw
Complete source available.

[HHMV92]
An Object Oriented Architecture for Constraint Based Graphical Editing.
Richard Helm, Tien Huynh, Kim Marriott, John Vlissides. Third Eurographics Workshop on Object-Oriented Graphics Champery, Switzerland. 1992

This paper presents an object-oriented architecture that integrates the graphical editing framework Unidraw, written in Unidraw, with QOCA, a powerful constraint solving toolkit.

[Joh92]
Documenting Frameworks Using Patterns
Ralph Johnson. Proc of OOPSLA '92, Vancouver, BC, Canada. (PostScript 342k)

[Choices]
Many references to the Choices object-oriented operating system.

[WG94]
ET++ - a Portable, Homogenous Class Library and Application Framework .
Andre Weinand, Erich Gamma.1994

test

  • Hillside Fellowship Award 2016
  • Security Patterns in Practice
  • PLoP 2017 in Vancouver
  • PLoP Conference Proceedings

The Hillside Fellowship Award

Congratulations to Ralph Johnson and Richard Gabriel for being presented the first Hillside Fellowship award at the 2016 PLoP event at Allerton, PLoP 2016 .

Hilside Fellowship Award Recipients 2016

The Hillside Fellowship Program was established in 2016 to recognize members of The Hillside Group who have made exceptional contributions to the Hillside community and to the patterns community at large. The

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Security Patterns in Practice

Eduardo Fernandez's new book " Security Patterns in Practice: Designing Secure Architectures with Software Patterns " has been published.

SecurityPatternsInPractice

It is the result of 14 years of producing security patterns with students and colleagues. Almost all of these patterns went through PLoP, EuroPLoP, AsianPLoP, or SugarLoafPLoP. Many of you have participated as shepherds or workshop commentators, the book

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PLoP™ 2017 in Vancouver, Canada

 
Check out the main PLoP Website for more information and details!!!

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PLoP Conference Proceedings

After the PLoP Workshops, writers are encouraged to modify their papers and submit a final version. The final versions are collected and submitted to the ACM Digital Library. The versions are also available from the conference website.

Conference Proceedings (ACM Digital Library)

Some of the PLoP accepted papers have been published on the ACM Digital Library . The

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