Typedeffing a function (NOT a function pointer)

Question

typedef void int_void(int);

int_void is a function taking an integer and returning nothing.

My question is: can it be

Answer 1

It can be used in the following cases (out of the top of my head):

• generic code:

  boost::function func;

• other typedefs:

  typedef int_void* int_void_ptr;

• declarations:

  void add_callback(int_void* callback);

There may be others.