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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 FREE CHAPTER 2. Traits and Mixin Compositions 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

The flyweight design pattern


Usually when software is written, developers try to make it fast and efficient. Normally, this means less processing cycles and a smaller memory footprint. There are different ways to achieve these two aspects. Most of the time, a good algorithm will take care of the first one. The amount of used memory can have many causes and solutions, and the flyweight design pattern is there to help and reduce the memory used.

Note

The purpose of this design pattern is to minimize the memory usage with the help of an object that shares as much data as possible with other similar objects.

There are many cases where many objects share the same information. A common example when talking about flyweight is word processing. Instead of representing each character with all the information about font, size, color, image, and so on, we could just store the positions for similar characters and have a reference to one object that contains the common information. This makes the usage of...

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