You can’t program in a language where you don’t understand how errors are handled.
Nothing terribly new to learn here if you come from a Java/.NET background– clojure has try/catch/finally error handling. Same sort of propagation.
Example:
;;
;; error handling
;;
(defn throw-err []
;; start our "try block"
(try
;; what's 5 divided by zero again?
(/ 5 0)
;; output the what the error is
(catch Exception e (str "exception was " (.getMessage e)))
;; no matter what, let's end by printing "oh well"
(finally prn "oh well")))
;; run the function above here
;; returns "exception was Divide by zero"
;; outputs "oh well" at the end as well
(throw-err)