- Protocols -> Interfaces

• add-watch sets observers on objects, like side cutting concerns. In Java it'd be done via Aspects.

• :pre and :post for pre- and post- compute on functions.

Links

• Design patterns implemented in Clojure: http://mishadoff.com/blog/clojure-design-patterns/* Brian Beckman talks to Rich Hicky about Clojure: https://www.youtube.com/watch?v=wASCH_gPnDw

Need to dive deep

• atoms
• swap!, juxtn
• def, defn, defmmulti
• :use vs :require
• :ns
• coersion & contagion related to numeric types