Dart Academy · Lesson

Enhanced Enums With Fields and Methods

Attach data and behavior to each value.

Enums Can Carry Data

Modern Dart lets each enum member hold its own data. These are enhanced enums, and they turn simple labels into rich values.

Declare a final field on the enum, then pass a value for each member. Every member now carries that extra data.

enum Planet {
  earth(9.8), mars(3.7);
  final double gravity;
}