lambda代表解析

我目前正在阅读乔恩·斯基特的《深度C》第二版,我想到了以下问题:

编译器如何在 list.Sort(Comparison<T>) 和 list.Sort(MyComparison<T>) 在以下示例中:

// MyComparison has the same signature as Comparison<in T>
public delegate int MyComparison<in T>(T x, T y);

public class MyList<T> : List<T>
{
    // Sort is like Sort(Comparison<T>) except it takes a MyComparison<T> in parameter
    public int Sort(MyComparison<T> comparison)
    {
        Console.WriteLine("Sort MyComparison<T>");
        return -1;
    }
}

MyList<Product> list = new MyList<Product>();

list.Sort((product1, product2) => product1.Name.CompareTo(product2.Name));

// Equivalent to
list.Sort(new MyComparison<Product>((product1, product2) => product1.Name.CompareTo(product2.Name)));

// But not equivalent to...
list.Sort(new Comparison<Product>((product1, product2) => product1.Name.CompareTo(product2.Name)));

提前谢谢