Functional vs. Object Oriented Programming
Ruby was the language that I used for primary development for the past year or so. Developing in Clojure has taken some time to get used to. The primary difference between a functional programming language and an object oriented is that a functional programming language places emphasis on modeling the process of transforming data whereas an object oriented language places emphasis on modeling the data itself.
The biggest mistake that I had made was to convert a class in Ruby to a module in Clojure that contain all of the same methods. This made for some hideous Clojure code. When trying to re-factor and create a understandable piece of Clojure code did I then realize the real difference between the two paradigms.
Which kind of language I prefer depends on the task at hand. After greater exposer I'm sure a clearer understanding will have developed.