forked from boostorg/mpl
1bba6367cc
https://svn.boost.org/svn/boost/trunk ........ r49240 | agurtovoy | 2008-10-10 04:21:07 -0500 (Fri, 10 Oct 2008) | 1 line $Source$ -> $Id$ ........ [SVN r49268]
59 lines
1.1 KiB
C++
59 lines
1.1 KiB
C++
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// Copyright Aleksey Gurtovoy 2002-2004
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Id$
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// $Date$
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// $Revision$
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#include <boost/mpl/inherit.hpp>
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#include <boost/mpl/inherit_linearly.hpp>
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#include <boost/mpl/list.hpp>
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#include <iostream>
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namespace mpl = boost::mpl;
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using namespace mpl::placeholders;
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template< typename T >
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struct tuple_field
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{
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typedef tuple_field type; // note the typedef
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T field_;
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};
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template< typename T >
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inline
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T& field(tuple_field<T>& t)
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{
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return t.field_;
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}
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typedef mpl::inherit_linearly<
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mpl::list<int,char const*,bool>
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, mpl::inherit< _1, tuple_field<_2> >
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>::type my_tuple;
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int main()
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{
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my_tuple t;
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field<int>(t) = -1;
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field<char const*>(t) = "text";
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field<bool>(t) = false;
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std::cout
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<< field<int>(t) << '\n'
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<< field<char const*>(t) << '\n'
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<< field<bool>(t) << '\n'
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;
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return 0;
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}
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