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Using fp-ts for Functional Programming in TypeScript

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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

The Types of Testing Test-Driven Development FP and Testing Property-based Testing Summary: Testing Coding Challenge: Writing a Parameterized Test Solution Review: Writing a Parameterized Test Quiz: Testing

Once More unto the Breach: Our Final Application

Setting Up the Environment of Our Final Application Writing Our First Create Lambda Code Core Logic of the Create Lambda Bringing it Together Creating the Retrieve Lambda DynamoDB Adding the Real Database Summary: Final Application Coding Challenge: Using Sequence in Function Solution Review: Using Sequence in Function Quiz: Testing

Expanding our Reservation Application

Using the Reader Monad to Gather Config Using State Better Error Types Restaurants and sequenceS Choosing Configs Exploring Some More Ideas Summary: Expanding our Reservation Application Coding Challenge: Using Reader Monad in Function Solution Review: Using Reader Monad in Function Quiz Yourself about Reservation Application

Rewriting an Application

The Original Application

Improvements Overview

Our New Code Setup

Dealing with the Asynchronous Calls

Advantages of Our Functional Approach

Summary: Rewriting an Application

Coding Challenge: Writing Function Using Switch

Solution Review: Writing Function Using Switch

Quiz Yourself on the Application

Advanced FP Techniques

Domain-Specific Language Tagless Final Free Monads Executable and Declarative Encoding and Algebraic Design Summary: Advanced FP Techniques Coding Challenge: Create a Mini DSL Solution Review: Create a Mini DSL Quiz Yourself on Advanced FP Techniques

Conclusion

Closing Thoughts

Appendix

Additional Concepts

Solution Review: Writing Function Using Switch

Learn to write a function using a switch statement.

We'll cover the following

Solution
Explanation

Solution

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