example.cpp

 any & operator=(any const & rhs)
 {           
   any(rhs).swap(*this);
   return *this;
}

Order

1. implicit conversion
2. explicit conversion
3. stream operator
4. to_string

this_compiles.cpp

template <class = void>
struct A
{
  void foo()
  {
    this->aeoauoeuaoaoesc54210672075636;
  }
};
 
int main()
{
  A<> a; 
	((void)a);
}