If you're looking to write responsive Android and web applications using Kotlin 2.0, this book's got you covered with some great examples. In the early chapters, you'll dive into the basics of variables, data types, and control structures like if-else, when, while, and do-while.

There's a chapter on functions that'll teach you to write reusable code, use higher-order functions, and adopt lambda expressions to streamline operations in the project. As you move into object-oriented constructs, you'll learn to define classes, primary and secondary constructors, inheritance, interfaces, and encapsulation practices that keep internal task details safe and modular. Then, we'll dive into collection handling, where we'll use lists, arrays, sets, and maps along with some handy code that'll filter, transform, and iterate through tasks. In the state management section, you'll see how immutable snapshots and mutable services work together using observers to sync components in real time. The chapters on functional programming will walk you through chaining, mapping, and flattening data pipelines. The error handling and type casting chapters will show you how to catch and log exceptions, apply safe casts, and recover from unexpected conditions without crashing.

If one wants to get really into JSON serialization, it's possible to learn how to parse JSON into Kotlin objects, serialize tasks back into JSON, and use libraries like kotlinx.serialization or Moshi for nested structures. Finally, Ktor integration teaches you to initialize a coroutine-based server, define routes, install middleware, secure endpoints with authentication, and test your components thoroughly. This book won't turn you into a Kotlin master overnight, but it'll give you the confidence and hands-on experience you need to build real-world Android and web apps with Kotlin 2.0 right from the start.

Key Learnings

Build strong foundation in Kotlin 2.0 syntax to write clear, concise code.
Absorb strong designing principles including classes, constructors, inheritance, and encapsulation for robust design.
Gain practical mastery in using lists, arrays, sets, and maps to store, filter, and transform the data efficiently.
Strong hold on coroutine-based state management and observer patterns for responsive, synchronized application behavior.
Develop fluency in functional programming alongwith lambdas to process data pipelines succinctly.
Perform JSON parsing and serialization using kotlinx.serialization, Moshi, and Jackson.
Practical implementation of Ktor’s routing, plugins, middleware, and testing for web server development.
Streamlined testing and debugging workflow, combining in-memory tests, logging, and profiling to catch issues.

Table of Content

Up and Running with Kotlin 2.0
Variables, Data Types, and Basic Operations
Control Structures and Program Flow
Functions and Modular Programming Techniques
Object-Oriented Constructs and Class Design
Collection Handling and Iteration Patterns
Managing Application State and Behavior
Functional Programming with Lambdas
Error Handling and Type Casting
Handling JSON and Data Serialization
Designing RESTful API
Building Web Server with Ktor

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BuchWeltWeit Ludwig Meier e.K.
Germany

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