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Spark is a fast, in-memory cluster computing framework with a language-integrated interface in Scala. It shines at iterative MapReduce (e.g. machine learning) and interactive data mining, where keeping data in memory provides substantial speedups.

He CC'ed Martin Odersky, the lead designer of Scala and Typesafe’s Chief Architect. Given that the two people best-situated to improve Scala had just asked me about my experience over the past two years of using Scala, I wrote a long, considered, brutally honest response.

Typesafe provides an easy-to-use packaging of the Scala programming language, Akka middleware, and developer tools via the open source Typesafe Stack, as well as commercial support and maintenance via the Typesafe Subscription. Typesafe also provides training and consulting services to accelerate the commercial adoption of Scala and Akka.

The Manifests. A Manifest is class whose instances are objects representing types. Since these instances are objects, you can pass them around, store them, and generally call methods on them. With the support of implicit parameters, it becomes a very powerful tool

Citing a need to be able to respond faster to events, and disappointment in the feature set and timeframe for Java 7, the team behind guardian.co.uk is using Scala as an alternative to Java for their new projects. InfoQ spoke to Web Platform Development Team Lead Graham Tackley about their current stack, the reasons behind the move, and the experience of using Scala in large-scale development.

I would strongly advise not to inherit from a case class. It has surprising effects on equals and hashCode, and has been deprecated in Scala 2.8. Instead, define x in a trait or an abstract class. scala> trait A { val x: Int } defined trait A scala> case class B(val x: Int, y: Int) extends A defined class B http://www.scala-lang.org/node/3289 http://www.scala-lang.org/node/1582