Welcome to the Clojure Deref! This is a weekly link/news roundup for the Clojure ecosystem. (@ClojureDeref RSS) Highlights Congrats to Dragan Djuric on the 1.0.0 release of Numerical Linear Algebra for Programmers! Videos and podcasts Lost in Lambduhhs - Eric Normand Cognicast - Sean Corfield How to avoid premature optimization? - Eric Normand Dutch Clojure Meetup #139: Mirabelle - Matthieu Corbin London Clojurians Meetup: Recife - Testing your code with the help of a mo...