[type_traits] add_reference

From: Aleksey Gurtovoy (alexy_at_[hidden])
Date: 2000-12-22 07:34:58

Another thought about 'ob_type_traits.hpp' header, since we are on the
subject :). Right now it does not properly implement 'add_reference' (and
non-existing 'add_pointer' ;)

// current version
template <typename T> struct add_reference{ typedef T& type; };

...although it certainly could:

template <typename T>
struct add_reference {
  typedef typename ct_if<is_reference<T>::value, T&, T>::type type;
};

template <typename T>
struct add_pointer {
  typedef typename ct_if<is_pointer<T>::value, T*, T>::type type;
};

  --Aleksey