hana/example/cppcon_2014/functor.cpp

34 lines
1.0 KiB
C++

// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/assert.hpp>
#include <boost/hana/functional/placeholder.hpp>
#include <boost/hana/integral_constant.hpp>
#include "matrix/comparable.hpp"
#include "matrix/functor.hpp"
namespace hana = boost::hana;
using namespace cppcon;
int main() {
// transform
{
BOOST_HANA_CONSTEXPR_LAMBDA auto m = matrix(
row(1, hana::int_c<2>, 3),
row(hana::int_c<4>, 5, 6),
row(7, 8, hana::int_c<9>)
);
BOOST_HANA_CONSTEXPR_CHECK(hana::equal(
hana::transform(m, hana::_ + hana::int_c<1>),
matrix(
row(2, hana::int_c<3>, 4),
row(hana::int_c<5>, 6, 7),
row(8, 9, hana::int_c<10>)
)
));
}
}