Thalia

Scala is a new hybrid object-oriented/functional language written for the Java Virtual Machine (JVM). The Scala type system, while very powerful, can be daunting. This book helps remove obstacles by showing how to effectively use this language both on its own and within the JVM ecosystem.
"Scala in Depth" helps readers integrate Scala into their existing projects as well as introducing new best practices and designs that are emerging from the Scala community. This book covers advanced object oriented features of Scala, as well as functional concepts. The book also describes some fundamental coding styles that can prevent common pitfalls and help keep your code concise, expressive and readable. The book covers the new Scala 2.8.0 collections API.