Venkat Subramaniam shows how to implement several design patterns, including some GoF ones, using Groovy’s dynamic nature and closures.
Sebastian Erdweg introduces SugarJ, a Java-based extensible programming framework which extends Java with closures.
Ward Cunningham keynotes on how Events, Sockets, CORS, Closures, SVG, DSLs, Canvas, EC2 and Raspberry Pi contribute to a new type of wiki, a federated one.
Creighton Kirkendall introduces Google Closure Tools and the challenges writing a ClojureScript library.
Brendan Ribera introduces Mirah, a JVM-based programming language with a Ruby-like syntax, type inference, closures, meta-programming, macros, showing how to use it for Android development.
Neal Gafter discusses closures on the JVM, running other languages on the JVM, language-specific wrapper libraries, making the JVM more language-friendly, and whether lambda expressions are too hard.