Scalatra is a Scala web framework that follows the principles of the Sinatra Ruby web framework. It was originally known as Step and it is the framework behind the RESTful backend that is used by LinkedIn Signal.
It was recently announced that InfoQ is creating a new Operations community. In addition to that, another major change which has been in the works for the last few months at InfoQ is the conversion of the Java community to the Scala community. InfoQ spoke with a prominent Scala expert and members of the former InfoQ Java editorial team to learn more about this change and why it was made.
Today, the Akka team released version 0.7 of their actors framework for the Java Virtual Machine. Akka attempts to address future concurrency challenges with a solution relying on message based actors, software transactional memory and appropriate fault handling strategies. InfoQ talked to Jonas Bonér about the intent behind Akka, its current state and adoption, and future plans.
The long-awaited beta for the new Scala version 2.8 has finally been released. It includes many new features, like for example a redesigned collections library, named and default arguments, and a much improved Eclipse IDE.
Philipp Haller and Martin Odersky introduce a type system that enables safe massage transfer in Scala actors. Formalized as an extension of the EPFL Scala compiler, “Object Capability Types” system, based on capability checking and external uniqueness, enforces race safety without sacrificing performance and removes significant limitations on message shape imposed by existing approaches.
Scala has been receiving much attention lately as a possible candidate to replace Java in the future. James Strachan creator of Groovy advocates in favor of Scala as James Gosling, creator of Java and Charles Nutter JRuby Core Developer, have done in the past.
Evan Weaver, Lead Engineer in the Services Team at Twitter, who’s primarily job is optimization and scalability, talked about Twitter’s architecture and especially the optimizations performed over the last year to improve the web site during QCon London 2009.
David Pollak, found of the Lift web framework and "Beginning Scala" author, has announced a new initiative "Goat Rodeo" that aims to bring data modeling into the 21st century.
Data, Context and Interaction : A New Architectural Approach by James O. Coplien and Trygve Reenskau
James O. Coplien and Trygve Reenskaug have recently introduced a new architectural approach to OOP based on Data, Context and Interaction pattern. It should allow capturing user mental model in terms of behavioral requirements, something that classic OOP fails to do. The article, that triggered many reactions and critics, provides insights into DCI using concrete examples to show its advantages.
In this interview made by InfoQ’s Sadek Drobi, Don Syme, a Senior Researcher at Microsoft Research, answers questions mostly on F#, but also on functional programming, C# generics, type classes in Haskell, similarities between F# and Scala.
Grey Lens Man, a blogger who does not decline his identity, posted an interesting piece about legacy problems plaguing the enterprise and proposes a new software stack as viable solution: JOSH, JSON OSGi Scala HTTP.
Bruce Eckel’s recent blog post on the legacy left by C++ and Java generated a lot of reaction. While mentioning some design mistakes, he concludes that both languages have had a significant role in programming languages evolution and an important positive legacy. But is it not too early to talk about their legacy?
In this interview filmed at QCon SF 2008, Lennart Augustsson talks about writing DSLs in Haskell, presenting the advantages offered by the language. In that context, he talks about embedded DSLs, static and dynamic languages, syntax and semantics, monads and many other related topics.
In the beginning of last year, Ehud Lamm launched on Lamba the Ultimate a thread about programming languages predictions for 2008. Several subjects popped up: concurrency, functional programming, future of Java, Ruby, C++, and many others… What really happened in 2008 and what are the prospects for 2009? Bloggers have addressed these questions on demand of James Iry, echoing at last year thread.
In this interview filmed during QCon London 2008, Ted Neward, author of "Effective Enterprise Java", talks about languages, statical, dynamical, objectual or functional. He dives into Java, C#, C++, Haskell, Scala, VB, and Lisp, to name some of them, comparing the benefits and disadvantages of using one or another.