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 interpreter design pattern

In modern programming, we sometimes have to deal with problems from well-understood and well-defined domains. In some cases, it makes sense to represent the domain with a language, which could then make it easy to solve problems using an interpreter.

The interpreter design pattern is useful for specifying how to evaluate sentences in a language by representing it using classes and building syntax trees to evaluate the language expressions.

The interpreter design pattern makes use of the composite design pattern as well. Some common uses of interpreters are for language parsing, protocols, and so on.

An example class diagram

Creating a language and grammar is a complicated task and before getting...