Set and Map

Set

An unordered collection. Fast at adding element & checking element is in the collection.

(set [1 2 3 4 5])

A hash map

;;; Object
{
  :id 7
  :name "James Bond"
  :email "jamesbond007@secretagent.com"
}

access

(def person {
  :id 7
  :name "James Bond"
  :email "jamesbond007@secretagent.com"
})

(println (:name person))
;;; == "James Bond"

Note that :name is a function which takes 1 parameter.