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Kotlin Design Patterns and Best Practices

Kotlin Design Patterns and Best Practices

By : Alexey Soshin
4.5 (13)
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Kotlin Design Patterns and Best Practices

Kotlin Design Patterns and Best Practices

4.5 (13)
By: Alexey Soshin

Overview of this book

This book shows you how easy it can be to implement traditional design patterns in the modern multi-paradigm Kotlin programming language, and takes you through the new patterns and paradigms that have emerged. This second edition is updated to cover the changes introduced from Kotlin 1.2 up to 1.5 and focuses more on the idiomatic usage of coroutines, which have become a stable language feature. You'll begin by learning about the practical aspects of smarter coding in Kotlin, as well as understanding basic Kotlin syntax and the impact of design patterns on your code. The book also provides an in-depth explanation of the classical design patterns, such as Creational, Structural, and Behavioral families, before moving on to functional programming. You'll go through reactive and concurrent patterns, and finally, get to grips with coroutines and structured concurrency to write performant, extensible, and maintainable code. By the end of this Kotlin book, you'll have explored the latest trends in architecture and design patterns for microservices. You’ll also understand the tradeoffs when choosing between different architectures and make informed decisions.
Table of Contents (17 chapters)
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1
Section 1: Classical Patterns
6
Section 2: Reactive and Concurrent Patterns
11
Section 3: Practical Application of Design Patterns

Summary

In this chapter, we have learned how structural design patterns can help us to create more flexible code that can adapt to changes with ease, sometimes even at runtime. We've covered how we can add functionality to an existing class with the Decorator design pattern, and we've explored how operator overloading can allow us to provide more intuitive syntax to common operations.

We then learned how to adapt one interface to another interface using extension methods, and we also learned how to create anonymous objects to implement an interface only once. Next, we discussed how to simplify class hierarchies using the Bridge design pattern. You should now know how to create a shortcut for a type name with typealias and also how to define efficient constants with const.

Moving on, we looked at the Composite design pattern, and we considered how it could help you to design a system that needs to treat groups of objects and regular objects in the same way. We also learned...

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