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: “Next, open the pubspec.yaml file and make sure to have these two dev dependencies installed:”

A block of code is set as follows:

dev_dependencies: 
  # https://pub.dev/packages/dart_code_metrics 
  dart_code_metrics: ^4.9.1 
  # https://pub.dev/packages/flutter_lints 
  flutter_lints: ^1.0.4

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

class TodosApp extends StatelessWidget { 
  const TodosApp({ 
    Key? key, 
    required this.todoController,
  }) : super(key: key); 
  final TodosController todoController;

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Create a new Flutter project in your favorite IDE and make sure to enable web support by clicking on the Add Flutter web support checkbox.”

Tips or Important Notes

Appear like this.