Kotlin Coroutines by Tutorials (Third Edition)


Book Description

Learn coroutines!Executing background tasks has always been a big challenge in every environment and, in particular, on mobile devices where resources are limited. Kotlin has simplified the way you can write code improving your productivity with a new programming paradigm, enhancing object-oriented and functional programming with simple, powerful and new constructs. Coroutines are one of these!Who This Book Is ForThis book is for intermediate Kotlin or Android developers who already know the basics of UI development but want to learn coroutine API to simplify and optimize their code.Topics Covered in this BookAsynchronous programming: Learn what asynchronous programming means and how to achieve it using not blocking calls.Configuration: Learn how to configure IntelliJ and Android Studio to use Coroutine APIsCoroutine principles: Learn what coroutines and launching builders are and how to manage Job dependencies. Suspending functions: This is the main concept around coroutines and you'll learn how to declare a suspending function and how to deal with results Sequences and Iterators: Learn how to manage theoretically infinite collections of data in an efficient way using Sequences, Iterators and the yield function. Thread communication techniques: Learn how different tasks can communicate using Channels, Flow, and specific coroutine operators.And much more, including benchmarks, Broadcast Channels, Flow!One thing you can count on: After reading this book, you'll be prepared to take advantage of all the improvements coroutines have to offer!




Kotlin Apprentice (Second Edition)


Book Description




Android Programming with Kotlin for Beginners


Book Description

Build smart looking Kotlin apps with UI and functionality for the Android platform Key FeaturesStart your Android programming career, or just have fun publishing apps on Google Play marketplaceThe first-principle introduction to Kotlin through Android, to start building easy-to-use appsLearn by example and build four real-world apps and dozens of mini-appsBook Description Android is the most popular mobile operating system in the world and Kotlin has been declared by Google as a first-class programming language to build Android apps. With the imminent arrival of the most anticipated Android update, Android 10 (Q), this book gets you started building apps compatible with the latest version of Android. It adopts a project-style approach, where we focus on teaching the fundamentals of Android app development and the essentials of Kotlin by building three real-world apps and more than a dozen mini-apps. The book begins by giving you a strong grasp of how Kotlin and Android work together before gradually moving onto exploring the various Android APIs for building stunning apps for Android with ease. You will learn to make your apps more presentable using different layouts. You will dive deep into Kotlin programming concepts such as variables, functions, data structures, Object-Oriented code, and how to connect your Kotlin code to the UI. You will learn to add multilingual text so that your app is accessible to millions of more potential users. You will learn how animation, graphics, and sound effects work and are implemented in your Android app. By the end of the book, you will have sound knowledge about significant Kotlin programming concepts and start building your own fully featured Android apps. What you will learnLearn how Kotlin and Android work togetherBuild a graphical drawing app using Object-Oriented Programming (OOP) principlesBuild beautiful, practical layouts using ScrollView, RecyclerView, NavigationView, ViewPager and CardViewWrite Kotlin code to manage an apps' data using different strategies including JSON and the built-in Android SQLite databaseAdd user interaction, data captures, sound, and animation to your appsImplement dialog boxes to capture input from the userBuild a simple database app that sorts and stores the user's dataWho this book is for This book is for people who are new to Kotlin, Android and want to develop Android apps.It also acts as a refresher for those who have some experience in programming with Android and Kotlin.




