Vikash Sharma - Learning Scala Programming

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First published: January 2018

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Vikash Sharma is a software developer and open source technology evangelist. He tries to keep things simple, which helps him write clean and manageable code. He has invested a large amount of time learning and implementing Scala code, and he has authored video courses for Scala. He works as a developer at SAP Labs.

Vasilis Nicolaou is a software engineer, and a Linux and FOSS hobbyist and enthusiast. He began his career at CERN as a Linux developer and now works for Rentalcars.com as a senior software engineer developing microservices and distributed system solutions with Scala and Akka.

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Scala, despite being a general purpose JVM-based language like Java, provides an edge with functional programming primitives. Scala has a rich type system, which makes it more expressive. Using type systems, developers can write applications that are less error prone at runtime. Once you have spent enough time learning and practicing concepts, working with Scala is fun. Rich constructs and abstractions have made it powerful, and even framework and library developers enjoy working with Scala.

Keeping these points in mind, this book provides you with all the essentials you need to write programs using Scala. It has all the basic building blocks someone new to Scala might want to know about it, along with the reasons for using it. One of the major goals of this book is to enable you to choose a particular construct above another.

This book will be a companion on your journey towards learning and writing good software using Scala. We believe it'll be a fun journey for you all.

This book is for programmers who want to get to grips with Scala to write concurrent, scalable, and reactive programs. No prior experience with any programming language is required to learn the concepts explained in this book. However, knowledge of any programming language will help the reader to understand concepts more quickly.

, Getting Started with Scala Programming, introduces you to programming paradigms and explains why choosing Scala gives you an edge over other languages. This chapter ends with demonstrating our first Scala program.

, Building Blocks of Scala, explains the basic constructs required to write a simple program. We'll discuss data types, variables, and literals, with a little bit on type inference.

, Shaping our Scala Program, takes you through looping constructs, control structures, and, most importantly, pattern matching.

, Give Meaning to Programs with Functions, discusses the important functions, function literals, and function call mechanisms. We'll end the chapter with a discussion on partial functions.

, Getting Familiar with Scala Collections, introduces you to Scala's rich collections. We'll discuss mutable and immutable collections, and talk about choosing the most suitable collection.

, Object-Oriented Scala Basics