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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5. public interface I {}
  6.  
  7. public class A : I {}
  8.  
  9.  
  10. public class Test
  11. {
  12. 	public static void foo(List<I> list) 
  13. 		=> Console.WriteLine(list.Count);
  14.  
  15. 	public static void bar(IEnumerable<I> list) 
  16. 		=> Console.WriteLine(list.Count());
  17.  
  18. 	public static void Main()
  19. 	{
  20. 		var list = new List<A> { 
  21. 			new A(),
  22. 			new A()
  23. 		};
  24.  
  25. 		foo(list.Cast<I>().ToList());
  26. 		bar(list);
  27. 	}
  28. }
Success #stdin #stdout 0.02s 16860KB
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https://ideone.com/0bdJKr
language:
C# (gmcs 5.20.1)
created:
4 years ago
visibility:
public

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