john2x

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

sritchie

(def src [[{:name "smeagol"}]
          [{:name "gollum"}]
          [{:tuple "field!"}]])

;; Retrieve some field from a bunch of records:
(??<- [?name]
      (src ?m)
      (get ?m :name :> ?name))
;;=> (["smeagol"] ["gollum"])