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lookup_problem.cpp

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// Copyright 2021 Peter Dimov

// Distributed under the Boost Software License, Version 1.0.

// https://www.boost.org/LICENSE_1_0.txt

#include <boost/lambda2.hpp>

#include <boost/core/lightweight_test.hpp>

namespace N

{

struct Irrelevant {};

void operator+( Irrelevant, Irrelevant );

int plus_one( int i )

{

using namespace boost::lambda2;

return (_1 + 1)( i );

}

}

int main()

{

BOOST_TEST_EQ( N::plus_one( 4 ), 5 );

return boost::report_errors();

}