Clojure example

clojure_example.clj

(def users [{:first-name "William" :last-name "Hudson"}
            {:first-name "Ellen" :last-name "Ripley"}
            {:first-name "Dwayne" :last-name "Hicks"}
            {:first-name "Carter" :last-name "Burke"}])

(def user {:first-name "William" :last-name "Hudson"})

(get :first-name user)

(:first-name user)



(defn full-name [user]
  (str (:first-name user) " " (:last-name user)))


(map full-name users)
("William Hudson" "Ellen Ripley" "Dwayne Hicks" "Carter Burke")


(sort 
  (fn [u1, u2] 
    (compare (:last-name u1) (:last-name u2))) 
  users)

(sort-by :last-name users)
({:first-name "Carter", :last-name "Burke"} {:first-name "William", :last-name "Hudson"} {:first-name "Dwayne", :last-name "Hicks"} {:first-name "Ellen", :last-name "Ripley"})

(map full-name (sort-by :last-name users))
("Carter Burke" "William Hudson" "Dwayne Hicks" "Ellen Ripley")

(require 'clojure.string)
(clojure.string/join "," some-list)

(require '[clojure.string :as str])
(str/join "," some-list)


(str/join ", " (map full-name (sort-by :last-name users)))
("Carter Burke, William Hudson, Dwayne Hicks, Ellen Ripley")

(ns user_examples
  (:require [clojure.string :as string]))

(defn sorted-full-names
  "Returns a string containing comma separated user full names sorted by last name"
  [users]
  (str/join ", " (map full-name (sort-by :last-name users))))

jrclj_demo.rb

# Gemfile
gem "jrclj"

clj = JRClj.new

# Import a clojure namespace so you can call functions defined in it.
clj._import "some.clojure.ns"

# Call a clojure function
result = clj.function_name(arg1, arg2)


users = [{first_name: "William", last_name: "Hudson"},
         {first_name: "Ellen", last_name: "Ripley"},
         {first_name: "Dwayne", last_name: "Hicks"},
         {first_name: "Carter", last_name: "Burke"}]

clj._import("users_example")
# This won't work.
clj.sorted_full_names(users)


users = [{"first-name"=>"William", "last-name"=>"Hudson"},
         {"first-name"=>"Ellen", "last-name"=>"Ripley"},
         {"first-name"=>"Dwayne", "last-name"=>"Hicks"},
         {"first-name"=>"Carter", "last-name"=>"Burke"}]
clj_users = Zweikopf::Transformer.from_ruby(users)
clj.sorted_full_names(users)