“Design Patterns” 15th Anniversary

It’s been 15 years since the publication of the seminal Gang of Four Design Patterns book. Since I was a reviewer of the original manuscript and also have a quote on the back cover of the book, the publisher recently asked me if I would write my thoughts about how I view the book today and how I think it’s affected software development over the past 15 years. You can find my essay along with essays by Linda Rising and Josh Bloch on the 15th anniversary web page for the book. There’s also an interview with the authors linked there, which I found interesting in part because of the similarity between what the authors say about patterns and functional languages and what I wrote in my essay on the same topic.