static void Main(string[] args)
{
/*finge que aqui é uma injeção de dependencia por construtor*/
IImposto iss = new ISS();
IImposto icms = new ICMS();
IImposto xpto = new XPTO();
IImposto example = new Example();
/*fim da injeção*/
Orcamento orcamento = new Orcamento(500.0);
CalculadorDeImpostos context;
context = new CalculadorDeImpostos(iss);
context.RealizaCalculo(orcamento);
context = new CalculadorDeImpostos(icms);
context.RealizaCalculo(orcamento);
context = new CalculadorDeImpostos(xpto);
context.RealizaCalculo(orcamento);
context = new CalculadorDeImpostos(example);
context.RealizaCalculo(orcamento);
}
public static void Main1()
{
// Create obj to be used as "this" parameter
DelegateIntro obj = new DelegateIntro();
//
// Create delegate
//
Action action = new Action(DelegateIntro.MStatic);
Action action1 = new Action(obj.MInstance); // Get method name + this
//Action action1 = new Action(obj.MInstance(10));// Error, we are calling the method here
// Or:
Action action2 = DelegateIntro.MStatic;
Action action3 = obj.MInstance;
//
// Invoke
//
action.Invoke(10);
action1.Invoke(20);
// Or:
action(10);
// Using "Method" property + reflection
action.Method.Invoke(null, new object[] { 10 });
action1(20);
//
// Using GenericAction
//
GenericAction <int> ga = obj.MInstance;
ga(99);
ga.Invoke(99);
//
// Associate lambda
//
//Action lambda = new Action( (int i) => Console.WriteLine("Lambda, i = {0}", i));
// Simpler syntax, without calling new Action
//Action lambda = (int i) => Console.WriteLine("Lambda, i = {0}", i);
//Action lambda = i => Console.WriteLine("Lambda, i = {0}", i);
//Action lambda = i => { Console.WriteLine("Lambda, i = {0}", i); return 0; }; // Error
/////////////////////////////////////////
//Action lambda1 = i => obj.MInstance(i);
// In order to capture the context (variable obj),
// the above line generates an auxiliary class (nested class), e.g.,
// public class XPTO {
// public DelegateIntro obj;
//
// public void Anonymous1(int i) {
// obj.MInstance(i);
// }
// }
// Main:
// XPTO xpto = new XPTO();
// // Capture variable "obj"
// xpto.obj = obj;
// Action lambda1 = xpto.Anonymous1;
//
//
// COMMENT/UNCOMMENT
//
XPTO xpto = new XPTO();
// Capture variable "obj"
xpto.obj = obj;
Action lambda1 = xpto.Anonymous1;
lambda1(40);
/////////////////////////////////////////
// Invoke
//lambda(30);
//// Or:
//lambda.Invoke(30);
}
