A Functional Approach to Java : augmenting object-oriented Java code with functional principles

A Functional Approach to Java augmenting object-oriented Java code with functional principles

Java developers usually tackle the complexity of software development through object-oriented programming (OOP). But not every problem is a good match for OOP. The functional programming (FP) paradigm offers you another approach to solving problems, and Java provides easy-to-grasp FP tools such as l...

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Detalles Bibliográficos
Otros Autores: Weidig, Ben, author (author)
Formato: Libro electrónico
Idioma:Inglés
Publicado: Sebastopol, CA : O'Reilly Media 2023.
Edición:First edition
Materias:
Functional programming (Computer science)
Java (Computer program language)
Object-oriented programs (Computer programs)
Ver en Biblioteca Universitat Ramon Llull:https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009742724106719
Tabla de Contenidos:
  • Intro
  • Copyright
  • Table of Contents
  • Preface
  • New Hardware Needs a New Way of Thinking
  • Java Can Be Functional, Too
  • Why I Wrote This Book
  • Who Should Read This Book
  • What You Will Learn
  • What about Android?
  • A Functional Approach to Android
  • Navigating This Book
  • Conventions Used in This Book
  • Using Code Examples
  • O'Reilly Online Learning
  • Acknowledgments
  • Part I. Functional Basics
  • Chapter 1. An Introduction to Functional Programming
  • What Makes a Language Functional?
  • Functional Programming Concepts
  • Pure Functions and Referential Transparency
  • Immutability
  • Recursion
  • First-Class and Higher-Order Functions
  • Functional Composition
  • Currying
  • Partial Function Application
  • Lazy Evaluation
  • Advantages of Functional Programming
  • Disadvantages of Functional Programming
  • Takeaways
  • Chapter 2. Functional Java
  • What Are Java Lambdas?
  • Lambda Syntax
  • Functional Interfaces
  • Lambdas and Outside Variables
  • What about Anonymous Classes?
  • Lambdas in Action
  • Creating Lambdas
  • Calling Lambdas
  • Method References
  • Functional Programming Concepts in Java
  • Pure Functions and Referential Transparency
  • Immutability
  • First-Class Citizenship
  • Functional Composition
  • Lazy Evaluation
  • Takeaways
  • Chapter 3. Functional Interfaces of the JDK
  • The Big Four Functional Interface Categories
  • Functions
  • Consumers
  • Suppliers
  • Predicates
  • Why So Many Functional Interface Variants?
  • Function Arity
  • Primitive Types
  • Bridging Functional Interfaces
  • Functional Composition
  • Extending Functional Support
  • Adding Default Methods
  • Implementing Functional Interfaces Explicitly
  • Creating Static Helpers
  • Takeaways
  • Part II. A Functional Approach
  • Chapter 4. Immutability
  • Mutability and Data Structures in OOP
  • Immutability (Not Only) in FP
  • The State of Java Immutability
  • java.lang.String
  • Immutable Collections
  • Primitives and Primitive Wrappers
  • Immutable Math
  • Java Time API (JSR-310)
  • Enums
  • The final Keyword
  • Records
  • How to Achieve Immutability
  • Common Practices
  • Takeaways
  • Chapter 5. Working with Records
  • Data Aggregation Types
  • Tuples
  • A Simple POJO
  • From POJO to Immutability
  • From POJO to Record
  • Records to the Rescue
  • Behind the Scenes
  • Record Features
  • Missing Features
  • Use Cases and Common Practices
  • Record Validation and Data Scrubbing
  • Increasing Immutability
  • Creating Modified Copies
  • Records as Local Nominal Tuples
  • Better Optional Data Handling
  • Serializing Evolving Records
  • Record Pattern Matching (Java 19+)
  • Final Thoughts on Records
  • Takeaways
  • Chapter 6. Data Processing with Streams
  • Data Processing with Iteration
  • External Iteration
  • Internal Iteration
  • Streams as Functional Data Pipelines
  • Stream Features
  • Spliterator, the Backbone of Streams
  • Building Stream Pipelines
  • Creating a Stream
  • Doing the Work
  • Terminating the Stream

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