Book Image

Hands-On Functional Programming with TypeScript

By : Remo H. Jansen
Book Image

Hands-On Functional Programming with TypeScript

By: Remo H. Jansen

Overview of this book

Functional programming is a powerful programming paradigm that can help you to write better code. However, learning functional programming can be complicated, and the existing literature is often too complex for beginners. This book is an approachable introduction to functional programming and reactive programming with TypeScript for readers without previous experience in functional programming with JavaScript, TypeScript , or any other programming language. The book will help you understand the pros, cons, and core principles of functional programming in TypeScript. It will explain higher order functions, referential transparency, functional composition, and monads with the help of effective code examples. Using TypeScript as a functional programming language, you’ll also be able to brush up on your knowledge of applying functional programming techniques, including currying, laziness, and immutability, to real-world scenarios. By the end of this book, you will be confident when it comes to using core functional and reactive programming techniques to help you build effective applications with TypeScript.
Table of Contents (14 chapters)
5
The Runtime – Closures and Prototypes

Intermediate

To reach the intermediate level, you will need to master the following concepts and skills:

CONCEPTS SKILLS
  • Generalized algebraic data type
  • Higher-kinded types
  • Rank-N types
  • Folds and unfolds
  • Higher-order abstractions (category, functor, monad)
  • Basic optics
  • Implement efficient persistent data structures
  • Existential types
  • Embedded DSLs using combinators
  • Able to implement large functional programming applications
  • Test code using generators and properties
  • Write imperative code in a purely functional way through monads
  • Use popular purely functional libraries to solve business problems
  • Separate decision from effects
  • Write a simple custom lawful monad
  • Write production medium-sized projects
  • Use lenses and prisms to manipulate data
  • Simplify types by hiding irrelevant data with existential