Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Based on this layout, we see that the entry point for the iOS version of our app is index.ios.js and that a specific iOS folder (and Android for that matter) is generated."

A block of code is set as follows:

class Tasks extends Component { 
  render () { 
    return ( 
      <View style = {{ flex: 1, justifyContent: 'center',  
        alignItems: 'center', backgroundColor: '#F5FCFF'  
      }}> 
        <Text style = {{ fontSize: 20, textAlign:  
          'center', margin: 10 }}> 
          Welcome to React Native! 
        </Text> 
      </View> 
    ) 
  } 
}

Any command-line input or output is written as follows:

react-native init Tasks

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "When you open the Developer menu, you'll see the following options."

Warnings or important notes appear in a box like this.

Tips and tricks appear like this.