Day 3: An Eye for Evil
In Star Wars, Yoda was the first to detect the evil in Darth Vader. With Clojure, Rich Hickey has identified the core problems that plague the development of concurrent object-oriented systems. We’ve said frequently that mutable state is the evil that lurks in the hearts of object-oriented programs. We’ve shown several different approaches to handling mutable state. Io and Scala used the actor-based model and provided immutable constructs that gave the programmer the power to solve those problems without mutable state. Erlang provided actors with lightweight processes, and a virtual machine that allowed effective monitoring and communication, allowing unprecedented reliability. The Clojure approach to concurrency is different. ...
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