find_if.hpp

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#ifndef BOOST_MPL_FIND_IF_HPP_INCLUDED
#define BOOST_MPL_FIND_IF_HPP_INCLUDED
 
// Copyright Aleksey Gurtovoy 2000-2004
//
// Distributed under 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/mpl for documentation.
 
// $Id: find_if.hpp 13472 2017-08-22 07:53:44Z richean $
// $Date: 2017-08-22 09:53:44 +0200 (Di, 22 Aug 2017) $
// $Revision: 13472 $
 
#include <boost/mpl/aux_/find_if_pred.hpp>
#include <boost/mpl/arg.hpp>
#include <boost/mpl/iter_fold_if.hpp>
#include <boost/mpl/aux_/common_name_wknd.hpp>
#include <boost/mpl/aux_/na_spec.hpp>
#include <boost/mpl/aux_/lambda_support.hpp>
 
namespace boost { namespace mpl {
 
BOOST_MPL_AUX_COMMON_NAME_WKND(find_if)
 
template<
      typename BOOST_MPL_AUX_NA_PARAM(Sequence)
    , typename BOOST_MPL_AUX_NA_PARAM(Predicate)
    >
struct find_if
{
    typedef typename iter_fold_if<
          Sequence
        , void
        , mpl::arg<1> // ignore
        , protect< aux::find_if_pred<Predicate> >
        >::type result_;
 
    typedef typename second<result_>::type type;
 
    BOOST_MPL_AUX_LAMBDA_SUPPORT(2,find_if,(Sequence,Predicate))
};
 
BOOST_MPL_AUX_NA_SPEC(2,find_if)
 
}}
 
#endif // BOOST_MPL_FIND_IF_HPP_INCLUDED