Functional Thinking. Paradigm Over Syntax - Helion

ebook

Autor: Neal Ford
ISBN: 978-14-493-6547-9
stron: 180, Format: ebook
Data wydania: 2014-06-30
Księgarnia: Helion

Cena książki: 118,15 zł (poprzednio: 137,38 zł)
Oszczędzasz: 14% (-19,23 zł)

Osoby, które kupiły tę książkę, wybierały także »

If you’re familiar with functional programming basics and want to gain a much deeper understanding, this in-depth guide takes you beyond syntax and demonstrates how you need to think in a new way. Software architect Neal Ford shows intermediate to advanced developers how functional coding allows you to step back a level of abstraction so you can see your programming problem with greater clarity.

Each chapter shows you various examples of functional thinking, using numerous code examples from Java 8 and other JVM languages that include functional capabilities. This book may bend your mind, but you’ll come away with a much better grasp of functional programming concepts.

Understand why many imperative languages are adding functional capabilities
Compare functional and imperative solutions to common problems
Examine ways to cede control of routine chores to the runtime
Learn how memoization and laziness eliminate hand-crafted solutions
Explore functional approaches to design patterns and code reuse
View real-world examples of functional thinking with Java 8, and in functional architectures and web frameworks
Learn the pros and cons of living in a paradigmatically richer world

If you’re new to functional programming, check out Josh Backfield’s book Becoming Functional.

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Spis treści

Functional Thinking. Paradigm Over Syntax eBook -- spis treści

Functional Thinking
Preface
- Chapter Overview
- Conventions Used in This Book
- Using Code Examples
- Safari Books Online
- How to Contact Us
- Acknowledgments
1. Why
- Shifting Paradigms
- Aligning with Language Trends
- Ceding Control to the Language/Runtime
- Concision
2. Shift
- A Common Example
  - Imperative Processing
  - Functional Processing
- Case Study: Number Classification
  - Imperative Number Classification
  - Slightly More Functional Number Classification
  - Java 8 Number Classifier
  - Functional Java Number Classifier
- Common Building Blocks
  - Filter
  - Map
  - Fold/Reduce
- Synonym Suffering
  - Filter
    - Scala
    - Groovy
    - Clojure
  - Map
    - Scala
    - Groovy
    - Clojure
  - Fold/Reduce
    - Scala
    - Groovy
    - Clojure
3. Cede
- Iteration to Higher-Order Functions
- Closures
- Currying and Partial Application
  - Definitions and Distinctions
  - In Groovy
  - In Clojure
  - Scala
    - Currying
    - Partially applied functions
    - Partial (constrained) functions
  - Common Uses
    - Function factories
    - Template Method design pattern
    - Implicit values
- Recursion
  - Seeing Lists Differently
- Streams and Work Reordering
4. Smarter, Not Harder
- Memoization
  - Caching
    - Method-level caching
    - Caching sum
    - Caching everything
  - Adding Memoization
- Laziness
  - Lazy Iterator in Java
  - Totally Lazy Number Classifier
  - Lazy Lists in Groovy
    - Lazy list of perfect numbers
  - Building a Lazy List
  - Benefits of Laziness
  - Lazy Field Initialization
5. Evolve
- Few Data Structures, Many Operations
- Bending the Language Toward the Problem
- Rethinking Dispatch
  - Improving Dispatch with Groovy
  - Clojures Bendable Language
  - Clojure Multimethods and a la carte Polymorphism
- Operator Overloading
  - Groovy
  - Scala
- Functional Data Structures
  - Functional Error Handling
  - The Either Class
    - Parsing Roman numerals
    - Lazy parsing and Functional Java
    - Providing defaults
    - Wrapping exceptions
  - The Option Class
  - Either Trees and Pattern Matching
    - Scala pattern matching
    - Either trees
    - Pattern matching for tree traversal
6. Advance
- Design Patterns in Functional Languages
- Function-Level Reuse
  - Template Method
  - Strategy
  - The Flyweight Design Pattern and Memoization
  - Factory and Currying
- Structural Versus Functional Reuse
  - Code Reuse Via Structure
    - Refactoring to eliminate duplication
    - Code reuse via composition
7. Practical Thinking
- Java 8
  - Functional Interfaces
  - Optional
  - Java 8 Streams
- Functional Infrastructure
  - Architecture
    - CQRS
  - Web Frameworks
  - Databases
8. Polyglot and Polyparadigm
- Combining Functional with Metaprogramming
- Mapping Data Types with Metaprogramming
  - Infinite Streams with Functional Java and Groovy
- Consequences of Multiparadigm Languages
- Context Versus Composition
- Functional Pyramid
Index
Colophon
Copyright