Using fp-ts for Functional Programming in TypeScript

This course is a practical guide that explains the most important concepts of functional programming in understandable terms and shows how to actually use them.

Intermediate

111 Lessons

30h

Certificate of Completion

This course is a practical guide that explains the most important concepts of functional programming in understandable terms and shows how to actually use them.

AI-POWERED

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This course includes

112 Playgrounds

10 Quizzes

This course includes

112 Playgrounds

10 Quizzes

Course Overview

Functional programming is a programming paradigm that emphasizes immutability and pure functions. It not only makes code easier to understand, test, and parallelize, but also offers improved performance. TypeScript is a statically-typed object-oriented programming language that builds on JavaScript. Although TypeScript is not a purely functional programming language, it can be used to write functional code too. This course is for beginners with little to no knowledge of TypeScript and functional programmi...Show More

What You'll Learn

Familiarity with the concepts of functional programming

Working knowledge of functional JavaScript

An understanding of TypeScript’s type system

The ability to build your own projects using TypeScript

Hands-on experience with the fp-ts library

What You'll Learn

Familiarity with the concepts of functional programming

Course Content

Introduction to Functional Programming

Before We Dive Deeper

Why Functional Programming?

Why JavaScript?

Why TypeScript?

Functional Programming with TypeScript

Coding Challenge: Rewriting Function with Better Types

Solution Review: Rewriting Function with Better Types

Quiz on Types

Tidbits: Some Useful JavaScript and TypeScript

Setting Up TypeScript

Creating Functions in JavaScript

Backticks for Easy Printing

The Ternary Operator

Discriminating Unions

Summary: JavaScript and TypeScript Tidbits

Coding Challenge: Create Algebraic Data Type

Solution Review: Create Algebraic Data Type

Coding Challenge: Rewriting Code as an Expression

Solution Review: Rewriting Code as an Expression

Quiz: Tidbits of JavaScript and TypeScript

First Steps with Functional Programming

Introduction to Functional Programming

Writing Functional Code

Writing Functional Programs

Currying

Combining Currying and Composition

Problems with Currying and Composition

Monads

Advantages of Monads

Briefly about Types

Summary: First Steps with Functional Programming

Coding Challenge: Higher-Order Function

Solution Review: Higher-Order Function

Coding Challenge: Using Option in Function

Solution Review: Using Option in Function

Quiz: First Steps with Functional Programming

Our First Project: User Registration

Defining Our Types

Validation with Either

Before We Continue: Either or Validation?

Creating our User with Lifting

Bringing it Together

Cope with Changing Business Requirements

Summary: User Registration Project

Coding Challenge: Adding a Check

Solution Review: Adding a Check

Coding Challenge: Working with Either and Pipe

Solution Review: Working with Either and Pipe

Quiz: User Registration Project

Deploying a Monitoring Application

AWS Lambda and SAM

Setting Up Our Project

Using the Cloudwatch SDK

Monads for Asynchronous Behavior

Transforming Our Data

Synchronous Behavior and IO

Bringing it All Together

Extensions

A Small Aside: Memoization

Summary: Deploying a Monitoring Application

Coding Challenge: Working with Flow

Solution Review: Working with Flow

Coding Challenge: Working with TaskEither

Solution Review: Working with TaskEither

Quiz: Deploying a Monitoring Application

Testing

8 Lessons

Once More unto the Breach: Our Final Application

11 Lessons

Expanding our Reservation Application

10 Lessons

Rewriting an Application

11 Lessons

10.

Advanced FP Techniques

8 Lessons

11.

Conclusion

1 Lesson

12.

Appendix

1 Lesson

Course Author

Trusted by 1.4 million developers working at companies

Anthony Walker

@_webarchitect_

Evan Dunbar

ML Engineer

Carlos Matias La Borde

Software Developer

Souvik Kundu

Front-end Developer

Vinay Krishnaiah

Software Developer

Eric Downs

Musician/Entrepeneur

Kenan Eyvazov

DevOps Engineer

Souvik Kundu

Front-end Developer

Eric Downs

Musician/Entrepeneur

Anthony Walker

@_webarchitect_

Evan Dunbar

ML Engineer

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