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ReasonML Quick Start Guide

ReasonML Quick Start Guide

By : Rafatpanah, Joseph D'mello
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ReasonML Quick Start Guide

ReasonML Quick Start Guide

By: Rafatpanah, Joseph D'mello

Overview of this book

ReasonML, also known as Reason, is a new syntax and toolchain for OCaml that was created by Facebook and is meant to be approachable for web developers. Although OCaml has several resources, most of them are from the perspective of systems development. This book, alternatively, explores Reason from the perspective of web development. You'll learn how to use Reason to build safer, simpler React applications and why you would want to do so. Reason supports immutability by default, which works quite well in the context of React. In learning Reason, you will also learn about its ecosystem – BuckleScript, JavaScript interoperability, and various npm workflows. We learn by building a real-world app shell, including a client-side router with page transitions, that we can customize for any Reason project. You'll learn how to leverage OCaml's excellent type system to enforce guarantees about business logic, as well as preventing runtime type errors.You'll also see how the type system can help offload concerns that we once had to keep in our heads. We'll explore using CSS-in-Reason, how to use external JSON in Reason, and how to unit-test critical business logic. By the end of the book, you'll understand why Reason is exploding in popularity and will have a solid foundation on which to continue your journey with Reason.
Table of Contents (10 chapters)
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BuckleScript, Belt, and Interoperability

In this chapter, we'll take a closer look at the BuckleScript-specific features that are available to us. We'll also learn about recursion and recursive data structures. By the end of this chapter, we'll have come full circle in the introduction to Reason and its ecosystem. In doing so, we'll have done the following:

  • Learned more about Reason's module system
  • Explored more of Reason's primitive data structures (arrays and lists)
  • Seen how the various pipe operators can make code more readable
  • Become familiar with the Reason and Belt standard libraries
  • Created bindings to a JavaScript module for use within Reason
  • Added route transitions to our application by binding to React Transition Group components

To follow along, use any environment you wish. Much of what we'll be doing is not ReasonReact-specific...

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