using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace SimpleVariance
{
class Animal { }
class Cat: Animal { }
class Program
{
// To understand what the new CoVariance and ContraVariance code does for you
// Try deleting or adding the words out and in from the following 2 lines of code:
delegate T Func1<out T>();
delegate void Action1<in T>(T a);
static void Main(string[] args)
{
Func1<Cat> cat = () => new Cat();
Func1<Animal> animal = cat;
Action1<Animal> act1 = (ani) => { Console.WriteLine(ani); };
Action1<Cat> cat1 = act1;
Console.WriteLine(animal());
cat1(new Cat());
}
}
}