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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).
5 //
6 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
7
8
9 #ifndef BOOST_TT_CONDITIONAL_HPP_INCLUDED
10 #define BOOST_TT_CONDITIONAL_HPP_INCLUDED
11
12 namespace boost {
13
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; };
16
17 } // namespace boost
18
19
20 #endif // BOOST_TT_CONDITIONAL_HPP_INCLUDED