private static void Comparing()
{
#region comparing
var qu119 = new Quarter(2019, 1);
var qu219 = Quarter.CreateQuarter2(2019);
// IComparable<T>.CompareTo
Console.WriteLine(qu119.CompareTo(qu219));
Console.WriteLine();
// IEquatable<T>.Equals
Console.WriteLine(qu119.Equals(qu219));
Console.WriteLine();
// Comparison operators
Console.WriteLine(qu119 < qu219);
Console.WriteLine(qu119 <= qu219);
Console.WriteLine(qu119 == qu219);
Console.WriteLine(qu119 != qu219);
Console.WriteLine(qu119 > qu219);
Console.WriteLine(qu119 >= qu219);
Console.WriteLine();
#endregion
}
