Kotlin Blueprints : a practical guide to building industry-grade web, mobile, and desktop applications in Kotlin using frameworks such as Spring Boot and Node.js.

Kotlin is a powerful language that has applications in a wide variety of fields. It is a concise, safe, interoperable and tool-friendly language. The Android team has also announced first-class support for Kotlin, which is an added boost to the language. Through this book, you’ll get a deep under...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Ashish Belagali; Hardik Trivedi; Akshay Chordiya
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Birmingham, UNITED KINGDOM : Packt Publishing, 2017.
Temas:
Application software > Development.
Mobile apps > Development.
Logiciels d'application > Développement.
Applications mobiles > Développement.
COMPUTERS > Programming Languages > Java.
COMPUTERS > Programming > General.
COMPUTERS > Programming > Parallel.
Application software > Development
Acceso en línea:Texto completo
Tabla de Contenidos:
  • Cover
  • Title Page
  • Copyright
  • Credits
  • About the Authors
  • Acknowledgments
  • About the Reviewer
  • www.PacktPub.com
  • Customer Feedback
  • Table of Contents
  • Preface
  • Chapter 1: The Power of Kotlin
  • Kotlin
  • a better Java
  • Why not other languages?
  • Why Kotlin?
  • Concise yet expressive code
  • Enhanced robustness
  • Excellent IDE support from day one
  • Beyond being a better Java
  • Kotlin is in the winning camp
  • Go native strategy
  • Kotlin's winning strategy
  • Summary
  • Chapter 2: Geospatial Messenger
  • Spring Boot
  • Why Spring Boot?
  • Leveraging Kotlin in Spring Boot applications
  • Extension functions
  • Constructor injection
  • Leveraging Null safety
  • Functional bean declaration DSL
  • Let's build our geospatial messenger
  • Preview
  • Features
  • Architecture
  • Setting up the IDE
  • Creating a project
  • Project structure
  • Setting up the build script
  • Adding Kotlin dependency
  • Adding Spring Boot dependencies
  • Exposed library
  • Gradle dependency
  • Defining the table
  • Connecting to the database
  • CRUD operations
  • Explaining PostGIS
  • Installation
  • Gradle dependency
  • Object mapping
  • Gradle dependency
  • Completing the Gradle script
  • Coding the application
  • Frontend
  • HTML
  • CSS
  • JavaScript
  • Rendering the map
  • Plotting messages on the map
  • Listening to message saved events
  • Complete JavaScript
  • Application class
  • Backend
  • Application configuration
  • Data classes
  • Exposed integration
  • Exposed objects
  • Extras for geospatial support
  • Service/Controller
  • Repository
  • CrudRepository
  • Event broadcaster
  • Extension functions
  • Testing
  • Gradle dependency
  • Test cases
  • Pro-tips
  • All-open compiler plugin
  • Spring starter
  • Playing with the Java to Kotlin converter
  • Migrating to Kotlin
  • Should I rewrite the existing Java code in Kotlin?
  • What if I want to rewrite Java to Kotlin?
  • Summary
  • Chapter 3: Social Media Aggregator Android App
  • Setting up Kotlin
  • Setting up the Kotlin plugin for Android Studio
  • Getting started
  • Converting Java code to Kotlin code
  • Creating a social media aggregator
  • Using datatypes and conversion
  • String interpolation
  • String utility methods
  • Classes
  • Constructors
  • Data classes
  • Inheritance
  • Singletons
  • lateinit versus lazy initialization
  • lateinit
  • The lazy property
  • Control flow
  • The when() expression
  • Getters and setters
  • Declaring a property
  • Interfaces
  • Kotlin Android extension
  • Ditching the findViewById() method
  • View extensions
  • Fragment LayoutInflater extension
  • The Standard.kt function
  • The with() function
  • The apply() function
  • The let() function
  • Functions in Kotlin
  • Single-expression function
  • Inline function
  • Default and named parameters
  • Default parameter
  • Named parameter
  • Destructing declaration
  • Android context
  • Null-Safety
  • Why Kotlin is called null-safe
  • Safe call operator (?.)
  • Elvis operator (?:)
  • Force unwrap (!!)
  • Smart casts
  • The is and!is operators
  • The as operator
  • Companion object
  • Fragment instantiation using companion objects
  • Dealing with constants
  • Object expressions and declarations
  • Delegated properties
  • Dealing with Shared Preferences
  • Setting up an item click on RecyclerView
  • Anko
  • Kotlin's buddy for Android
  • Setting up Anko
  • Displaying toast()
  • Starting an activity made easy
  • Anko layout
  • Summary
  • Chapter 4: Weather App Using Kotlin for JavaScript
  • Creating your first Kotlin and JavaScript project
  • Choosing an IDE
  • Creating a project
  • Creating an HTML page
  • Creating a Main.kt file
  • Running the project
  • Developing a weather forecast web app
  • Creating a UI with dummy data.
