public static void Main1()
{
DT d = f1;
//<=>
//DT d = new DT(Del.f1);
d(1);
d.Invoke(1);
//d = f2;
d = new DT(Del.f2);
d(2);
//d = new Del().instance;
Del p = new Del();
d = p.instance;
//d = new DT(p.instance);
d(3);
//p.instance(10); // E' possivel associar metodos privados a delegates mas so' e' possivel chama-los dentro da classe.
d = new Test().instance;
d(20);
//d = error; // Error, void Del.error(int) has the wrong return type
//////
DT chain1 = f1;
chain1 += f2;
DT chain2 = p.instance;
chain2 += f1;
DT chain3 = chain1 + chain2;
Console.WriteLine(chain3(100));
Console.WriteLine(chain3.GetInvocationList().Length);
chain3 -= f1;
Console.WriteLine(chain3(100));
Console.WriteLine(chain3.GetInvocationList().Length);
}