Kotlin Cookbook A Problem Focused Approach 1st Edition by Ken Kousen 1492046671 9781492046677

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Product details:

ISBN 10: 1492046671 

ISBN 13: 9781492046677

Author: Ken Kousen

Use Kotlin to build Android apps, web applications, and more—while you learn the nuances of this popular language. With this unique cookbook, developers will learn how to apply thisJava-based language to their own projects. Both experienced programmers and those new to Kotlin will benefit from the practical recipes in this book. Author Ken Kousen (Modern Java Recipes) shows you how to solve problems with Kotlin by concentrating on your own use cases rather than on basic syntax. You provide the contextand this book supplies the answers. Already big in Android development, Kotlin can be used anywhere Java is applied, as well as for iOS development, native applications, JavaScriptgeneration, and more. Jump in and build meaningful projects with Kotlin today. Apply functional programming concepts, including lambdas, sequences, and concurrency See how to use delegates, late initialization, and scope functions Explore Java interoperability and access Java libraries using Kotlin Add your own extension functions Use helpful libraries such as JUnit 5 Get practical advice for working with specific frameworks, like Android and Spring

Table of contents:

1. Installing and Running Kotlin

1.1. Running Kotlin Without a Local Compiler

1.2. Installing Kotlin Locally

1.3. Compiling and Running Kotlin from the Command Line

1.4. Using the Kotlin REPL

1.5. Executing a Kotlin Script

1.6. Building a Standalone Application Using GraalVM

1.7. Adding the Kotlin Plug-in for Gradle (Groovy Syntax)

1.8. Adding the Kotlin Plug-in for Gradle (Kotlin Syntax)

1.9. Using Gradle to Build Kotlin Projects

1.10. Using Maven with Kotlin

2. Basic Kotlin

2.1. Using Nullable Types in Kotlin

2.2. Adding Nullability Indicators to Java

2.3. Adding Overloaded Methods for Java

2.4. Converting Between Types Explicitly

2.5. Printing to Different Bases

2.6. Raising a Number to a Power

2.7. Using Bitwise Shift Operators

2.8. Using Bitwise Boolean Operators

2.9. Creating Pair Instances with to

3. Object-Oriented Programming in Kotlin

3.1. Understanding the Difference Between const and val

3.2. Creating Custom Getters and Setters

3.3. Defining Data Classes

3.4. The Backing Property Technique

3.5. Overloading Operators

3.6. Using lateinit for Delayed Initialization

3.7. Using Safe Casting, Reference Equality, and Elvis to Override equals

3.8. Creating a Singleton

3.9. Much Ado About Nothing

4. Functional Programming

4.1. Using fold in Algorithms

4.2. Using the reduce Function for Reductions

4.3. Applying Tail Recursion

5. Collections

5.1. Working with Arrays

5.2. Creating Collections

5.3. Creating Read-Only Views from Existing Collections

5.4. Building a Map from a Collection

5.5. Returning a Default When a Collection Is Empty

5.6. Restricting a Value to a Given Range

5.7. Processing a Window on a Collection

5.8. Destructuring Lists

5.9. Sorting by Multiple Properties

5.10. Defining Your Own Iterator

5.11. Filtering a Collection by Type

5.12. Making a Range into a Progression

6. Sequences

6.1. Using Lazy Sequences

6.2. Generating Sequences

6.3. Managing Infinite Sequences

6.4. Yielding from a Sequence

7. Scope Functions

7.1. Initializing Objects After Construction with apply

7.2. Using also for Side Effects

7.3. Using the let Function and Elvis

7.4. Using let with a Temporary Variable

8. Kotlin Delegates

8.1. Implementing Composition by Delegation

8.2. Using the lazy Delegate

8.3. Ensuring That a Value Is Not Null

8.4. Using the observable and vetoable Delegates

8.5. Supplying Maps as Delegates

8.6. Creating Your Own Delegates

9. Testing

9.1. Setting the Test Class Life Cycle

9.2. Using Data Classes for Tests

9.3. Using Helper Functions with Default Arguments

9.4. Repeating JUnit 5 Tests with Different Data

9.5. Using Data Classes for Parameterized Tests

10. Input/Output

10.1. Managing Resources with use

10.2. Writing to a File

11. Miscellaneous

11.1. Working with the Kotlin Version

11.2. Executing a Lambda Repeatedly

11.3. Forcing when to Be Exhaustive

11.4. Using the replace Function with Regular Expressions

11.5. Converting to Binary String and Back

11.6. Making a Class Executable

11.7. Measuring Elapsed Time

11.8. Starting Threads

11.9. Forcing Completion with TODO

11.10. Understanding the Random Behavior of Random

11.11. Using Special Characters in Function Names

11.12. Telling Java About Exceptions

12. The Spring Framework

12.1. Opening Spring-Managed Bean Classes for Extension

12.2. Persisting Kotlin Data Classes

12.3. Injecting Dependencies

13. Coroutines and Structured Concurrency

13.1. Choosing Coroutine Builders

13.2. Replacing async/await with withContext

13.3. Working with Dispatchers

13.4. Running Coroutines on a Java Thread Pool

13.5. Cancelling Coroutines

13.6. Debugging Coroutines

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Tags: Ken Kousen, Kotlin, Cookbook, Focused, Problem