  • Simple HTML approach
  • Creating UI using Kotlin
  • What is DSL?
  • Using Kotlinx.html
  • Refactoring the HTML code using DSL
  • Calling a weather API
  • Reading data from input elements
  • Data classes
  • Showing data to the user
  • Showing weather details
  • Named parameters
  • Extension functions
  • Giving final touches
  • Adding CSS
  • Interoperability with JavaScript
  • Summary
  • Chapter 5: Chat Application with Server-Side JavaScript Generation
  • Creating our first Node.js app using Kotlin
  • Choosing an IDE
  • Installing Node.js
  • Installing the Node.js plugin
  • Creating a project
  • Creating a chat application
  • Setting up the Node.js server
  • Specifying the output files
  • Examining the compilation output
  • Specifying the router
  • Starting the node server
  • Creating a login page
  • Creating an index.ejs file
  • Using DSL
  • Using kotlinx.html
  • Lambda functions
  • Reading the nickname
  • Passing nickname to the server
  • Smart cast
  • Registering a callback
  • Establishing a socket connection
  • Setting up Socket. IO
  • Listening to events
  • Emitting the event
  • Incrementing and decrementing operator overloading
  • Showing a list of online users
  • Using the data class
  • Using the Pair class
  • Iterating list
  • Sending and receiving a message
  • Null safety
  • Force unwraps
  • Using the let function
  • Named parameter
  • Disconnecting a socket
  • Styling the page using CSS
  • Summary
  • Chapter 6: News Feed
  • REST API
  • What is REST?
  • What is Ktor?
  • Why Ktor?
  • Understanding unopinionated applications
  • Asynchronous nature
  • Highly testable
  • Deploying the Ktor app
  • Let's build our news application
  • News provider
  • Fetching news sources
  • Fetching news articles
  • Preview
  • Features
  • Architecture
  • Setting up the IDE
  • Prerequisites
  • Creating the project
  • Project structure
  • Deploying.
  • Deploying in IntelliJ IDEA
  • Setting up the build script
  • Adding Kotlin dependency
  • Adding Ktor dependencies
  • Configuring logging
  • Adding Fuel
  • What is Fuel?
  • Adding Gradle dependency
  • Quick sample
  • Asynchronous mode
  • Blocking mode
  • Completing Gradle script
  • Let's code!
  • Application configuration
  • Deployment block
  • Application block
  • Application main
  • Installing routing
  • Simple routing
  • Modular routing
  • Understanding route paths
  • Path parameters
  • Testing
  • Adding Gradle dependency
  • Testing the application
  • Testing the index URL
  • Testing JSON using Postman
  • Testing news sources using Postman
  • Testing news sources using Postman
  • Summary
  • Chapter 7: CSV Reader in Kotlin Native
  • What is Kotlin Native?
  • Target platforms
  • Multiplatform Kotlin
  • Installing Kotlin Native
  • Installing from the source
  • Installing from binaries
  • Testing the installation
  • Memory management
  • Building our app
  • Writing the main function
  • Reading command-line arguments
  • Opening the file
  • Reading the file contents
  • Counting unique entries
  • Converting to Kotlin string
  • Splitting strings
  • Printing the result
  • Complete code
  • Running the program
  • Understanding the dataset
  • Compiling the program
  • Executing the program
  • Multiplatform Kotlin
  • Project structure
  • Common module
  • Platform module
  • Regular module
  • Overview of the dependency structure
  • Setting up a multiplatform project
  • Creating a multiplatform project with an IDE
  • Creating a multiplatform project without an IDE
  • Summary
  • Chapter 8: Dictionary Desktop Application
  • TornadoFX
  • Introducing TornadoFX
  • Java-based desktop frameworks
  • TornadoFX special additions
  • Creating a type-safe UI versus FXML
  • Type-safe styling
  • Other improvements
  • Let's build our dictionary application
  • What we will build.
  • Words API
  • Definition API
  • Features of our application
  • Setting up the IDE
  • Prerequisites
  • Installing the TornadoFX plugin
  • Creating the project
  • Project structure
  • Let's code!
  • Application class
  • Type-safe CSS
  • Dependency injection
  • Property delegate
  • Consuming the REST API
  • Defining the Model
  • Implementing the JSONModel interface
  • REST client
  • Configuring the client
  • Controllers
  • Views
  • Layouts
  • VBox layout
  • HBox layout
  • Other layouts
  • Forms
  • Background operations
  • Printing the result
  • Complete View
  • Launching the application
  • Summary
  • Index.

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