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Scala is a modern programming language for the Java Virtual Machine (JVM) that combines the best features of object-oriented and functional programming languages. Using Scala, you can write programs more concisely than in Java, as well as leverage the full power of concurrency. Since Scala runs on the JVM, it can access any Java library and is interoperable with Java frameworks. Scala for the Impatient concisely shows developers what Scala can do and how to do it. In this book, Cay Horstmann, the principal author of the international best-selling Core JavaTM, offers a rapid, code-based introduction that’s completely practical. Horstmann introduces Scala concepts and techniques in “blog-sized” chunks that you can quickly master and apply. Hands-on activities guide you through well-defined stages of competency, from basic to expert. Coverage includes Getting started quickly with Scala’s interpreter, syntax, tools, and unique idioms Mastering core language features: functions, arrays, maps, tuples, packages, imports, exception handling, and more Becoming familiar with object-oriented programming in Scala: classes, inheritance, and traits Using Scala for real-world programming tasks: working with files, regular expressions, and XML Working with higher-order functions and the powerful Scala collections library Leveraging Scala’s powerful pattern matching and case classes Creating concurrent programs with Scala actors Implementing domain-specific languages Understanding the Scala type system Applying advanced “power tools” such as annotations, implicits, and delimited continuations Scala is rapidly reaching a tipping point that will reshape the experience of programming. This book will help object-oriented programmers build on their existing skills, allowing them to immediately construct useful applications as they gradually master advanced programming techniques.

Until now, most discussions of Scala have been too abstract, academic, and complex for working programmers. Now, Scala for the Impatient concisely shows developers what Scala can do and how to do it.

Using Scala, you can write, read, debug, and test programs more easily, as well as leverage the full power of parallelism and concurrency. Moreover, since Scala runs on the JVM, it can access any Java library and integrate with any Java program. So for Java and other object programmers, Scala represents the best of both worlds.

In this book, Cay S. Horstmann does for Scala what he did for Java in his global best-seller Core JavaTM: He offers a rapid, code-based introduction that’s completely practical. Horstmann introduces each Scala concept and technique in “blog-sized” chunks you can quickly master and apply. Hands-on activities guide you through well-defined stages of competency, from basic to expert. Coverage includes

• Getting started quickly with Scala’s interpreter, syntax, tools, and unique idioms
• Mastering core language features: functions, arrays, maps, tuples, classes, objects, packages, imports, inheritance, files, regular expressions, and more
• Empowering and extending classes with traits and services
• Implementing new operators for Domain-Specific Languages and other purposes
• Working with higher-order functions, collections, and advanced types
• Leveraging Scala’s powerful pattern matching and case classes
• Creating Scala annotations and interoperating with Java annotations
• Reading, analyzing, creating, and writing XML
• Applying advanced “power tools”: Actors, Implicits, and Delimited Continuations

Scala is rapidly reaching a tipping point that will reshape the experience of programming. This book will help current object programmers build on their existing skills, allowing them to immediately construct useful applications as they gradually master breakthrough functional programming techniques.

The basics Control structures and functions Arrays Maps and tuples Classes Objects Packages and imports Inheritance Files and regular expressions Traits Operators Higher-order functions Collections Pattern matching and case classes Annotations XML processing Type parameters Advanced types Parsing Actors Implicits Delimited continuations. Presents an introduction to the Scala programming language which is an abbreviated version of object-orientated programming combined with the power of concurrency capable of running on the Java Virtual Machine