epoll事件枚举中的宏定义是什么？

Question

epoll事件常量在Linux上定义如下：

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

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

        List<teamNeeds> list = new List<teamNeeds> {
            new teamNeeds("abc", "starter", "ka", "starter")
        };

        //iterate over list and reflect properties
        foreach (var item in list) {
            foreach (var prop in item.GetType().GetProperties())
            {
                if(prop != null && prop.GetValue(item, null).ToString() == "starter")
                    Console.WriteLine("{0} = {1}", prop.Name, prop.GetValue(item, null));
            }
        }

        //same via linq      
        var selectedViaLinq = list.Select(item =>
        {
            return item.GetType().GetProperties().Where(prop => prop.GetValue(item, null) == "starter").ToList();
        }).ToList();


    }
}
public class teamNeeds
{
    public teamNeeds(string qb, string rb, string wr, string te)
    {
        QB = qb;
        RB = rb;
        WR = wr;
        TE = te;
    }

    public string QB { get; set; }
    public string RB { get; set; }
    public string WR { get; set; }
    public string TE { get; set; }
}

所有宏定义的重点是什么？他们似乎没有做任何事情。