47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
// Copyright Louis Dionne 2013-2017
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#include <boost/hana/accessors.hpp>
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#include <boost/hana/all_of.hpp>
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#include <boost/hana/assert.hpp>
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#include <boost/hana/define_struct.hpp>
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#include <boost/hana/equal.hpp>
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#include <boost/hana/find.hpp>
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#include <boost/hana/optional.hpp>
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#include <boost/hana/second.hpp>
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#include <boost/hana/string.hpp>
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#include <string>
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namespace hana = boost::hana;
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struct Person {
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BOOST_HANA_DEFINE_STRUCT(Person,
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(std::string, name),
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(unsigned short, age)
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);
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};
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int main() {
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Person john{"John", 30};
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BOOST_HANA_RUNTIME_CHECK(
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hana::find(john, BOOST_HANA_STRING("name")) == hana::just("John")
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);
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BOOST_HANA_CONSTANT_CHECK(
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hana::find(john, BOOST_HANA_STRING("foobar")) == hana::nothing
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);
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BOOST_HANA_RUNTIME_CHECK(
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hana::all_of(hana::accessors<Person>(), [&](auto a) {
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return hana::second(a)(john) == hana::second(a)(john);
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})
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);
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// the above is equivalent to:
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BOOST_HANA_RUNTIME_CHECK(hana::equal(john, john));
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}
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