static void Main(string[] args)
{
Console.WriteLine("Hello World !");
Program p = new Program();
delegatePointer mydel = p.print;
mydel += p.display; //multicast delegate without returntype,parameters
mydel();
mydel -= p.print; //removing delegate reference
mydel();
calAreaPointer cptr = Calculate.calArea;
//double area = cptr(20);
//Console.WriteLine("Area : "+area);
cptr += Calculate.calDist; //multicast delegate with returntype,parameters
double dist = cptr(32);
Console.WriteLine("Distance : " + dist);
Console.ReadKey();
}
public static void Main()
{
calAreaPointer cpointer = new calAreaPointer(delegate(int r)
{
return(3.14 * r * r);
});
double area = cpointer(20);
}
static void Main(string[] args)
{
calAreaPointer cptr = new calAreaPointer(delegate(double r) { return(3.14 * r * r); });
// Program p = new Program();
//// Console.WriteLine("hello world!");
// deligatePointer mydeligate = new deligatePointer(p.print);
// //deligatePointer mydeligate = p.print;
// mydeligate += p.Display;//multi cast delegate
// mydeligate();
// mydeligate -= p.print;
// mydeligate();
// calAreaPointer cptr = Caluclator.calArea;
//cptr += Caluclator.calArea1;
//lamda expression
//calAreaPointer cptr1 = (r => 3.14 * r * r);
//double area = cptr(100.00);
//Console.WriteLine(area);
//public void print()
//{
// Console.WriteLine("welcome delegate");
//}
//public void Display()
//{
// Console.WriteLine("welcome to multi cASTING");
//}
// prebuild deligates func<>,Action<>,Predicate<>
Func <double, double> f1 = (r => 3.14 * r * r);
double area2 = f1(1);
Console.WriteLine(area2);
Action <string> act = (X => Console.WriteLine(X));
act("welcoome");
Predicate <string> pt = (y => y.Length > 3);
Console.WriteLine(pt("kartrhik"));
int[] array = new int[] { 1, 2, 3, 4 };
List <string> names = new List <string>();
names.Add("ajay");
names.Add("karethik");
names.Add("sai");
int x = array.Count(x1 => x1 > 4);
Console.WriteLine(x);
List <string> sn = names.FindAll(y => y.Contains('i'));
foreach (string n in sn)
{
Console.WriteLine(pt("kartrhik"));
}
}
static void Main(string[] args)
{
Console.WriteLine("Hello World");
Program p = new Program();
delegatePointer mydelegate = p.print;
mydelegate();
calAreaPointer cpt = Calculate.CalArea;
double area = cpt(20);
Console.WriteLine(area);
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("hello");
Program p = new Program();
//deligatePointer myde = new deligatePointer(print);
deligatePointer myde = p.print;
myde();
// Calculate cr = new Calculate();
calAreaPointer cptr = new calAreaPointer(Calculate.CalArea);
double area = cptr(20);
Console.WriteLine(area);
Console.ReadLine();
}
static void Main(string[] args)
{
//Console.WriteLine("Hello world");
Program p = new Program();
deligatePointer mydeligate = p.print;
mydeligate += p.display; //multicast delegate
mydeligate();
mydeligate -= p.print; //to remove print
mydeligate();
calAreaPointer cptr = Calculate.calArea; //create a delegate object
cptr += Calculate.calDistance; //multiple return only last method
double area = cptr(20);
Console.WriteLine(area);
Console.ReadLine();
}
static void Main(string[] args)
{
//method reference directly
//calAreaPointer cptr = new calAreaPointer(calArea);
//anonymous method
calAreaPointer cptr = new calAreaPointer(delegate(double r) {
return(3.14 * r * r);
});
//above code can simpliy in lambda
calAreaPointer cptr1 = (r => 3.14 * r * r);
double area1 = cptr1(10);
double area = cptr(12);
Console.WriteLine(area);
Console.WriteLine(area1);
//prebuild delegates Func<>,Action<>,Predicate<>
//Func delegate can have input and output parameter
Func <double, double> f1 = (r => 3.14 * r * r);
double area2 = f1(14);
Console.WriteLine(area2);
Action <string> act = (x => Console.WriteLine(x));
act("Welcome");
Predicate <string> pt = (y => y.Length > 3);
int[] array = new int[] { 1, 3, 4, 5 };
List <string> names = new List <string>();
names.Add("Ramya");
names.Add("Pooja");
names.Add("Sai");