Kotlin in Action


Book Description

Summary Kotlin in Action guides experienced Java developers from the language basics of Kotlin all the way through building applications to run on the JVM and Android devices. Foreword by Andrey Breslav, Lead Designer of Kotlin. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Developers want to get work done - and the less hassle, the better. Coding with Kotlin means less hassle. The Kotlin programming language offers an expressive syntax, a strong intuitive type system, and great tooling support along with seamless interoperability with existing Java code, libraries, and frameworks. Kotlin can be compiled to Java bytecode, so you can use it everywhere Java is used, including Android. And with an effi cient compiler and a small standard library, Kotlin imposes virtually no runtime overhead. About the Book Kotlin in Action teaches you to use the Kotlin language for production-quality applications. Written for experienced Java developers, this example-rich book goes further than most language books, covering interesting topics like building DSLs with natural language syntax. The authors are core Kotlin developers, so you can trust that even the gnarly details are dead accurate. What's Inside Functional programming on the JVM Writing clean and idiomatic code Combining Kotlin and Java Domain-specific languages About the Reader This book is for experienced Java developers. About the Author Dmitry Jemerov and Svetlana Isakova are core Kotlin developers at JetBrains. Table of Contents PART 1 - INTRODUCING KOTLIN Kotlin: what and why Kotlin basics Defining and calling functions Classes, objects, and interfaces Programming with lambdas The Kotlin type system PART 2 - EMBRACING KOTLIN Operator overloading and other conventions Higher-order functions: lambdas as parameters and return values Generics Annotations and reflection DSL construction




Hands-On Object-Oriented Programming with Kotlin


Book Description

Learn everything you need to know about object-oriented programming with the latest features of Kotlin 1.3 Key FeaturesA practical guide to understand objects and classes in KotlinLearn to write asynchronous, non-blocking codes with Kotlin coroutinesExplore Encapsulation, Inheritance, Polymorphism, and Abstraction in KotlinBook Description Kotlin is an object-oriented programming language. The book is based on the latest version of Kotlin. The book provides you with a thorough understanding of programming concepts, object-oriented programming techniques, and design patterns. It includes numerous examples, explanation of concepts and keynotes. Where possible, examples and programming exercises are included. The main purpose of the book is to provide a comprehensive coverage of Kotlin features such as classes, data classes, and inheritance. It also provides a good understanding of design pattern and how Kotlin syntax works with object-oriented techniques. You will also gain familiarity with syntax in this book by writing labeled for loop and when as an expression. An introduction to the advanced concepts such as sealed classes and package level functions and coroutines is provided and we will also learn how these concepts can make the software development easy. Supported libraries for serialization, regular expression and testing are also covered in this book. By the end of the book, you would have learnt building robust and maintainable software with object oriented design patterns in Kotlin. What you will learnGet an overview of the Kotlin programming languageDiscover Object-oriented programming techniques in Kotlin Understand Object-oriented design patternsUncover multithreading by Kotlin wayUnderstand about arrays and collectionsUnderstand the importance of object-oriented design patternsUnderstand about exception handling and testing in OOP with KotlinWho this book is for This book is for programmers and developers who wish to learn Object-oriented programming principles and apply them to build robust and scalable applications. Basic knowledge in Kotlin programming is assumed




Using Asyncio in Python


Book Description

If you’re among the Python developers put off by asyncio’s complexity, it’s time to take another look. Asyncio is complicated because it aims to solve problems in concurrent network programming for both framework and end-user developers. The features you need to consider are a small subset of the whole asyncio API, but picking out the right features is the tricky part. That’s where this practical book comes in. Veteran Python developer Caleb Hattingh helps you gain a basic understanding of asyncio’s building blocks—enough to get started writing simple event-based programs. You’ll learn why asyncio offers a safer alternative to preemptive multitasking (threading) and how this API provides a simpleway to support thousands of simultaneous socket connections. Get a critical comparison of asyncio and threading for concurrent network programming Take an asyncio walk-through, including a quickstart guidefor hitting the ground looping with event-based programming Learn the difference between asyncio features for end-user developers and those for framework developers Understand asyncio’s new async/await language syntax, including coroutines and task and future APIs Get detailed case studies (with code) of some popular asyncio-compatible third-party libraries




