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Mastering React Native

You're reading from   Mastering React Native Learn Once, Write Anywhere

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Product type Paperback
Published in Jan 2017
Publisher Packt
ISBN-13 9781785885785
Length 496 pages
Edition 1st Edition
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Authors (2):
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Eric Masiello Eric Masiello
Author Profile Icon Eric Masiello
Eric Masiello
Jacob Friedmann Jacob Friedmann
Author Profile Icon Jacob Friedmann
Jacob Friedmann
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Table of Contents (13) Chapters Close

Preface 1. Building a Foundation in React FREE CHAPTER 2. Saying HelloWorld in React Native 3. Styling and Layout in React Native 4. Starting our Project with React Native Components 5. Flux and Redux 6. Integrating with the NYT API and Redux 7. Navigation and Advanced APIs 8. Animation and Gestures in React Native 9. Refactoring for Android 10. Using and Writing Native Modules 11. Preparing for Production 12. React Native Tools and Resources

Watchman


Watchman is an open source tool created by Facebook (https://facebook.github.io/watchman/). React Native's packager uses Watchman to recursively watch for changes to our source code files across one or more directory trees. Once it detects a change, it automatically rebuilds the JavaScript bundle. This allows us to sidestep one of the slowest and most painful parts of native development.

Much like several of our other tools, once Watchman is installed, you won't have to worry about it. The React Native Package Manager handles running Watchman for us.

Flow

Unlike the other tools mentioned, Flow is entirely optional. Flow is yet another open source tool created by the Facebook team (http://flowtype.org/). It's used to add type annotations to our JavaScript code. JavaScript, as you likely already know, is a dynamically typed language. This means you never need to declare a variable as an int or a string. You just declare a variable and set a value. The type is implicitly set based on...

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