Eben Hewitt introduces the Apache Cassandra project to those interested in getting a quick clear picture of what Cassandra is, what are its main features, what is the the data model used and the API.
Josh Bloch and Bob Lee present 7 Java code puzzlers, code seeming to produce some result, but actually producing something unexpected. They explain why is that, showing the correct solution.
Guy Steele, Douglas Crockford, Josh Bloch, Alex Payne, Bruce Tate, and Ted Neward (moderator) hold a discussion on the future of programming. Topics included: the future beyond functional, running JVM/CLR on many cores, what is the future of type checking and type systems, languages for education, comparing DSLs and ubiquitous languages, proving code correctness, functional and parallelism.
Scott Davis reviews some of the most important HTML5 features: new semantic elements - header, footer, nav, section, and article-, form enhancements - placeholder text, autocomplete, autofocus, and validation-, video and mobile support.
Scott Davis makes a case for metadata or semantic data, pointing out that it is currently used by major websites to improve their traffic or the rank of the pages searched. He is presenting the most common ways to add metadata to a document: RDFa and microformats.
Chris Houser presents the expression problem showing two ways to solve it in some languages, followed by a demonstration of solving it using multimethods and protocols in Clojure, mentioning pros and cons of each solving method.
Yehuda Katz presents the evolution of the Ruby on Rails project, the challenges it had to overcome and what are the lessons that could be helpful in making other open source projects successful.
Hilary Mason presents the history of machine learning covering some of the most significant developments taking place over the last two decades, especially the fundamental math and algorithmic tools employed. She also exemplifies how machine learning is used by bit.ly to discover various statistical information about users.
Bob Lee and Eric Burke present Square, a card reader and its corresponding application used to read bank cards in order to receive payments through an Android device, showing how the magnetic stripe decoding works, presenting a point-of-sale API, and a library for persistence, REST communication and dialog management.