Book Image

Scala Design Patterns - Second Edition

By : Ivan Nikolov
Book Image

Scala Design Patterns - Second Edition

By: Ivan Nikolov

Overview of this book

Design patterns make developers’ lives easier by helping them write great software that is easy to maintain, runs efficiently, and is valuable to the company or people concerned. You’ll learn about the various features of Scala and will be able to apply well-known, industry-proven design patterns in your work. The book starts off by focusing on some of the most interesting and latest features of Scala while using practical real-world examples. We will be learning about IDE’s and Aspect Oriented Programming. We will be looking into different components in Scala. We will also cover the popular "Gang of Four" design patterns and show you how to incorporate functional patterns effectively. The book ends with a practical example that demonstrates how the presented material can be combined in real-life applications. You’ll learn the necessary concepts to build enterprise-grade applications. By the end of this book, you’ll have enough knowledge and understanding to quickly assess problems and come up with elegant solutions.
Table of Contents (14 chapters)

The prototype design pattern

The prototype design pattern is a creational design pattern that involves creating objects by cloning them from existing ones. Its purpose is related to performance and keeping it high by trying to avoid expensive calls.

An example class diagram

In languages such as Java, we usually see a class that implements an interface with a clone method, which returns a new instance of the class. Consider the following diagram:

In the next section, we will provide a code example of the prototype design pattern from the point of view of Scala.

A code example

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