const.dart

class ConstExample {
  final String someValue;
  
  const ConstExample ({this.someValue});
}

void main() {
  const d = ConstExample(someValue: "teste");
  print(d.hashCode);
  
  const e = ConstExample(someValue: "teste");
  print(e.hashCode);
  
  for (int i = 0; i < 5; i++) {
    const v = ConstExample();
    print(v.hashCode);
  }
  
}