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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/assert.hpp>
#include <boost/hana/bool.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/find_if.hpp>
#include <boost/hana/functional/always.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/optional.hpp>
#include <boost/hana/string.hpp>
namespace hana = boost::hana;
int main() {
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(BOOST_HANA_STRING(""), hana::always(hana::true_c)),
hana::nothing
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(BOOST_HANA_STRING("abcd"), hana::equal.to(hana::char_c<'a'>)),
hana::just(hana::char_c<'a'>)
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(BOOST_HANA_STRING("abcd"), hana::equal.to(hana::char_c<'c'>)),
hana::just(hana::char_c<'c'>)
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(BOOST_HANA_STRING("abcd"), hana::equal.to(hana::char_c<'d'>)),
hana::just(hana::char_c<'d'>)
));
}
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