David Nolen explains the power of the Transit format (efficiently serializing values to JSON and MessagePack), Transducers, the power of Facebook's React when bundled with immutable data structures.
Marc Prud'hommeaux talks about his experience using Apple's Swift language, both to write new code and port an existing Objective-C code base. Also: immutable data structures, concurrency, and more.
Dean Wampler explains Scalding and the other Hadoop support libraries, the return of SQL, how (big) data is the killer application for functional programming, Java 8 vs Scala, and much more.
Crista Lopes discusses the idea of using constraints to define styles of programming and architecture. Also: large scale static analysis of open source code, Open Simulator and VR, and much more.
The Content Security Policy specification is a mechanism web applications can use to mitigate a broad class of content injection vulnerabilities, such as cross-site scripting (XSS). Content Security Policy is a declarative policy that lets web developers inform the client about the sources from which the application expects to load resources.
Eva Andreasson explains the various Hadoop technologies and how they interact, real-time queries with Impala, the Hadoop ecosystem including Hue, Oozie, YARN, and much more.
Erik Meijer explains the various aspects needed to categorise data stores, how reactive programming fits in with databases, the return to data transformation, denotational semantics, and much more.
Damian Conway explains where Perl 5.x is used today and why (hint: the CPAN library repository), and what Perl 6 offers: modern OOP, an optional type system, libraries for parallelism and concurrency, and very powerful built-in tools for parsing including extensible grammars.
Stefan Tilkov explains the importance of Hypermedia in REST and how to use it, ROCA (Resource oriented client architecture), WebSockets vs polling or server sent events, and much more.
Laurent Sansonetti explains using Ruby for iOS development with RubyMotion, how Garbage Collection works in RubyMotion, the library ecosystem, the state of debugging and profiling, and much more.
Brian LeRoux talks about the PhoneGap Build service, mobile web apps vs native, Facebook's switch to a native iOS app, PhoneGap adoption in emerging markets, Firefox OS, Adobe's web tools and more.