Scala for the Impatient, 3rd Edition

Scala 3 is more concise, consistent, flexible, robust, and efficient, but there's a lot to learn and navigating features and improvements can be challenging. Scala for the Impatient, Third Edition, is a complete yet concise guide that reflects the major enhancements of Scala 3, from improved syntax and revamped type system to powerful contextual abstractions.

Written by renowned programming instructor Cay S. Horstmann–author of the classic Core Java–this indispensable tutorial offers a faster, easier pathway for learning today's Scala. Horstmann covers everything working developers need to know, focusing on hands-on solutions, not academic theory. Given the size and scope of Scala 3, there's plenty to cover but it's presented in small chunks organized for quick access and easy understanding, with plenty of practical insights and focused sample code.

Get started quickly with Scala 3 interpreter, syntax, tools, and current usage

Master core language features: functions, arrays, maps, tuples, packages, imports, exception handling, and more

Design and build better object-oriented code with Scala 3

Use Scala for real-world programming tasks: working with files, regular expressions, and XML

Work with higher-order functions and the powerful Scala collections library

Create concurrent programs with Scala futures

Understand the Scala type system, including revamped enums, intersection and union types, and enhanced type inference

Use contextual abstractions to easily extend class hierarchies, enrich existing classes, perform automatic conversions, and elegantly hide tedious details

Apply advanced "power tools" such as annotations and implicits

Discover how to "program with types," analyzing and generating types at compile time

Get a taste of whats now possible with Scala macros

If you're a Java, C++, or C# programmer who's new to Scala or functional programming–or even if you've already used earlier versions of Scala–this guide will help you write code that's more robust, more efficient, and more secure.