map inside set in dart code example

Example 1: Map in dart

void main() { 
   var details = new Map(); 
   details['Usrname'] = 'admin'; 
   details['Password'] = 'admin@123'; 
   print(details); 
} 

// Output
// {Usrname: admin, Password: admin@123}

Example 2: dart object to map

class Human {
  String name;
  int age;

  Map toMap() {
    return {
      'name': name,
      'age': age,
    };
  }
}