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// 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/accessors.hpp>
#include <boost/hana/all_of.hpp>
#include <boost/hana/assert.hpp>
#include <boost/hana/define_struct.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/find.hpp>
#include <boost/hana/optional.hpp>
#include <boost/hana/second.hpp>
#include <boost/hana/string.hpp>
#include <string>
namespace hana = boost::hana;
struct Person {
BOOST_HANA_DEFINE_STRUCT(Person,
(std::string, name),
(unsigned short, age)
);
};
int main() {
Person john{"John", 30};
BOOST_HANA_RUNTIME_CHECK(
hana::find(john, BOOST_HANA_STRING("name")) == hana::just("John")
);
BOOST_HANA_CONSTANT_CHECK(
hana::find(john, BOOST_HANA_STRING("foobar")) == hana::nothing
);
BOOST_HANA_RUNTIME_CHECK(
hana::all_of(hana::accessors<Person>(), [&](auto a) {
return hana::second(a)(john) == hana::second(a)(john);
})
);
// the above is equivalent to:
BOOST_HANA_RUNTIME_CHECK(hana::equal(john, john));
}
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