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Diffstat (limited to 'src/boost/libs/hana/example/set/searchable.cpp')
-rw-r--r-- | src/boost/libs/hana/example/set/searchable.cpp | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/set/searchable.cpp b/src/boost/libs/hana/example/set/searchable.cpp new file mode 100644 index 000000000..81fa26933 --- /dev/null +++ b/src/boost/libs/hana/example/set/searchable.cpp @@ -0,0 +1,25 @@ +// 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/at_key.hpp> +#include <boost/hana/equal.hpp> +#include <boost/hana/find.hpp> +#include <boost/hana/integral_constant.hpp> +#include <boost/hana/optional.hpp> +#include <boost/hana/set.hpp> +namespace hana = boost::hana; + + +int main() { + constexpr auto xs = hana::make_set(hana::int_c<0>, hana::int_c<1>, hana::int_c<2>); + BOOST_HANA_CONSTANT_CHECK(hana::find(xs, hana::int_c<0>) == hana::just(hana::int_c<0>)); + BOOST_HANA_CONSTANT_CHECK(hana::find(xs, hana::int_c<3>) == hana::nothing); + + // operator[] is equivalent to at_key + BOOST_HANA_CONSTANT_CHECK(xs[hana::int_c<2>] == hana::int_c<2>); + + // long_c<0> == int_<0>, and therefore int_<0> is found + BOOST_HANA_CONSTANT_CHECK(xs[hana::long_c<0>] == hana::int_c<0>); +} |