Lambda based IEqualityComparer

LambdaEqualityComparer.cs

void Main()
{
	List<Person> persons = new List<Person>
	{
		new Person { Id = 1, Name = "Bob", Location = "AFB" },
		new Person { Id = 2, Name = "Alice", Location = "AFB" },
		new Person { Id = 3, Name = "Jill", Location = "AFB" },
		new Person { Id = 4, Name = "Frank", Location = "AFB" },
		new Person { Id = 1, Name = "Mark", Location = "AFB" }
	};
	
	var list = persons.Distinct().ToList();
	var lambdalist = persons.Distinct((x, y) => x.Id == y.Id).ToList();
	
	Console.WriteLine("Regular Distinct");
	foreach(var l in list)
	{
		Console.WriteLine($"Person :: Id = {l.Id}, Name = {l.Name}, Location = {l.Location}");
	}

	Console.WriteLine("Lambda Distinct");
	foreach(var ll in lambdalist)
	{
		Console.WriteLine($"Person :: Id = {ll.Id}, Name = {ll.Name}, Location = {ll.Location}");
	}

	
}

public class Person
{
	public int Id {get;set;}
	public string Name {get;set;}
	public string Location {get;set;}
}

public static class Extensions
{
	public static IEnumerable<TSource> Distinct<TSource>(this IEnumerable<TSource> enumerable, Func<TSource, TSource, bool> comparer)
	{
	    return enumerable.Distinct(new LambdaComparer<TSource>(comparer));
	}
}

public class LambdaComparer<T> : IEqualityComparer<T>
{
     private readonly Func<T, T, bool> _lambdaComparer;
     private readonly Func<T, int> _lambdaHash;
 
     public LambdaComparer(Func<T, T, bool> lambdaComparer) :
         this(lambdaComparer, o => 0)
     {
     }
 
     public LambdaComparer(Func<T, T, bool> lambdaComparer, Func<T, int> lambdaHash)
     {
         if (lambdaComparer == null)
             throw new ArgumentNullException("lambdaComparer");
         if (lambdaHash == null)
             throw new ArgumentNullException("lambdaHash");
 
          _lambdaComparer = lambdaComparer;
          _lambdaHash = lambdaHash;
     }
 
     public bool Equals(T x, T y)
     {
          return _lambdaComparer(x, y);
     }
 
     public int GetHashCode(T obj)
     {
         return _lambdaHash(obj);
     }
}