[ceph.git] / ceph / src / boost / libs / parameter / test / literate / extracting-parameter-types1.cpp


#include <boost/parameter.hpp>
#include <boost/type_traits/remove_reference.hpp>
#include <cassert>

namespace parameter = boost::parameter;
BOOST_PARAMETER_NAME(index)

template <class ArgumentPack>
typename parameter::value_type<ArgumentPack, tag::index, int>::type
twice_index(ArgumentPack const& args)
{
    return 2 * args[_index|42];
}

int six = twice_index(_index = 3);
int main()
{
    assert(six == 6);
}
Commit	Line	Data
7c673cae FG	1
	2	#include <boost/parameter.hpp>
	3	#include <boost/type_traits/remove_reference.hpp>
	4	#include <cassert>
	5
	6	namespace parameter = boost::parameter;
	7	BOOST_PARAMETER_NAME(index)
	8
	9	template <class ArgumentPack>
	10	typename parameter::value_type<ArgumentPack, tag::index, int>::type
	11	twice_index(ArgumentPack const& args)
	12	{
	13	return 2 * args[_index\|42];
	14	}
	15
	16	int six = twice_index(_index = 3);
	17	int main()
	18	{
	19	assert(six == 6);
	20	}
	21