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41 lines
1003 B
C++
41 lines
1003 B
C++
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#ifndef BOOST_MPL_O1_SIZE_HPP_INCLUDED
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#define BOOST_MPL_O1_SIZE_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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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/O1_size_fwd.hpp>
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#include <boost/mpl/sequence_tag.hpp>
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#include <boost/mpl/aux_/O1_size_impl.hpp>
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#include <boost/mpl/aux_/na_spec.hpp>
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#include <boost/mpl/aux_/lambda_support.hpp>
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namespace boost { namespace mpl {
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// returns sequence size if it's an O(1) operation; otherwise returns -1
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template<
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typename BOOST_MPL_AUX_NA_PARAM(Sequence)
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>
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struct O1_size
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: O1_size_impl< typename sequence_tag<Sequence>::type >
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::template apply< Sequence >
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{
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BOOST_MPL_AUX_LAMBDA_SUPPORT(1, O1_size, (Sequence))
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};
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BOOST_MPL_AUX_NA_SPEC(1, O1_size)
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}}
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#endif // BOOST_MPL_O1_SIZE_HPP_INCLUDED
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