Clojure def vs defn for a function with no arguments

Question

I have written a program in clojure but some of the functions have no arguments. What would be the advantages of coding such functions as a \"def\" instead of a \"defn\" with no

Answer 1

defs are evaluated only once whereas defns (with or without arguments) are evaluated (executed) every time they are called. So if your functions always return the same value, you can change them to defs but not otherwise.