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38 lines
914 B
C++
38 lines
914 B
C++
/*
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@copyright Louis Dionne 2014
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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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*/
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#include <boost/hana/detail/assert.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <boost/hana/functional.hpp>
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#include <boost/hana/integral.hpp>
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#include <boost/hana/list/instance.hpp>
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#include <boost/hana/pair.hpp>
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using namespace boost::hana;
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int main() {
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//! [main]
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BOOST_HANA_CONSTEXPR_LAMBDA auto xs = list(int_<1>, int_<2>, int_<3>, int_<4>);
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BOOST_HANA_CONSTANT_ASSERT(
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span(xs, _ < int_<3>)
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==
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pair(list(int_<1>, int_<2>), list(int_<3>, int_<4>))
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);
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BOOST_HANA_CONSTANT_ASSERT(
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span(xs, _ < int_<0>)
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==
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pair(list(), xs)
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);
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BOOST_HANA_CONSTANT_ASSERT(
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span(xs, _ < int_<5>)
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==
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pair(xs, list())
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);
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//! [main]
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}
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