Static Methods (aka Class Methods) and Variables
Dart includes the concept of class variables and methods, though it takes a dim view of them. It regards them as a necessary evil, which, of course, they are. These are introduced with the static keyword.
| classes/static_methods.dart | |
| | class Planet { |
| | static List rocky_planets = const [ |
| | 'Mercury', 'Venus', 'Earth', 'Mars' |
| | ]; |
| | static List gas_giants = const [ |
| | 'Jupiter', 'Saturn', 'Uranus', 'Neptune' |
| | ]; |
| | static List get known { |
| | var all = []; |
| | all.addAll(rocky_planets); |
| | all.addAll(gas_giants); |
| | return all; |
| | } |
| | } |
Invoking a static method is just like invoking an instance method, except the class itself is the receiver.
| | Planet.known |
| | // => ['Mercury', ... |
Get Dart 1 for Everyone now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
