NeedFirst, C# - rextester

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

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

namespace Rextester
{
    public class l
    {
        public int a;
        public int b;
        public int c;

public l(int a_, int b_, int c_)
        {
            a = a_;
            b = b_;
            c = c_;
        }
        public l() { }
    }

public class ListOfL
    {
        public List<l> items = new List<l>();
    }

public class Program
    {
        public static void Main(string[] args)
        {
            ListOfL mylist = new ListOfL();
            mylist.items.Add(new l(1, 2, 1));
            mylist.items.Add(new l(1, 5, 99));
            mylist.items.Add(new l(2, 10, 100));
            mylist.items.Add(new l(3, 1, 99));
            mylist.items.Add(new l(3, 6, 2));

var z = (from q in mylist.items
                     select new l
                     {
                         a = q.a,
                         b = q.b,
                         c = q.c
                     }
                     ).ToList();

foreach (var data in z)
            {
                Console.WriteLine(data.a + " " + data.b + " " + data.c);
            }            
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,17 sec, absolute running time: 0,09 sec, cpu time: 0,11 sec, average memory usage: 15 Mb, average nr of threads: 3