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https://github.com/boostorg/hana.git
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6ca6501278
- Rename elem to contains - Rename subset to is_subset, and make is_subset applicable in infix notation - Add the at_key method - operator[] is now bound to at_key instead of find
102 lines
2.3 KiB
C++
102 lines
2.3 KiB
C++
/*
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@copyright Louis Dionne 2015
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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/assert.hpp>
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#include <boost/hana/config.hpp>
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#include <boost/hana/integral_constant.hpp>
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#include <boost/hana/maybe.hpp>
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#include <boost/hana/set.hpp>
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#include <boost/hana/string.hpp>
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#include <boost/hana/type.hpp>
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using namespace boost::hana;
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int main() {
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//////////////////////////////////////////////////////////////////////////////
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// Models
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//////////////////////////////////////////////////////////////////////////////
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{
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//! [Comparable]
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BOOST_HANA_CONSTANT_CHECK(
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set(int_<0>, type<char>, int_<1>) == set(int_<1>, int_<0>, type<char>)
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);
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BOOST_HANA_CONSTEXPR_CHECK(set(1, '2', 3.3) == set('2', 1, 3.3));
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BOOST_HANA_CONSTANT_CHECK(set(1, '2', 3.3) != set('2', 1));
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//! [Comparable]
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}{
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//! [Searchable]
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constexpr auto xs = set(int_<0>, int_<1>, int_<2>);
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BOOST_HANA_CONSTANT_CHECK(find(xs, int_<0>) == just(int_<0>));
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BOOST_HANA_CONSTANT_CHECK(find(xs, int_<3>) == nothing);
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// operator[] is equivalent to at_key
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BOOST_HANA_CONSTANT_CHECK(xs[int_<2>] == int_<2>);
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// long_<0> == int_<0>, and therefore int_<0> is found
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BOOST_HANA_CONSTANT_CHECK(xs[long_<0>] == int_<0>);
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//! [Searchable]
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}{
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//! [Foldable]
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constexpr auto xs = set(int_<0>, int_<1>, int_<2>);
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static_assert(minimum(xs) == int_<0>, "");
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static_assert(maximum(xs) == int_<2>, "");
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static_assert(sum<>(xs) == int_<3>, "");
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//! [Foldable]
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}
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//////////////////////////////////////////////////////////////////////////////
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// Methods
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//////////////////////////////////////////////////////////////////////////////
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{
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//! [make<Set>]
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auto m = make<Set>(int_<1>, type<void>);
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//! [make<Set>]
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(void)m;
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}{
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//! [make_set]
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BOOST_HANA_CONSTANT_CHECK(
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make_set(int_<1>, type<void>) == make<Set>(int_<1>, type<void>)
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);
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//! [make_set]
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}{
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//! [from_Foldable]
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BOOST_HANA_CONSTANT_CHECK(
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to<Set>(make<Tuple>(int_<1>, int_<3>, type<int>, long_<1>))
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== make<Set>(int_<1>, int_<3>, type<int>)
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);
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//! [from_Foldable]
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}{
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//! [insert]
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constexpr auto xs = set(int_<0>, type<int>);
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BOOST_HANA_CONSTANT_CHECK(
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insert(xs, BOOST_HANA_STRING("abc")) ==
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set(int_<0>, type<int>, BOOST_HANA_STRING("abc"))
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);
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BOOST_HANA_CONSTANT_CHECK(
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insert(xs, int_<0>) == set(int_<0>, type<int>)
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);
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//! [insert]
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}
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}
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