Dart How to get the “value” of an enum

Question

Before enums were available in Dart I wrote some cumbersome and hard to maintain code to simulate enums and now want to simplify it. I need to get the value of the enum as

Answer 1

I use structure like below:

class Strings {
  static const angry = "Dammit!";
  static const happy = "Yay!";
  static const sad = "QQ";
}