For anyone struggling with dynamic typing in Clojure, thinking it's impossible to manage and even harder to build confidence in your code, please look at Spec a

For anyone struggling with dynamic typing in Clojure, thinking it's impossible to manage and even harder to build confidence in your code, please look at Spec and Orchestra. You can easily build predicative contracts for all of your data and know as soon as anything "goes wrong" in terms of your data shapes. I think everyone using Clojure JVM, ClojureScript, or Clojure CLR should be doing this.