Programming in Scala, Fifth Edition 5th edition

This book is the authoritative tutorial on the Scala programming language, co-written by the language's designer, Martin Odersky. This fifth edition is a major rewrite of the entire book, adding new material to cover the many changes in Scala 3.0. In fact we have added so much new material that we split the book into two volumes. This volume is a tutorial of Scala and functional programming.
The Scala language, which blends object-oriented and functional programming concepts, has been exploding in popularity in recent years. This book is a comprehensive, step-by-step guide to learning Scala. If you are a programmer wanting to do your next software project in Scala, looking to expand your horizons by learning new concepts, or currently using Java and want to expand your knowledge of functional programming—or all of the above—then this book is for you.