Most Clojure devs (myself included) are not building projects right at the REPL and indeed we do typically write normal code files, each file is a namespace. Th

Most Clojure devs (myself included) are not building projects right at the REPL and indeed we do typically write normal code files, each file is a namespace. The changing of a Var is not a typical Clojure idiom at all, and I don't think I've ever seen it done in any production code or the big Clojure libraries.