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Diffstat (limited to 'src/boost/libs/hana/example/find.cpp')
-rw-r--r-- | src/boost/libs/hana/example/find.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/find.cpp b/src/boost/libs/hana/example/find.cpp new file mode 100644 index 000000000..cd75bc974 --- /dev/null +++ b/src/boost/libs/hana/example/find.cpp @@ -0,0 +1,31 @@ +// 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/equal.hpp> +#include <boost/hana/find.hpp> +#include <boost/hana/integral_constant.hpp> +#include <boost/hana/map.hpp> +#include <boost/hana/optional.hpp> +#include <boost/hana/pair.hpp> +#include <boost/hana/tuple.hpp> +#include <boost/hana/type.hpp> +namespace hana = boost::hana; + + +BOOST_HANA_CONSTANT_CHECK( + hana::find(hana::make_tuple(hana::int_c<1>, hana::type_c<int>, '3'), hana::type_c<int>) == hana::just(hana::type_c<int>) +); +BOOST_HANA_CONSTANT_CHECK( + hana::find(hana::make_tuple(hana::int_c<1>, hana::type_c<int>, '3'), hana::type_c<void>) == hana::nothing +); + +constexpr auto m = hana::make_map( + hana::make_pair(hana::int_c<2>, 2), + hana::make_pair(hana::type_c<float>, 3.3), + hana::make_pair(hana::type_c<char>, hana::type_c<int>) +); +static_assert(hana::find(m, hana::type_c<float>) == hana::just(3.3), ""); + +int main() { } |