5 public static int Test (this int a, int b = 5, string s = "")
10 static T Foo<T> (T t, int a)
15 static void Lambda (Func<int, int> a)
20 public static int Main ()
25 if (1.Test (b : 2) != 5)
28 if (Foo ("n", a : 4) != "n")
31 if (Foo (t : "x", a : 4) != "x")
34 Lambda (a : (a) => 1);
38 Lambda (a : (a) => var);
40 Console.WriteLine ("ok");