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.