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

Advanced beginner

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

CONCEPTS SKILLS
  • Algebraic data types
  • Pattern matching
  • Parametric polymorphism
  • General recursion
  • Type classes, instances, and laws
  • Lower-order abstractions (equal, semigroup, monoid, and so on)
  • Referential transparency and totality
  • Higher-order functions
  • Partial application, currying, and point-free style
  • Solve problems without nulls, exceptions, or type casts
  • Process and transform recursive data structures using recursion
  • Able to use functional programming in the small
  • Write basic monadic code for a concrete monad
  • Create type class instances for custom data types
  • Model a business domain with abstract data types (ADTs)
  • Write functions that take and return functions
  • Reliably identify and isolate pure code from impure code
  • Avoid introducing unnecessary lambdas...