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Scala Design Patterns

You're reading from   Scala Design Patterns Write efficient, clean, and reusable code with Scala

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Product type Paperback
Published in Feb 2016
Publisher
ISBN-13 9781785882500
Length 382 pages
Edition 1st Edition
Languages
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Author (1):
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Ivan Nikolov Ivan Nikolov
Author Profile Icon Ivan Nikolov
Ivan Nikolov
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Table of Contents (14) Chapters Close

Preface 1. The Design Patterns Out There and Setting Up Your Environment 2. Traits and Mixin Compositions FREE CHAPTER 3. Unification 4. Abstract and Self Types 5. Aspect-Oriented Programming and Components 6. Creational Design Patterns 7. Structural Design Patterns 8. Behavioral Design Patterns – Part 1 9. Behavioral Design Patterns – Part 2 10. Functional Design Patterns – The Deep Theory 11. Functional Design Patterns – Applying What We Learned 12. Real-Life Applications Index

Summary


In this chapter, we learned about structural design patterns and specifically about the following: adapter, decorator, bridge, composite, facade, flyweight, and proxy. We went through the details of each of them and showed a class diagram as well as a code example for each. Because of the richness of Scala, sometimes there can be a better implementation using some of the nice features of Scala but sometimes the design pattern just looks the same as it would in a language such as Java.

In many cases, the structural design patterns seem quite similar. This, however, shouldn't confuse you as they still have different purposes. Some examples include:

  • Adapter versus Bridge: Adapter is used to convert one interface to another when we do not have access to the code. Bridge is used while designing software and it decouples abstraction from implementation for easier extensions in the future.

  • Proxy versus Decorator: Decorators usually enhance an interface. Proxies provide the same interface...

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