boost/type_traits/conditional.hpp

//  (C) Copyright John Maddock 2010.  
//  Use, modification and distribution are subject to 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).
//
//  See http://www.boost.org/libs/type_traits for most recent version including documentation.
#ifndef BOOST_TT_CONDITIONAL_HPP_INCLUDED
#define BOOST_TT_CONDITIONAL_HPP_INCLUDED
namespace boost {
template <bool b, class T, class U> struct conditional { typedef T type; };
template <class T, class U> struct conditional<false, T, U> { typedef U type; };
} // namespace boost
#endif // BOOST_TT_CONDITIONAL_HPP_INCLUDED