1 // (C) Copyright John Maddock 2010.
2 // Use, modification and distribution are subject to the Boost Software License,
3 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
4 // http://www.boost.org/LICENSE_1_0.txt).
6 // See http://www.boost.org/libs/type_traits for most recent version including documentation.
9 #ifndef BOOST_TT_CONDITIONAL_HPP_INCLUDED
10 #define BOOST_TT_CONDITIONAL_HPP_INCLUDED
14 template <bool b, class T, class U> struct conditional { typedef T type; };
15 template <class T, class U> struct conditional<false, T, U> { typedef U type; };
20 #endif // BOOST_TT_CONDITIONAL_HPP_INCLUDED