using System;

public delegate Mapper[T,V] (mutable  item : T) :  V;

public class List[T]
{
  public Map[V] (_ : Mapper[T,V]) :  void
  { }
}

class X
{
  static Main () :  void
  {
    mutable  list_ =  List ();
    list_.Map ( Mapper (fun ( i : int) {  i/10.0; }));
  }
}
/*
BEGIN-OUTPUT
END-OUTPUT
*/