dart语言入门：10、枚举类型

enum Color { red, green, blue }

assert(Color.red.index == 0);
assert(Color.green.index == 1);
assert(Color.blue.index == 2);

List<Color> colors = Color.values;
assert(colors[2] == Color.blue);

var aColor = Color.blue;

switch (aColor) {
  case Color.red:
    print('Red!');
    break;
  case Color.green:
    print('Green!');
    break;
  default:
    print(aColor); // 'Color.blue'
}