Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Column() contains two children, Button() and Image(). The image is visible only when showImage is true.”

A block of code is set as follows:

class MainActivity : AppCompatActivity() {
  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContent {
      MainView()
    }
  }
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

TextField(
    value = name.value,
    onValueChange = {
        name.value = it
    },
    placeholder = {
        Text(text = stringResource(id = R.string.hint))
    },

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

$ mkdir css
$ cd css

Bold: Indicates a new term, an important word, or words that you see on screen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “To deploy a composable function to a real device or the Android Emulator, click on the Run Preview button.”

Tips or important notes

Appear like this.