+ = ?
I have been studying and practicing design patterns ever since I ran across an early draft of GoF's Design Patterns book at Computer Literacy bookstore almost nine years ago. I also enjoyed and continue to get mileage out of Martin Fowler's Refactoring book. Today, thanks to ScottW, I found Joshua Kerievsky's Refactoring to Patterns, a growing body of work showing how to use design patterns in refactoring. I suspect the work will continue to grow into an excellent book. Read it now (750k PDF) and buy the book when its published.