Successful programmers know more than how to code. They also know how to think about solving problems. Code Clinic is a series where our authors solve the same problems using different languages. Here Caleb Smith works with Clojure, a Lisp-based programming language. Caleb introduces a series of challenges and then provides overviews of his solutions in Clojure. Challenges include performing statistical analysis, searching directories for images, and accessing peripheral devices.