Programming in Scala is the definitive book on Scala, the popular language for the Java platform that blends object-oriented and functional programming concepts into a unique and powerful tool for developers. The fifth edition has been updated to cover new features up to, and including, Scala version 3.0. The Scala language has been exploding in popularity in recent years. More than 54,000 copies of Programming in Scala have been sold since the first edition was published in 2008. About the Author Martin Odersky is the creator of the Scala language. He is a professor at EPFL in Lausanne, Switzerland, where since 2001 he has led the team that developed the Scala language, libraries, and compiler. He is a founder of Lightbend, Inc., and was a co-designer of Java generics and the original author of the current javac reference compiler. Lex Spoon worked on Scala for two years at EPFL and is now a software engineer at Square, Inc. Bill Venners is president of Artima, Inc. He is a community representative on the Scala Center Advisory Board, and the designer of the ScalaTest testing framework and Scalactic library for functional, object-oriented programming.Frank Sommers is founder and president of Autospaces, Inc. a company providing workflow automation solutions to the financial services industry. Frank has been an active Scala user for over twelve years, and has worked with the language daily ever since.