| [/ |
| Copyright 2010 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:conditional conditional] |
| [/===================================================================] |
| |
| |
| __header ` #include <boost/type_traits/conditional.hpp>` or ` #include <boost/type_traits.hpp>` |
| |
| namespace boost { |
| template <bool B, class T, class U> struct __conditional; |
| } |
| |
| If B is true, the member typedef type shall equal T. If B is false, the member typedef type shall equal U. |
| |
| This trait is really just an alias for `boost::mpl::if_c`. |
| |
| [endsect] |
| |