public void Test()
{
Console.Clear();
Console.WriteLine("Demo Lambda");
Console.Write(">>>>>Nhap vao 1 so nguyen >0: ");
int n = int.Parse(Console.ReadLine().Trim());
// khai bao bien delegate [ma] - ket hop bieu thuc lambda tinh giai thua
DelegateMath ma = (int x) =>
{
long r = 1;
for (int i = 2; i <= x; i++)
{
r *= i;
}
return(r);
};
long kq = ma(n);
Console.WriteLine($"{n}! = {kq} ");
// khai bao bien delegate [ma] - ket hop bieu thuc lambda tinh binh phuong
ma = x => x * x;
kq = ma(n);
Console.WriteLine($"Binh Phuong cua {n} = {kq} ");
Console.Write("Nhap chuoi ky tu thu 1: ");
string s1 = Console.ReadLine().Trim();
Console.Write("Nhap chuoi ky tu thu 2: ");
string s2 = Console.ReadLine().Trim();
// kiem tra s1 co chua s2 khong? thong qua delegate - ket hop bieu thuc lambda
Func <string, string, bool> f2 = (x1, x2) => Regex.IsMatch(s1, s2, RegexOptions.IgnoreCase);
if (f2(s1, s2))
{
Console.WriteLine($"[{s1}] co chua [{s2}]!");
}
else
{
Console.WriteLine(">>>> Khong tim thay");
}
Console.ReadKey(true);
}
private static void DelegateDemo()
{
CustomerManager customerManager = new CustomerManager(); //CustomerManeger classından nesne oluşturuldu.
DelegateMessenger delegateMessenger = customerManager.SendMessage; //Bu nesneye ait metotlar oluşturulan delegateye atandı.
delegateMessenger += customerManager.ShowAlert; //delegate ye metot eklendi.
delegateMessenger(); //delegate aktif hale getirildi.
Matematik matematikIslem = new Matematik();
DelegateMath delegateMath = matematikIslem.Topla;
delegateMath += matematikIslem.Cikarma;
delegateMath(4, 3);
DelegateCalculate delegateCalculate = matematikIslem.Bol;
result = delegateCalculate(5, 3);
Console.WriteLine(result);
delegateCalculate += matematikIslem.Carp;
Console.WriteLine(delegateCalculate(result, 3));
}
