Let Over Lambda

About the book

Let Over Lambda by Doug Hoyte (2008) is an advanced book on Common Lisp macros, widely considered one of the most challenging and interesting books on the subject. Its title refers to a closure, a let wrapped over a lambda, and it explores how Lisp’s macro system lets programmers extend the language itself in ways most languages cannot. The book makes a strong case that Lisp macros are a uniquely powerful programming tool, and is aimed at readers who already know some Lisp.