Clojur/ClojureScript,Elixir,Javascript

follow: rich hickey,david nolen,eric nomad, Dmitri Sotnikov( Author of the Luminus framework and Web Development with Clojure book. ) videos: simple made easy by ritch hickey,purely functional videos(paid) books: clojure in the action(manning),clojure for the brave,clojure high performance programming,

javascript mutablility especially with arrays ... clojure script/clojure is immutable

Nodejs,concurrency,Elixir