Example: sorting a list of objects in Dart

sort_list_of_objects.dart

void main() {
  List<FullName> fullNamesList = [FullName('Abe','Lincoln'),   FullName('Babe', 'Ruth'), FullName('Carry', 'Bradshaw'),];
  print ('fullNamesList:\n${fullNamesList.toString()}\n');
  
  fullNamesList.sort((a,b) => a.lastName.compareTo(b.lastName));
  print ('fullNamesList after sort by lastName:\n$fullNamesList\n');
  
  fullNamesList.sort((a,b) => a.firstName.compareTo(b.firstName));
  print ('fullNamesList after sort by firstName:\n$fullNamesList\n');  
}

class FullName{
  String firstName;
  String lastName;
  FullName(this.firstName, this.lastName );
  
  toString(){
    return '$firstName $lastName';
  }
}