ceph/src/boost/libs/type_traits/doc/is_lvalue_reference.qbk

   1 [/
   2   Copyright 2010 John Maddock.
   3   Distributed under the Boost Software License, Version 1.0.
   4   (See accompanying file LICENSE_1_0.txt or copy at
   5   http://www.boost.org/LICENSE_1_0.txt).
   6 ]
   7
   8 [section:is_lvalue_reference is_lvalue_reference]
   9    template <class T>
  10    struct is_lvalue_reference : public __tof {};
  11
  12 __inherit If T is an lvalue reference type
  13 then inherits from __true_type,
  14 otherwise inherits from __false_type.
  15
  16 __std_ref 3.9.2 and 8.3.2.
  17
  18 [all_compilers]
  19
  20 __header ` #include <boost/type_traits/is_lvalue_reference.hpp>` or ` #include <boost/type_traits.hpp>`
  21
  22 __examples
  23
  24 [:`is_lvalue_reference<int&>` inherits from `__true_type`.]
  25
  26 [:`is_lvalue_reference<int const&>::type` is the type `__true_type`.]
  27
  28 [:`is_lvalue_reference<int const&&>::type` is the type `__false_type`.]
  29
  30 [:`is_lvalue_reference<int (&)(long)>::value` is an integral constant
  31 expression that evaluates to /true/ (the argument in this case is
  32 a reference to a function).]
  33
  34 [:`is_lvalue_reference<T>::value_type` is the type `bool`.]
  35
  36 [endsect]
  37