libs/type_traits/doc/is_reference.qbk
[/ Copyright 2007 John Maddock. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt). ] [section:is_reference is_reference] template <class T> struct is_reference : public __tof {}; __inherit If T is a reference type (either an lvalue reference or an rvalue reference) then inherits from __true_type, otherwise inherits from __false_type. __std_ref 3.9.2 and 8.3.2. __compat If the compiler does not support partial-specialization of class templates, then this template may report the wrong result for function types, and for types that are both const and volatile qualified. __header ` #include <boost/type_traits/is_reference.hpp>` or ` #include <boost/type_traits.hpp>` __examples [:`is_reference<int&>` inherits from `__true_type`.] [:`is_reference<int const&>::type` is the type `__true_type`.] [:`is_reference<int const&&>::type` is the type `__true_type`.] [:`is_reference<int (&)(long)>::value` is an integral constant expression that evaluates to /true/ (the argument in this case is a reference to a function).] [:`is_reference<T>::value_type` is the type `bool`.] [endsect]