// Generic delegates.

using System;

delegate Test[T] (mutable  t : T) :  void;

class Foo[T]
{
  public event MyEvent :  Test[T];

  public Hello (mutable  t : T) :  void
  {
    when (MyEvent != null)
      MyEvent (t);
  }
}

class X
{
  static do_hello (mutable  hello : string) :  void
  {
    Console.WriteLine ("Hello: {0}", hello);
  }

  static Main () :  void
  {
    mutable  foo =  Foo ();
    foo.MyEvent +=  Test (do_hello);
    foo.Hello ("Boston");
  }
}

/*
BEGIN-OUTPUT
Hello: Boston
END-OUTPUT
*/