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Learning Scala Programming

Learning Scala Programming

By : Sharma
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Learning Scala Programming

Learning Scala Programming

2 (3)
By: Sharma

Overview of this book

Scala is a general-purpose programming language that supports both functional and object-oriented programming paradigms. Due to its concise design and versatility, Scala's applications have been extended to a wide variety of fields such as data science and cluster computing. You will learn to write highly scalable, concurrent, and testable programs to meet everyday software requirements. We will begin by understanding the language basics, syntax, core data types, literals, variables, and more. From here you will be introduced to data structures with Scala and you will learn to work with higher-order functions. Scala's powerful collections framework will help you get the best out of immutable data structures and utilize them effectively. You will then be introduced to concepts such as pattern matching, case classes, and functional programming features. From here, you will learn to work with Scala's object-oriented features. Going forward, you will learn about asynchronous and reactive programming with Scala, where you will be introduced to the Akka framework. Finally, you will learn the interoperability of Scala and Java. After reading this book, you'll be well versed with this language and its features, and you will be able to write scalable, concurrent, and reactive programs in Scala.
Table of Contents (16 chapters)
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Evaluation strategies

When functions have some parameters defined in them, those function calls expect us to pass arguments while calling. And as we know, we can pass a function literal that gets evaluated at the time of the call or at the time when it is used. Scala supports call by value and call by name for functions. Let's discuss them in detail.

Call by name

Call by name is an evaluation strategy where we substitute the literal at the place from where we call our function. The literal gets evaluated when it first appears and gets called. We can understand this with a simple example. First, let's take our ColorPrinter application and pass a Boolean function literal that checks if the printer is switched on. For...

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