-main.

• There were some interesting discussions this week on Clojure mailing lists: parallel sequence side-effect processor, Idiom question (on threading macros), graphql/relay for reagent?
• Reusable Components
• Martian: an HTTP client that uses Swagger definitions
• Om Next incremental rendering

Libraries & Books.

• Arachne community update
• tappit: Test Anything Protocol for Clojure
• data-frisk-reagent visualises Reagent app data in tree form
• re-frisk takes this to the next level if you are using re-frame
• data-scope visualises Clojure data (on the JVM) 

People are worried about Types. ?

• Union Types with Clojure.Spec, including a macro that does compile time checking that all of the specs are matched on. I’m very excited about the possibilities for this.
• David Nolen’s talk at Papers We Love on Parsing With Derivatives is up on Youtube
• Spec vs types questions on Reddit with some good answers from Alex Miller
• Stuart Halloway on Agility & Robustness from his talk at Strange Loop last week
• Clojure 1.9.0-alpha13 is out

Foundations.

• AOT compilation is coming to Java 9

Learning.

• In/Clojure 2016, the first Clojure conference in India has a CFP open and tickets available.