public static PostgresDAO Instance()
{
if (_instance == null)
{
_instance = new PostgresDAO();
}
return(_instance);
}
static void Main(string[] args)
{
// Initialise postgres DAO
IPostingsDAO DAO = PostgresDAO.Instance();
// Query database for responses
var student = new StudentController("Harry", 100.0m, "Undergraduate", DAO);
var result = student.search();
// Output the response
Console.WriteLine(student.getView());
}