tuples-and-linq.cs

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

public class Program
{
  public static void Main()
  {
    var markers = new[]{
      (a: 1, s: "a"),
      (a: 2, s: "b"),
      (a: 3, s: "c"),
    };
    var x = markers.FirstOrDefault(((int a, string s) v) => v.a == 1);
    Console.WriteLine(x);
  }
}