NAMED CONSTRUCTORS IN DART code example

Example 1: named constructor dart

class Person {
  String name;
  int age;
  Person({this.name = '', this.age = 0});
}

void main() {
  Person person1 = Person(name: "Raaj", age: 35);
  print(person1.age);
}

Example 2: dart call constructor in constructor

class Chipmunk {
  String name;
  int fame;

  Chipmunk.named(this.name, [this.fame]);

  Chipmunk.famous1() : this.named('Chip', 1000);
  factory Chipmunk.famous2() {
    var result = new Chipmunk.named('Chip');
    result.fame = 1000;
    return result;
  }
}