c#

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        private int myVar;

        public int MyProperty
        {
            get { return myVar; }
            set { myVar = value; }
        }

        delegate Boolean del1(String param);

        Boolean valami(String param)
        {
            return param.Length > 5;
        }

        void valamiVoid(String param)
        {
            valami(param);
        }
 
        private void foo(String s1, String s2 = "opt2", String s3 = "aaa") 
        {
            
        }

        public void run()
        {
            Console.WriteLine("Hello world!");

            var l = new List<String>{ "Miki", "Peti", "Levis", "Krisztian" };

            l.Where(s => s.Length > 4).Select(s => s).ToList().ForEach( w => Console.WriteLine( w ));

            foo("s1", s3: "sdsd");

            var ie = from s in l
                     where s.Length > 4
                     select new { alma = s };
            
            var sss = new { Nev = "mmmm" };

            

            del1 fv = new del1(this.valami);

            foreach (var nev in l)
            {
                if (!fv(nev))
                {
                    Console.WriteLine(nev);
                }
            }

            Func<String, Boolean> f = s =>
            {
                Console.WriteLine("dolgozok, turelem...");
                return s.Length > 5;
            };

            Action<String> f2 = valamiVoid;

            

            Console.ReadLine();
        }

        static void Main(string[] args)
        {
            Program p = new Program();
            p.run();
        }
    }
}