In this snippet parentheses are in the wrong place (defmacro nil-throws [form] `(let [result# ~form] ;; assign the evaluation of form to result#

In this snippet parentheses are in the wrong place (defmacro nil-throws [form] `(let [result# ~form] ;; assign the evaluation of form to result# (if (nil? result#) (throw (ex-info "uh oh, we got nil!" {:form '~form}) ;; save form for inspection result#)))) I guess, should be (defmacro nil-throws [form] `(let [result# ~form] ;; assign the evaluation of form to result# (if (nil? result#) (throw (ex-info "uh oh, we got nil!" {:form '~form})) ;; save form for inspection result#)))