Advanced Kotlin
Minimum price
Suggested price

Advanced Kotlin

About the Book

You can be a developer - even a good one - without understanding the topics explained in this book, but at some point, you’ll need it. You are likely using tools made using features described in this book every day, such as libraries based on annotation processing or compiler plugins, classes that use variance modifiers, functions with contracts, or property delegates, but do you understand these features? Would you be able to implement similar tools yourself? Would you be able to analyze and debug them? This book will make all this possible for you. It focuses exclusively on the most advanced Kotlin topics, which are often not well understood even by senior Kotlin developers. It should equip you with the knowledge you need and show you possibilities you never before imagined. I hope you enjoy it as much as I enjoyed writing it.

About the Author

Marcin Moskała
Marcin Moskała

Marcin Moskala is an experienced developer and Kotlin trainer. He is the founder of the Kt. Academy, Kotlin GDE, an official JetBrains partner for teaching Kotlin, and author of the books Effective Kotlin, Kotlin Coroutines, and Android Development with Kotlin.

Marcin Moskała

Episode 254

Bundles that include this book

Bought separately
Bundle Price

Table of Contents

    • Introduction
      • Who is this book for?
      • That will be covered?
      • The structure of the book
      • The Kotlin for Developers series
      • Conventions
      • Code conventions
      • Acknowledgments
    • Generic variance modifiers
      • List variance
      • Consumer variance
      • Function types
      • The Covariant Nothing Object
      • The Covariant Nothing Class
      • Variance modifier limitations
      • UnsafeVariance annotation
      • Variance modifier positions
      • Star projection
      • Summary
    • Interface delegation
      • The delegation pattern
      • Delegation and inheritance
      • Kotlin interface delegation support
      • Wrapper classes
      • The decorator pattern
      • Intersection types
      • Limitations
      • Conflicting elements from parents
      • Summary
    • Property delegation
      • How property delegation works
      • Other getValue and setValue parameters
      • Implementing a custom property delegate
      • Provide a delegate
      • Property delegates in Kotlin stdlib
      • The notNull delegate
      • The lazy delegate
      • The observable delegate
      • The vetoable delegate
      • A map as a delegate
      • Review of how variables work
      • Summary
    • Kotlin Contracts
      • The meaning of a contract
      • How many times do we invoke a function from an argument?
      • Implications of the fact that a function has returned a value
      • Using contracts in practice
      • Summary
    • Java interoperability
      • Nullable types
      • Kotlin type mapping
      • JVM primitives
      • Collection types
      • Annotation targets
      • Static elements
      • JvmField
      • Using Java accessors in Kotlin
      • JvmName
      • JvmMultifileClass
      • JvmOverloads
      • Unit
      • Function types and function interfaces
      • Tricky names
      • Throws
      • JvmRecord
      • Summary
    • Using Kotlin Multiplatform
      • Multiplatform module configuration
      • Expect and actual elements
      • Possibilities
      • Multiplatform libraries
      • A multiplatform mobile application
      • Summary
    • JavaScript interoperability
      • Setting up a project
      • Using libraries available for Kotlin/JS
      • Using Kotlin/JS
      • Building and linking a package
      • Distributing a package to npm
      • Exposing objects
      • Exposing Flow and StateFlow
      • Adding npm dependencies
      • Frameworks and libraries for Kotlin/JS
      • JavaScript and Kotlin/JS limitations
      • Summary
    • Reflection
      • Hierarchy of classes
      • Function references
      • Parameter references
      • Property references
      • Class reference
      • Serialization example
      • Referencing types
      • Type reflection example: Random value
      • Kotlin and Java reflection
      • Breaking encapsulation
      • Summary
    • Annotation processing
      • Your first annotation processor
      • Hiding generated classes
      • Summary
    • Kotlin Symbol Processing
      • Your first KSP processor
      • Testing KSP
      • Dependencies and incremental processing
      • Multiple rounds processing
      • Using KSP on multiplatform projects
      • Summary
    • Kotlin Compiler Plugins
      • Compiler frontend and backend
      • Compiler extensions
      • Popular compiler plugins
      • Making all classes open
      • Changing a type
      • Generate function wrappers
      • Example plugin implementations
      • Summary
    • Static Code Analysers
      • What are Static Analysers?
      • Types of analysers
      • Kotlin Code Analysers
      • Setting up detekt
      • Writing your first detekt Rule
      • Conclusion
    • Ending
  • Notes

The Leanpub 60-day 100% Happiness Guarantee

Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

See full terms

80% Royalties. Earn $16 on a $20 book.

We pay 80% royalties. That's not a typo: you earn $16 on a $20 sale. If we sell 5000 non-refunded copies of your book or course for $20, you'll earn $80,000.

(Yes, some authors have already earned much more than that on Leanpub.)

In fact, authors have earnedover $12 millionwriting, publishing and selling on Leanpub.

Learn more about writing on Leanpub

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!

Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.

Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.

Learn more about writing on Leanpub