//--------------------------------------------------
static void Main(string[] args)
{
//using the delegate
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>calling delegate...");
MathOp f = add;
var res = f(2, 3);
Debug.Assert(res == 5);
Console.WriteLine("f(2+3)={0}", res);
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>calling delegate...");
f = subtract;
res = f(100, 90);
Debug.Assert(res == 10);
Console.WriteLine("f(100-90)={0}", res);
//using the CalculateAndPrint
//using the delegate
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>passing delegate as parameter...");
f = add;
CalculateAndPrint(2, 3, f);
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>passing delegate as parameter...");
f = subtract;
CalculateAndPrint(100, 90, f);
//call using the DELEGATE INLINED !
//return type can be deduced !!!
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>using delegate - inline...");
CalculateAndPrint(2, 3, delegate(int a, int b){ return(a + b); });
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>using delegate - inline...");
CalculateAndPrint(100, 10, delegate(int a, int b)
{
return(a - b);
}
);
//using lambdas - to inline method to call - to define the method (delegate parameter)
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>using lambdas...");
CalculateAndPrint(2, 3, (int a, int b) => { return(a + b); });
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>using lambdas...");
CalculateAndPrint(100, 90, (int a, int b) => { return(a - b); });
//using delegate + generics
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>calling delegate generic...");
CombineGeneric <int> gn = add;
res = gn(2, 3);
Debug.Assert(res == 5);
Console.WriteLine("gn(2+3)={0}", res);
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>calling delegate generic (double)...");
CombineGeneric <double> gnd = add;
double resd = gnd(2.5, 3.5);
Console.WriteLine("gn(2.5+3.5)={0}", resd);
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>using CalculateAndPrintGen<int>...");
CalculateAndPrintGen <int>(100, 90, (a, b) => { return(a + b); });
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>using CalculateAndPrintGen<double>...");
CalculateAndPrintGen <double>(10.0, 20.0, (a, b) => a + b);
Console.WriteLine("__________________________________________");
Console.WriteLine(">>>>>using CalculateAndPrintGen - boolean...");
CalculateAndPrintGen(true, false, (a, b) => a && b);
}
static void CalculateAndPrintGen <T>(T x, T y, CombineGeneric <T> f)
{
var res = f(x, y);
Console.WriteLine("CalculateAndPrintGen({0},{1})={2}; f={3}", x, y, res, f.Method.ToString());
}
