Interest in the Scala programming language continues to grow for many reasons. Scala embraces the functional programming style without abandoning the object-oriented paradigm, and it allows users to write programs more concisely than in Java. Because Scala runs on the JVM, it can access any Java library and is interoperable with familiar Java frameworks. Scala also makes it easier to leverage the full power of concurrency.   Written for experienced Java, C++, or C# programmers who are new to Scala or functional programming, Scala for the Impatient, introduces the key Scala concepts and techniques students need in order to be productive quickly. It is the perfect introduction to the language, particularly for impatient readers who want to learn the fundamentals of Scala so they can start coding quickly. It doesn’t attempt to exhaustively list all the features of the language or make readers suffer through long and contrived examples. Instead, carefully crafted examples and hands-on activities guide through well-defined stages of competency, from basic to expert.   This new edition has been revised and thoroughly updated for Scala 2.12 and to reflect current Scala usage. It includes added coverage of recent Scala features, including string interpolation, dynamic invocation, implicit classes, and futures.