Episode 215: Gang of Four – 20 Years Later

Johannes Thönes talks with Erich Gamma, Ralph Johnson and Richard Helm from the Gang of Four about the 20th anniversary of their book Design Patterns. They discuss the following topics: the definition of a design pattern and each guest’s favorite design pattern; the origins of the book in architecture workshops; the writing of the book together with the community; the rock-star feeling at the release of the book at OOPSLA conference; the influence of the book on the industry; the evolution of the Observer pattern; and new patterns since the book was released. The interview closes with each guest talking about their current projects.

Venue: Internet

Related Links

• Design Patterns: Elements of Reusable Object-Oriented Software by Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides: http://www.amazon.com/Design-Patterns-Object-Oriented-Professional-Computing/dp/0201634988
• Erich Gamma: http://en.wikipedia.org/wiki/Erich_Gamma
• Richard Helm: http://en.wikipedia.org/wiki/Richard_Helm
• Ralph Johnson: http://en.wikipedia.org/wiki/Ralph_Johnson_(computer_scientist)
• John Vlissides: http://en.wikipedia.org/wiki/John_Vlissides
• Episode 81: Interview Erich Gamma: http://www.se-radio.net/2007/12/episode-81-interview-erich-gamma/
• A Pattern Language: Towns, Buildings, Construction by Christopher Alexander A Pattern Language: Towns, Buildings, Construction by Christopher Alexander: http://www.amazon.com/Pattern-Language-Buildings-Construction-Environmental/dp/0195019199
• Kent Beck: http://en.wikipedia.org/wiki/Kent_Beck
• Grady Booch: http://en.wikipedia.org/wiki/Grady_Booch
• Episode 76: Special Episode on the Patterns Journal: http://www.se-radio.net/2007/11/episode-76-special-episode-on-the-patterns-journal/
• Episode 1: Patterns: http://www.se-radio.net/2006/01/episode-1-patterns/
• Chinese Gang of Four: http://en.wikipedia.org/wiki/Gang_of_Four
• Gang of Four, the post-punk group: http://en.wikipedia.org/wiki/Gang_of_Four_(band)
• Team Blog: Visual Studio Online “Monaco”

Erich Gamma

• Twitter: @ErichGamma
• Team Blog: Visual Studio Online “Monaco”

Richard Helm

• Richard Helm at BCG Website: http://www.bcg.com/expertise_impact/BCG_fellows/technology/richard_helm.aspx
• BCG Value Pattern: https://www.bcgperspectives.com/content/articles/value_creation_strategy_corporate_strategy_portfolio_management_value_patterns/

Ralph Johnson

• Metaficient: http://metaficient.com/
• Twitter: @RalphJohnson

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