Hands-On Design Patterns with Kotlin : Build Scalable Applications Using Traditional, Reactive, and Concurrent Design Patterns in Kotlin.

Cover; Title Page; Copyright and Credits; Dedication; Packt Upsell; Contributors; Table of Contents; Preface; Chapter 1: Getting Started with Kotlin; Basic language syntax and features; Multi-paradigm; Code structure; No semicolons; Naming conventions; Packages; Types; Type inference; val versus var; Comparison; Null safety; Declaring functions; Control flow; Using the if expression; Using the when expression; String interpolation; Classes and inheritance; Classes; Inheritance; Constructors; Properties; Data classes; More control flow
loops; The for loop; For-each loop; While loop.

Extension functionsIntroduction to design patterns; What are design patterns?; Design patterns in real life; Design process; Why use design patterns in Kotlin?; Summary; Chapter 2: Working with Creational Patterns; Singleton; Factory Method; Factory; Static Factory Method; Advantages of the Static Factory Method; Caching; Subclassing; Static Factory Method in Kotlin; Companion object; Abstract Factory; Abstract Factory in action; Introduction to generics in Kotlin; Back to our bases; Making improvements; Builder; Composing an email; Collection types in Kotlin.

Creating an email
first attemptCreating an email
second attempt; Creating an email
the Kotlin way; Creating an email
the Kotlin way
second attempt; Prototype; Building your own PC; Starting from a prototype; Summary; Chapter 3: Understanding Structural Patterns; Decorator; Enhancing a class; Operator overloading; Dude, where's my map?; The great combinator; Caveats; Adapter; Different adapters; Adapters in the real world; Caveats of using adapters; Bridge; Bridging changes; Type aliases; You're in the army now; Constants; A lethal weapon; Composite; Get together; The Squad.

Varargs and secondary constructorsCounting bullets; Facade; Keep it simple; Flyweight; Being conservative; Saving memory; Proxy; A short detour into the RMI world; A replacement; Lazy delegation; Summary; Chapter 4: Getting Familiar with Behavioral Patterns; Strategy; Fruit arsenal; Citizen function; Switching sides; Iterator; One, two ... many; Running through the values; State; Fifty shades of State; State of the Nation; Command; Undoing commands; Chain of responsibility; Interpreter; We need to go deeper; A language of your own; Taking a break; Call suffix; Mediator; Trouble in the Jungle.

The middlemanFlavors; Caveats; Memento; Remembrance; Visitor; Writing a crawler; Template method; Observer ; Animal Choir; Summary; Chapter 5: Functional Programming; Why functional programming?; Immutability; Tuples; Value mutation; Immutable collections; Functions as values; Higher-order functions; Pure functions; Currying; Memoization; Expressions, not statements; Pattern matching; Recursion; Summary; Chapter 6: Streaming Your Data; The it notation; The map() function; Filter family; Find family; Drop family; Sort family; ForEach; Join family; Fold/Reduce; Flat family; Slice; Chunked.