There are sometimes cases where we want to be able to provide different implementations for a method of a class. We might not even know all the possibilities that could exist at the moment of writing, but we can add them later and combine them or we can allow someone else to do this instead. This is another use case of the decorator design pattern, which for this purpose could be implemented with the stackable traits design pattern. We have already seen this pattern before in this book in Chapter 7, Structural Design Patterns, but we used it to read data, which adds a really important catch there. We will see another example here, which will make sure everything is completely clear.
Scala Design Patterns - Second Edition
By :
Scala Design Patterns - Second Edition
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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)
Preface
Free Chapter
The Design Patterns Out There and Setting Up Your Environment
Traits and Mixin Compositions
Unification
Abstract and Self Types
Aspect-Oriented Programming and Components
Creational Design Patterns
Structural Design Patterns
Behavioral Design Patterns – Part One
Behavioral Design Patterns – Part Two
Functional Design Patterns – the Deep Theory
Applying What We Have Learned
Real-Life Applications
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