Kotlin in Action, Second Edition


Book Description

Expert guidance and amazing examples from Kotlin core developers! It’s everything you need to get up and running fast. Kotlin in Action, Second Edition takes you from language basics to building production-quality applications that take advantage of Kotlin’s unique features. Discover how the language handles everything from statements and functions to classes and types, and the unique features that make Kotlin programming so seamless. In Kotlin in Action, Second Edition you will learn: Kotlin statements and functions, and classes and types Functional programming on the JVM The Kotlin standard library and out-of-the-box features Writing clean and idiomatic code Combining Kotlin and Java Improve code reliability with null safety Domain-specific languages Kotlin coroutines and flows Mastering the kotlinx.coroutines library Kotlin in Action, Second Edition is a complete guide to the Kotlin language written especially for readers familiar with Java or another OO language. Its authors—all core Kotlin language developers and Kotlin team members—share their unique insights, along with practical techniques and hands-on examples. This new second edition is fully updated to include the latest innovations, and it adds new chapters dedicated to coroutines, flows, and concurrency. About the technology Kotlin is a low-hassle, high-productivity programming language flexible enough to handle any web, mobile, cloud, and enterprise application. Java developers will appreciate the simple syntax, intuitive type system, excellent tooling, and support for functional-style programming. Plus, since Kotlin runs on the JVM, it integrates seamlessly with existing Java code, libraries, and frameworks, including Spring and Android. About the book Kotlin in Action, Second Edition teaches you Kotlin techniques you can use for almost any type of application, from enterprise services to Android apps. The authors are all members of the Kotlin team, so you can trust that even the gnarly details are dead accurate. You’ll start with Kotlin fundamentals, learning how the language handles everything from statements and functions to classes and types, and about its unique features that make Kotlin programming so seamless. As you progress through this masterful book, you’ll get hands-on with the Kotlin standard library, functional programming in Kotlin, and advanced features such as generics and reflection. And this updated second edition now covers coroutines and structured concurrency to help you create efficient high-performance applications. What's inside Guidance from members of the Kotlin team Domain-specific languages Kotlin coroutines and flows About the reader For readers familiar with Java or another OO language. About the author Sebastian Aigner is a Developer Advocate at JetBrains, and host of the Talking Kotlin podcast. Roman Elizarov was the lead designer of the Kotlin language. JetBrains Developer Advocate, Svetlana Isakova, was a member of the Kotlin compiler team. Dmitry Jemerov is one of Kotlin’s initial developers.




Head First Kotlin


Book Description

What will you learn from this book? Head First Kotlin is a complete introduction to coding in Kotlin. This hands-on book helps you learn the Kotlin language with a unique method that goes beyond syntax and how-to manuals and teaches you how to think like a great Kotlin developer. You’ll learn everything from language fundamentals to collections, generics, lambdas, and higher-order functions. Along the way, you’ll get to play with both object-oriented and functional programming. If you want to really understand Kotlin, this is the book for you. Why does this book look so different? Based on the latest research in cognitive science and learning theory, Head First Kotlin uses a visually rich format to engage your mind rather than a text-heavy approach that puts you to sleep. Why waste your time struggling with new concepts? This multisensory learning experience is designed for the way your brain really works.




Learn Kotlin for Android Development


Book Description

Build Android apps and learn the essentials of the popular Kotlin programming language and APIs. This book will teach you the key Kotlin skills and techniques important for creating your very own Android apps. Apart from introducing Kotlin programming, Learn Kotlin for Android Development stresses clean code principles and introduces object-oriented and functional programming as a starting point for developing Android apps. After reading and using this book, you'll have a foundation to take away and apply to your own Kotlin-based Android app development. You'll be able to write useful and efficient Kotlin-based apps for Android, using most of the features Kotlin as a language has to offer. What You Will Learn Build your first Kotlin app that runs on Android Work with Kotlin classes and objects for Android Use constructs, loops, decisions, and scopes Carry out operations on data Master data containers, arrays, and collections Handle exceptions and access external libraries Who This Book Is For Very little programming experience is required: no prior knowledge of Kotlin needed.