linq.cs

gistfile1.txt

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

namespace name_linq
{
    class Program
    {
        static void Main(string[] args)
        {

            List<string> names = new List<string>()
            {
                "Robert",
                "Winston",
                "Leonard",
                "Jesko",
                "Paul",
                "Christian",
                "Ellie",
                "Solveig",
                "Stina",
                "Emilio"
            };


            foreach (var name in names)
            {
                var firstDigit = name[0];
                Console.WriteLine(firstDigit);
            }

            Console.WriteLine("---------");

            foreach (var name in names)
            {
                var firstDigit = name.First();
                Console.WriteLine(firstDigit);
            }

            Console.WriteLine("---------");

            names.ForEach(name => Console.WriteLine(name.First()));

            Console.WriteLine("--------- Select");


            var firstDigitList = names.Select(name => name.First());

            foreach(var digit in firstDigitList)
            {
                Console.WriteLine(digit);
            }


            Console.WriteLine("--------- Select + Foreach");

            names.Select(name => name.First())
                 .ToList()
                 .ForEach(digit => Console.WriteLine(digit));


            Console.ReadLine();

        }
    }
}