Book Image

Scala Design Patterns

By : Ivan Nikolov
Book Image

Scala Design Patterns

By: Ivan Nikolov

Overview of this book

Scala has become increasingly popular in many different IT sectors. The language is exceptionally feature-rich which helps developers write less code and get faster results. Design patterns make developer’s 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 will learn about the various features of Scala and 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 features of Scala while using practical real-world examples. We will also cover the popular "Gang of Four" design patterns and show you how to incorporate functional patterns effectively. By the end of this book, you will have enough knowledge and understanding to quickly assess problems and come up with elegant solutions.
Table of Contents (20 chapters)
Scala Design Patterns
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Index

Chapter 5. Aspect-Oriented Programming and Components

Many times in programming, we see pieces of source code that are repeated in different methods. In some cases, we could refactor our code and move them to separate modules. Sometimes, however, this is not possible. Some notable examples include logging and verification. Aspect-oriented programming is helpful in such cases, and we will get an understanding of it by the end of this chapter.

Components are reusable pieces of code that provide a number of services and have some requirements. They are extremely useful for avoiding code duplication and of course, for promoting code reuse. Here, we will see how to build components and how Scala makes the writing and use of components easier than other languages.

While getting familiar with aspect-oriented programming and components, we will go through the following top-level topics:

  • Aspect-oriented programming

  • Components in Scala