static void Main(string[] args)
{
// We are creating an instance of our delegate called lambda.
// Here you can see the lambda operator => in action.
// On the left side we have the arguments, in our case x
// and on the right side we have the expression x + 1
// You can notice that instead of creating a separate method for
// incrementing of x by 1, we are using lambda expression here
// and achieve the same with one line of code.
lambda addOne = x => x + 1;
Console.WriteLine(addOne(1)); // Output: 2
Console.WriteLine("--------------");
// We are creating an instance of our delegate called multi.
// Once again, on the left side we have the arguments but this
// time we have three(x,y,z) arguments. On the right side where we
// put the expression, we are just multiplying them.
multi multiply = (x, y, z) => x * y * z;
Console.WriteLine(multiply(2, 3, 4)); //Output: 24
Console.WriteLine("--------------");
// We are creating an instance of our delegate caleld noparamsLambda.
// You can see above that our delegate returns int but doesn.t have any
// input parameters. That's the meaning of '() ' below. On the left side
// you can see we have just empty paratheses.
// Also note that on the right side we put a logic for a random number
// generaor, the same way we are doing it in every normal method.
noparamsLambda randomNumber = () =>
{
int random = new Random().Next();
Console.WriteLine("Random number generated - {0}", random);
return(random);
};
Console.WriteLine(randomNumber());
Console.WriteLine("--------------");
int[] firstTen = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
foreach (var num in firstTen)
{
Console.Write("{0} ", num);
}
Console.Write("\n");
Console.WriteLine("Even numbers:");
var even = firstTen.Where(n => n % 2 == 0);
foreach (var num in even)
{
Console.Write("{0} ", num);
}
Console.Write("\n");
}
static void Main(string[] args)
{
lambda addOne = x => x + 1;
Console.WriteLine(addOne(1)); // Output: 2
Console.WriteLine("--------------");
multi multiply = (x, y, z) => x * y * z;
Console.WriteLine(multiply(2, 3, 4)); //Output: 24
Console.WriteLine("--------------");
noparamsLambda randomNumber = () => {
int random = new Random().Next();
Console.WriteLine("Random number generated - {0}", random);
return(random);
};
Console.WriteLine(randomNumber());
Console.WriteLine("--------------");
int[] firstTen = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
foreach (var num in firstTen)
{
Console.Write("{0} ", num);
}
Console.Write("\n");
Console.WriteLine("Even numbers:");
var even = firstTen.Where(n => n % 2 == 0);
foreach (var num in even)
{
Console.Write("{0} ", num);
}
Console.Write("\n");
}
