A treasure trove of practical knowledge
          for effectively hacking Lisp in the 21st century.
          This is your chance to learn from the master!
        
          
          [Luke Gorrie, creator of SLIME]
        
          A piece of jewel. Overall, an amazing book and one that must
          be on your desk if you are a serious Lisp developer.
        
          
          [Rangarajan Krishnamoorthy (full review)]
       
      
        
          I have been programming in Common Lisp for the last 35
          years, but when I went through the new book, I felt like a
          kid in a candy store, discovering all kinds of new/old
          patterns that were enlightening to me.
        
          
          [Jans Aasman, president and CEO of Franz Inc.]
        
          The optimization chapter is excellent. I'm not aware of any
          other resource that summarizes all this information and the
          explanations are clear. This is a great reference.
        
          
          [Arthur Lemmens, organizer of the ECLM]
       
      
        
          This is a reference book of advanced CL techniques, but I've
          read it cover to cover, and learned a lot from it, even
          though I've been using Lisp for more than a decade.
        
          
          [Peter Salvi]
        
          Weitz writes with clarity and concision, and has produced a
          book which can be read in one sitting or dipped into at
          leisure and will extend the practice of even seasoned Common
          Lisp professionals.
        
          
          [Christophe Rhodes, SBCL maintainer]