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

   1 [/
   2   Copyright 2015 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_default_constructible is_default_constructible]
   9
  10    template <class T>
  11    struct is_default_constructible : public __tof {};
  12
  13 __inherit If `T` can be default-constructed
  14 then inherits from __true_type, otherwise inherits from __false_type.  Type `T`
  15 must be a complete type.
  16
  17 __compat This trait requires the C++11 feature `decltype` support for full support.
  18 While there is some fallback code for cases where this is not the case, the trait should really be considered broken in that case.
  19
  20 __header ` #include <boost/type_traits/is_copy_constructible.hpp>` or ` #include <boost/type_traits.hpp>`
  21
  22 [endsect]
  23