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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 covered the main goals of the Kotlin programming language. We learned how variables are declared, the basic types, null safety, and type inference. We observed how program flow is controlled by commands such as if, when, for, and while, and we also took a look at the different keywords used to define classes and interfaces: class, interface, data class, and abstract class. We learned how to construct new classes and how to implement interfaces and inherit from other classes. Finally, we covered what design patterns are suitable for and why we need them in Kotlin.

Now, you should be able to write simple programs in Kotlin that are pragmatic and type-safe. There are many more aspects of the language we need to discuss. We'll cover them in later chapters once we need to apply them.

In the next chapter, we'll discuss the first of the three design pattern families – creation patterns.

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