#TITLE: About Clojure

Nikolai Ryzhikov CoF & CTO of Health Samurai

2022 July, Budva

• we are crafting FHIR+ platform for healthcare apps
• on of the biggest in Europa clojurians company ~50

• piece of art (simplicity)
• functional paradigm
• performance
• parallelism & concurrency
• isomorphic - backend, frontend, babashka
• java & js eco-system
• work in Health Samurai

• simplicity
• conceptual consistency
• no one breaking change

—

Promises in js from clj

FP is extremely simple

• design with functions - procedures - good component
• pure functions - ideal
• 20/80 dirty

• it is fast - can be as fast as Java
• java memory model

• all java & js libraries
• react story
• back/front & babashka

• Greatest Hits - https://changelog.com/posts/rich-hickeys-greatest-hits
• History

• REPL as a quintessence of clojure design
• emacs (spacemacs) + cider <<-

• syntax - LISP
• classes & objects
• mutable state

(a b c) => [a, b, c]

1 + 1 => (+ 1 1) fn(a,b) => (fn a b) if(cond) {} else {} => (if (cond) (expr) (expr)) funct(){…} => (func [args] …)

• setup emacs
• learn bindings
• start REPL

docker-compose up -d emacs src/budva/core.clj :cider-jack-in