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Mastering JavaScript Functional Programming

You're reading from   Mastering JavaScript Functional Programming Write clean, robust, and maintainable web and server code using functional JavaScript and TypeScript

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Product type Paperback
Published in Apr 2023
Publisher Packt
ISBN-13 9781804610138
Length 614 pages
Edition 3rd Edition
Languages
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Author (1):
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Federico Kereki Federico Kereki
Author Profile Icon Federico Kereki
Federico Kereki
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Toc

Table of Contents (17) Chapters Close

Preface 1. Chapter 1: Becoming Functional – Several Questions 2. Chapter 2: Thinking Functionally – A First Example FREE CHAPTER 3. Chapter 3: Starting Out with Functions – A Core Concept 4. Chapter 4: Behaving Properly – Pure Functions 5. Chapter 5: Programming Declaratively – A Better Style 6. Chapter 6: Producing Functions – Higher-Order Functions 7. Chapter 7: Transforming Functions – Currying and Partial Application 8. Chapter 8: Connecting Functions – Pipelining, Composition, and More 9. Chapter 9: Designing Functions – Recursion 10. Chapter 10: Ensuring Purity – Immutability 11. Chapter 11: Implementing Design Patterns – The Functional Way 12. Chapter 12: Building Better Containers – Functional Data Types 13. Answers to Questions 14. Bibliography
15. Index 16. Other Books You May Enjoy

Questions

5.1 Generating HTML code, with restrictions: Using the filter()map() reduce() sequence is quite common (even though sometimes you won’t use all three), and we’ll come back to this in the Functional design patterns section of Chapter 11, Implementing Design Patterns. The problem here is how to use those functions (and no others!) to produce an unordered list of elements (<ul>...</ul>) that can later be used onscreen. Your input is an array of characters such as the following (does the list date me?), and you must produce a list of each name that corresponds to chess or checkers players:

const characters = [
  { name: "Fred", plays: "bowling" },
  { name: "Barney", plays: "chess" },
  { name: "Wilma", plays: "bridge" },
  { name: "Betty", plays: "checkers" },
  .
  .
  .
 &...
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