Clojure is Pragmatic

speaker: Lucas Bradstreet event: ClojureSG #4 ** immutability by default ** atoms works with an update function, which can be a composed function so only one call to swap! ** transients (transient a) used by into ** refs and agents ** java interop protocols proxu/reify extend-type ** source compile by default ** performance use :jvm-ops["-server”] in prod/profiling Java 1.8’s flight recorder

• -jvm-opts: -XX:+UnlockCommercialFeature -XX:+FlightRecorder
• low perf hit ** map with known keys defrecord must better performance ** type hinting leiningen :global-vars {warn-on-reflection true} ** unchecked math when it matters ** edn for configuration tagged literals can have comments use transit for REST ** deployment uberjar aot for faster startup ** clojurescript chestnut template ** libraries kibit - refactoring code timbre - logging