Seph is a new experimental language. It is based on pure differential prototype based object orientation, with immutability and polymorphic dispatch built in deep. Seph uses the new features in Java 7 to full effect, by compiling highly dynamic code to use method handles and invoke dynamic. It's got light weight threads and the mature concurrency primitives from Clojure.
Programming language nerd, JRuby core developer, language designer (Ioke), lisp and ruby fanatic. bio from Twitter
4:10pm Structural Prototypes: Resolving the Statically-typed Object-functional Dichotomy by Daniel Spiewak
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