int c1 = array.Count(c => c > 2);
Console.WriteLine(c1);
List <string> sn = names.FindAll(y => y.Contains('y'));
foreach (string n in sn)
{
Console.WriteLine(n);
}
//Console.WriteLine(pt("cts"));
Console.ReadLine();
}
static void Main(string[] args)
{
calAreaPointer cptr = new calAreaPointer(delegate(double r) { return(3.14 * r * r); });
double area = cptr(12);
Console.WriteLine(area);
//above code is simplified with lambda
calAreaPointer cptr1 = (r => 3.14 * r * r);
double area1 = cptr1(10);
Console.WriteLine(area1);
Func <double, double> f1 = r => 3.14 * r * r;
double area2 = f1(14);
Console.WriteLine(area2);
Action <string> act = (x => Console.WriteLine(x));
act("welcome");
Predicate <string> pt = (y => y.Length > 3);
int[] array = new int[] { 1, 2, 3, 4 };
List <string> names = new List <string>();
names.Add("arun");
names.Add("raj");
names.Add("jai");
int s = array.Count(x => x > 4);
Console.WriteLine(s);
List <string> sn = names.FindAll(y => y.Contains('y'));
foreach (string n in sn)
{
Console.WriteLine(n);
}
Console.WriteLine(pt("cts"));
Console.ReadLine();
}
static void Main(string[] args)
{
calAreaPointer cptr = new calAreaPointer(delegate(double r) { return(3.14 * r * r); });
Program p = new Program();
// Console.WriteLine("hello world!");
deligatePointer mydeligate = new deligatePointer(p.print);
//deligatePointer mydeligate = p.print;
mydeligate += p.Display;//multi cast delegate
mydeligate();
mydeligate
= p.print;
mydeligate();
calAreaPointer cptr = Caluclator.calArea;
cptr += Caluclator.calArea1;
lamda expression
calAreaPointer cptr1 = (r => 3.14 * r * r);
double area = cptr(100.00);
Console.WriteLine(area);
static void Main(string[] args)
{
//anonymous method
calAreaPointer cptr = new calAreaPointer(delegate(double r) { return(3.14 * r * r); });
//above code you can simplify wih lambda
calAreaPointer cptr1 = (r => 3.14 * r * r);
double area1 = cptr1(10);
Console.WriteLine(area1);
double area = cptr(12);
Console.WriteLine(area);
//prebuild delegates Func<>,Action<>,Predicate<>
Func <double, double> f1 = (r => 3.14 * r * r);
double area2 = f1(14);
Console.WriteLine(area2);
Action <string> act = (y => Console.WriteLine(y));
act("Welcome");
Predicate <string> pt = (y => y.Length > 3);
Console.WriteLine(pt("chennai"));
int[] array = new int[] { 1, 3, 4, 5 };
List <string> names = new List <string>();
names.Add("ajay");
names.Add("raj");
names.Add("sai");
int x = array.Count(a1 => a1 > 2);
Console.WriteLine(x);
List <string> sn = names.FindAll(y => y.Contains('y'));
foreach (string n in sn)
{
Console.WriteLine(n);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Program p = new Program();
//deligatePointer mydel = new deligatePointer(p.print);
deligatePointer mydel = p.print;
mydel += p.display;//To do multicast method calls.
calAreaPointer cal = Caluculate.calArea;
cal += Caluculate.caldist;
double a1 = cal(20);
cal += Caluculate.caldist;
double d = cal(20);
Console.WriteLine("distance is..." + d);
Console.WriteLine("area of a square is..." + a1);
mydel();
mydel -= p.print;
mydel();
Console.ReadKey();
}
static void Main(string[] args)
{
//Method reference directly
calAreaPointer cptr1 = new calAreaPointer(calArea);
/*Anonymous method
* calAreaPointer cptr = new calAreaPointer(delegate (double r)
* {
* return (3.14 * r * r);
* }
* );
* double area = cptr(12);
* Console.WriteLine(area);
*/
//Lambda Expression (Simplified form of above code)
calAreaPointer cptr = (r => 3.14 * r * r);
double area = cptr(10);
Console.WriteLine(area);
Console.ReadKey();
}
static void Main(string[] args)
{
Console.WriteLine("hello world");
Program p = new Program();
deligatePointer mydel = p.print;
mydel += p.display;//multicast deligate
mydel();
mydel -= p.print;
mydel();
calAreaPointer cptr = Calci.calArea;
cptr += Calci.caldistance;//multicast delegate having returntype primitive datatype
double area = cptr(20);
Console.WriteLine(area);//it will retu-rn last value;
Console.ReadKey();
}
