Clojure Protocols & Datatypes — A sneak peek « The Free GeekClojure 1.2 introduces two very remarkable features – Protocols and Datatypes. Clojure is defined in terms of abstractions and various implementations of those abstractions. For example, vectors, maps, lists, sets in Clojure implement the sequence abstraction which lets us treat any of those data structures as sequences. Until recently it was not possible to define and implement such core abstrac
